Nothing Special   »   [go: up one dir, main page]

WO2019002499A1 - Edible composition - Google Patents

Edible composition Download PDF

Info

Publication number
WO2019002499A1
WO2019002499A1 PCT/EP2018/067476 EP2018067476W WO2019002499A1 WO 2019002499 A1 WO2019002499 A1 WO 2019002499A1 EP 2018067476 W EP2018067476 W EP 2018067476W WO 2019002499 A1 WO2019002499 A1 WO 2019002499A1
Authority
WO
WIPO (PCT)
Prior art keywords
fructose
edible composition
phloretin
eucalyptol
uptake
Prior art date
Application number
PCT/EP2018/067476
Other languages
French (fr)
Inventor
Mark John Berry
Mark Ian FOWLER
Alan David HEATH
Original Assignee
Unilever Plc
Unilever N.V.
Conopco, Inc., D/B/A Unilever
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever Plc, Unilever N.V., Conopco, Inc., D/B/A Unilever filed Critical Unilever Plc
Publication of WO2019002499A1 publication Critical patent/WO2019002499A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L33/00Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
    • A23L33/10Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L33/00Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
    • A23L33/10Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
    • A23L33/105Plant extracts, their artificial duplicates or their derivatives
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L33/00Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
    • A23L33/20Reducing nutritive value; Dietetic products with reduced nutritive value

Definitions

  • the present invention relates to an edible composition capable of reducing fructose uptake.
  • Fructose or fruit sugar
  • Fructose is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose. It is one of the three dietary monosaccharides, along with glucose and galactose, that are absorbed directly into the bloodstream during digestion. Pure, dry fructose is a very sweet, white, odorless, crystalline solid and is the most water-soluble of all the sugars. Fructose is found in honey, tree and vine fruits, flowers, berries, and most root vegetables. Commercially, fructose is frequently derived from sugar cane, sugar beets, and maize. Crystalline fructose is the monosaccharide, dried, ground, and of high purity.
  • High- fructose corn syrup is a mixture of glucose and fructose as monosaccharides.
  • Sucrose is a compound with one molecule of glucose covalently linked to one molecule of fructose. All forms of fructose, including fruits and juices, are commonly added to foods and drinks for palatability and taste enhancement, and for browning of some foods, such as baked goods.
  • fructose is a cause of insulin resistance, obesity, elevated LDL cholesterol and triglycerides, leading to metabolic syndrome, type 2 diabetes and cardiovascular disease.
  • the European Food Safety Authority has stated that fructose noted that "high intakes of fructose may lead to metabolic complications such as dyslipidaemia, insulin resistance and increased visceral adiposity".
  • Eating fructose causes a post-prandial spike in fructose levels and while the body is able to cope with a certain level of fructose, above this level deleterious effects such as those listed may occur. It is therefore desirable to "flatten the fructose spike" in order to bring fructose down to the level that the body can cope with such that the deleterious effects are prevented. In essence, what is required is that the uptake of fructose is slowed. There is therefore a need for compositions that provide such an effect.
  • US 20140128585 discloses a fructose absorption inhibitor comprising a hydrolyzable tannin as an active component.
  • WO12008474 discloses a fructose absorption inhibitor that has a monoterpene as the active ingredient, and a preventative or therapeutic agent that is for symptoms or maladies caused by overconsumption of fructose.
  • the present invention provides an edible composition comprising from 100 to 500mg of the glucose inhibitor Phloretin and 100-500mg of Eucalyptol .
  • the edible composition comprises from 125 to 450mg of Phloretin, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
  • the edible composition comprises from 125 to 450mg of Eucalyptol , more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
  • the molar ratio of Phloretin to Eucalyptol is in the range 4:1 to 1 :4, preferably 3:1 to 1 :3, most preferably 2:1 to 1 :2, even more preferably 1 .5:1 to 1 :1 .5, most preferably 1.25:1 to 1 :1.25.
  • the edible composition comprises up to 75 wt% fructose, more preferably up to 50 wt% fructose, even more preferably up to 40 wt% fructose, yet more preferably up to 30 wt% fructose, more preferably still up to 20 wt% fructose.
  • the edible composition comprises at least 1 wt% fructose, more preferably at least 2 wt% fructose, even more preferably at least 5 wt% fructose, yet more preferably at least 10 wt% fructose, more preferably still at least 15 wt% fructose.
  • the edible composition is a frozen confection such as an ice cream, or a beverage.
  • the edible composition may be in the form of a packaged beverage comprising no more than 99.95 wt% water.
  • the edible composition may also be in the form of a dry powder contained in a sachet, the dry powder suitable for addition to a meal.
  • the present invention provides an edible composition comprising from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol or Vanillin or a
  • the edible composition for use in the second aspect comprises from 125 to 450mg of Phloretin, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
  • the edible composition comprises from 125 to 450mg of Eucalyptol or Vanillin or a combination thereof, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
  • the molar ratio of Phloretin to Eucalyptol or Vanillin or a combination thereof is in the range 4:1 to 1 :4, preferably 3:1 to 1 :3, most preferably 2:1 to 1 :2, even more preferably 1.5: 1 to 1 :1.5, most preferably 1.25:1 to 1 :1.25.
  • Fructose absorption occurs in the small intestine via the GLUT-5 (fructose only) transporter, the GLUT2 transporter, for which it competes with glucose and galactose, and potentially a number of GLUT transporters of similar structure.
  • GLUT-5 fructose only
  • GLUT2 transporter for which it competes with glucose and galactose, and potentially a number of GLUT transporters of similar structure.
  • Over-consumption of fructose, inhibition of GLUT2, GLUT5 and other transporters of similar structure by phytochemicals, such as flavonoids, or other issues may result in delivery of unabsorbed fructose into the large intestine, which will cause more water to be drawn into the large intestine through the process of osmosis causing diarrhoea.
  • the excessive fructose becomes a source of nutrients for the gut flora resulting in a higher production of short chain fatty acids, hydrogen, carbon dioxide and other gases due to fermentation.
  • This increase of gas causes gastrointestinal side effects that mimic irritable bowel syndrome. For this reason, it is desirable to slow the uptake of fructose rather than prevention.
  • fructose consumption has also been hypothesized to be a cause of insulin resistance, obesity, elevated LDL cholesterol and triglycerides, leading to metabolic syndrome.
  • fructose consumption was correlated with obesity and encouraged visceral adipose tissue deposition in humans.
  • fructose and sucrose produced significantly higher fasting plasma triglyceride values than did the glucose diet in men" and "...if plasma triacylglycerols are a risk factor for cardiovascular disease, then diets high in fructose may be undesirable".
  • Excessive fructose consumption may also contribute to the development of non-alcoholic fatty liver disease.
  • a 2008 study found a risk of incident gout associated with high consumption of fructose or fructose-rich foods. Compared with consumption of high glucose beverages, drinking high-fructose beverages with meals results in lower circulating insulin and leptin levels, and higher ghrelin levels after the meal. Since leptin and insulin decrease appetite and ghrelin increases appetite, some researchers suspect that eating large amounts of fructose increases the likelihood of weight gain.
  • the present invention has surprisingly found that an edible composition with specific combinations of fructose inhibitors Eucalyptol or Vanillin with glucose inhibitor Phloretin is capable of retarding the uptake of fructose.
  • Phloretin is a dihydrochalcone having the following structure:
  • Eucalyptol is a natural organic compound known by a variety of synonyms: 1 ,8-cineol, 1 ,8-cineole, cajeputol, 1 ,8-epoxy-p-menthane, 1 ,8-oxido-p-menthane, eucalyptol, eucalyptole, 1 ,3,3-trimethyl-2-oxabicyclo[2,2,2]octane, cineol, and cineole with the following structure:
  • Vanillin is a phenolic aldehyde with the following structure:
  • Phloretin or Eucalyptol or Vanillin may have an effect on glucose or fructose uptake
  • the combination of Phloretin with Eucalyptol or Phloretin with Vanillin actually provides a synergistic improvement in fructose uptake inhibition. That is to say that the fructose uptake inhibition achieved by Phloretin with Eucalyptol in combination is greater than the inhibition that would be expected merely from the additive effect of these compounds. The same is true for Phloretin with Vanillin.
  • the edible composition of the invention therefore comprises from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol or Vanillin or a combination thereof.
  • the edible composition comprises from 125 to 450mg of Phloretin, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
  • the edible composition comprises from 125 to 450mg of Eucalyptol or Vanillin or a combination thereof, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
  • the molar ratio of Phloretin to Eucalyptol or Vanillin or a combination thereof is in the range 4:1 to 1 :4, preferably 3:1 to 1 :3, most preferably 2:1 to 1 :2, even more preferably 1 .5:1 to 1 :1 .5, most preferably 1 .25:1 to 1 :1.25.
  • the composition itself may comprise high fructose for example up to 75 wt% fructose, more preferably up to 50 wt% fructose, even more preferably up to 40 wt% fructose, yet more preferably up to 30 wt% fructose, more preferably still up to 20 wt% fructose.
  • the edible composition comprises at least 1 wt% fructose, more preferably at least 2 wt% fructose, even more preferably at least 5 wt% fructose, yet more preferably at least 10 wt% fructose, more preferably still at least 15 wt% fructose.
  • Any form of edible composition may be suitable for the present invention.
  • the edible composition of the invention could be consumed as a supplement to a high fructose meal to retard fructose uptake.
  • the edible composition of the invention could be comprised as part of another food product.
  • the edible composition is a frozen confection such as an ice cream, or a beverage. It will be appreciated that the edible composition is intended to be consumed completely in a single sitting, i.e. as a single meal or similar in order to deliver the required levels of Phloretin and Eucalyptol and/or Vanillin.
  • the edible composition may also be in the form of a packaged beverage comprising no more than 99.95 % w/w water.
  • the edible composition can be in the form of a dry powder contained in a sachet, the dry powder suitable for addition to a meal.
  • the invention also provides an edible composition comprising from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol or Vanillin or a combination thereof for use in reducing the uptake of fructose.
  • the edible composition for usejn reducing the uptake of fructose can comprise from 125 to 450mg of Phloretin, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
  • the edible composition for use in reducing the uptake of fructose can comprise from 125 to 450mg of Eucalyptol or Vanillin or a combination thereof, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
  • the molar ratio of Phloretin to Eucalyptol or Vanillin or a combination thereof in the edible composition for use in reducing the uptake of fructose may bejn the range 4:1 to 1 :4, preferably 3:1 to 1 :3, most preferably 2:1 to 1 :2, even more preferably 1.5:1 to 1 :1 .5, most preferably 1.25:1 to 1 :1 .25.
  • the composition is used to reduce post-prandial fructose uptake.
  • the use is for reduction of post-prandial fructose uptake in a non-diabetic person.
  • the invention may also provide a method of reducing post-prandial fructose uptake in a non-diabetic person comprising the steps of:
  • step (a) is simultaneous with, precedes by 0 to 90, preferably 0 to 60 minutes, or follows by 0 to 30 minutes step (b).
  • the invention may provide a method for treating a person in need thereof for type 2 diabetes comprising the steps of:
  • step (b) oral administration of a composition comprising fructose to the person in need thereof; wherein step (a) is simultaneous with, precedes by 0 to 90, preferably 0 to 60 minutes, or follows by 0 to 30 minutes step (b).
  • the invention could provide a composition according to the first aspect of the invention for use in the treatment of dyslipidaemia, insulin resistance, increased visceral adiposity, or type 2 diabetes.
  • Caco-2 cells were seeded into cell culture inserts (2.5x105 cells/ well for 24 well plates and 1 x105 for
  • DMEM+Glutamax-1 (contains 4.5g/L D-Glucose
  • Lucifer yellow transport as a measure of monolayer integrity and insert membrane integrity was measured by addition Lucifer yellow [Sigma L0144].
  • the cell inserts were transferred to a new plate, the supernatant gently aspirated from the cells and replaced with 100uM Lucifer Yellow solution, PBS(+) added to the collection well and incubated at 37oC 5% C02 for 1 hr. Permeability of the membranes to Lucifer Yellow was checked by measuring the fluorescence of the samples at 485 excitation & 530 emission.
  • the fructose and glucose assay was based on Campbell et al. (1999) "Cost-effective colorimetric microtitre plate enzymatic assays for sucrose, glucose and fructose in sugarcane tissue extracts", J Sci Food Agric 79: 232-236.
  • Glucose and fructose were first converted to glucose-6-phosphate and fructose-6- phosphate respectively in the presence of 1.25mg/ml ATP (Sigma, A26209) and 1 .6U/m Ihexokinase (Sigma, H6380).
  • Glucose-6-phosphate was converted to NADH in the presence of 0.54mg/ml NAD+ (Sigma, N6522) and 0.72U/ml glucose-6-phosphate dehydrogenase (Sigma, G8529) in the same reaction mix.
  • phytonutrients 14 phytonutrients were tested for their ability to inhibit fructose uptake using the model described above. These phytonutrients were:
  • gallic acid ellagic acid; pyrogalol; astilbin; quercetin-3-glucoside; cinnamaldehyde; eucalyptol; vanillin; lectin glycine; aribinogalactan; phloretin; luteolin; phloridzin; luteolin-7-glucoside.
  • DMSO DMSO was deemed to be a notional 100% and so if a test compound, or pair of test compounds, caused a fructose uptake of greater than 100% this was an increase in fructose uptake, and if a test compound, or pair of test compounds caused a fructose uptake of less than 100% this was a decrease in fructose uptake.
  • Table 2 The results are shown in Table 2 in which:
  • Fructose uptake is shown as a percent fructose uptake vs the DMSO control
  • the Glucose Inhibitor is shown by "(G)"
  • the Fructose Inhibitor is shown by "(F)"

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Mycology (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Botany (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

An edible composition comprising from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol is provided. The invention also provides an edible composition comprising from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol or Vanillin or a combination thereof for use in reducing the uptake of fructose.

Description

EDIBLE COMPOSITION
Field of the invention
The present invention relates to an edible composition capable of reducing fructose uptake.
Background of the invention
Fructose, or fruit sugar, is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose. It is one of the three dietary monosaccharides, along with glucose and galactose, that are absorbed directly into the bloodstream during digestion. Pure, dry fructose is a very sweet, white, odorless, crystalline solid and is the most water-soluble of all the sugars. Fructose is found in honey, tree and vine fruits, flowers, berries, and most root vegetables. Commercially, fructose is frequently derived from sugar cane, sugar beets, and maize. Crystalline fructose is the monosaccharide, dried, ground, and of high purity. High- fructose corn syrup is a mixture of glucose and fructose as monosaccharides. Sucrose is a compound with one molecule of glucose covalently linked to one molecule of fructose. All forms of fructose, including fruits and juices, are commonly added to foods and drinks for palatability and taste enhancement, and for browning of some foods, such as baked goods.
Research indicates that excessive fructose consumption is a cause of insulin resistance, obesity, elevated LDL cholesterol and triglycerides, leading to metabolic syndrome, type 2 diabetes and cardiovascular disease. The European Food Safety Authority has stated that fructose noted that "high intakes of fructose may lead to metabolic complications such as dyslipidaemia, insulin resistance and increased visceral adiposity".
Eating fructose causes a post-prandial spike in fructose levels and while the body is able to cope with a certain level of fructose, above this level deleterious effects such as those listed may occur. It is therefore desirable to "flatten the fructose spike" in order to bring fructose down to the level that the body can cope with such that the deleterious effects are prevented. In essence, what is required is that the uptake of fructose is slowed. There is therefore a need for compositions that provide such an effect.
US 20140128585 discloses a fructose absorption inhibitor comprising a hydrolyzable tannin as an active component. WO12008474 discloses a fructose absorption inhibitor that has a monoterpene as the active ingredient, and a preventative or therapeutic agent that is for symptoms or maladies caused by overconsumption of fructose.
We have now surprisingly found that if certain fructose uptake inhibitors are provided in combination with a certain glucose uptake inhibitor then the combination delivers synergistically enhanced reduction of fructose uptake. Summary of the invention
Accordingly in a first aspect the present invention provides an edible composition comprising from 100 to 500mg of the glucose inhibitor Phloretin and 100-500mg of Eucalyptol . Preferably the edible composition comprises from 125 to 450mg of Phloretin, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
Preferably the edible composition comprises from 125 to 450mg of Eucalyptol , more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
Preferably the molar ratio of Phloretin to Eucalyptol is in the range 4:1 to 1 :4, preferably 3:1 to 1 :3, most preferably 2:1 to 1 :2, even more preferably 1 .5:1 to 1 :1 .5, most preferably 1.25:1 to 1 :1.25. Preferably the edible composition comprises up to 75 wt% fructose, more preferably up to 50 wt% fructose, even more preferably up to 40 wt% fructose, yet more preferably up to 30 wt% fructose, more preferably still up to 20 wt% fructose. Preferably the edible composition comprises at least 1 wt% fructose, more preferably at least 2 wt% fructose, even more preferably at least 5 wt% fructose, yet more preferably at least 10 wt% fructose, more preferably still at least 15 wt% fructose.
Preferably the edible composition is a frozen confection such as an ice cream, or a beverage.
The edible composition may be in the form of a packaged beverage comprising no more than 99.95 wt% water. The edible composition may also be in the form of a dry powder contained in a sachet, the dry powder suitable for addition to a meal.
In a second aspect, the present invention provides an edible composition comprising from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol or Vanillin or a
combination thereof for use in reducing the uptake of fructose. Preferably the edible composition for use in the second aspect comprises from 125 to 450mg of Phloretin, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
Preferably the edible composition comprises from 125 to 450mg of Eucalyptol or Vanillin or a combination thereof, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
Preferably the molar ratio of Phloretin to Eucalyptol or Vanillin or a combination thereof is in the range 4:1 to 1 :4, preferably 3:1 to 1 :3, most preferably 2:1 to 1 :2, even more preferably 1.5: 1 to 1 :1.5, most preferably 1.25:1 to 1 :1.25.
Detailed description of the invention Fructose absorption occurs in the small intestine via the GLUT-5 (fructose only) transporter, the GLUT2 transporter, for which it competes with glucose and galactose, and potentially a number of GLUT transporters of similar structure. Over-consumption of fructose, inhibition of GLUT2, GLUT5 and other transporters of similar structure by phytochemicals, such as flavonoids, or other issues, may result in delivery of unabsorbed fructose into the large intestine, which will cause more water to be drawn into the large intestine through the process of osmosis causing diarrhoea. In addition, the excessive fructose becomes a source of nutrients for the gut flora resulting in a higher production of short chain fatty acids, hydrogen, carbon dioxide and other gases due to fermentation. This increase of gas causes gastrointestinal side effects that mimic irritable bowel syndrome. For this reason, it is desirable to slow the uptake of fructose rather than prevention.
Excess fructose consumption has also been hypothesized to be a cause of insulin resistance, obesity, elevated LDL cholesterol and triglycerides, leading to metabolic syndrome. In preliminary research, fructose consumption was correlated with obesity and encouraged visceral adipose tissue deposition in humans.
Studies indicate that there may be an increased risk of cardiovascular disease from a high intake of fructose. Studies have also associated high fructose consumption with increased incidence of hypertension, both acutely and in the long term in subjects without a history of hypertension.
Yet another study in humans concluded that fructose and sucrose "produced significantly higher fasting plasma triglyceride values than did the glucose diet in men" and "...if plasma triacylglycerols are a risk factor for cardiovascular disease, then diets high in fructose may be undesirable". A study later confirmed this by showing that consuming beverages with high levels of high-fructose corn syrup caused heightened levels of LDL cholesterol, non-HDL cholesterol, apolipoprotein B, all of which are lipid/lipoproteins risk factors for cardiovascular disease.
Excessive fructose consumption may also contribute to the development of non-alcoholic fatty liver disease. A 2008 study found a risk of incident gout associated with high consumption of fructose or fructose-rich foods. Compared with consumption of high glucose beverages, drinking high-fructose beverages with meals results in lower circulating insulin and leptin levels, and higher ghrelin levels after the meal. Since leptin and insulin decrease appetite and ghrelin increases appetite, some researchers suspect that eating large amounts of fructose increases the likelihood of weight gain.
For all these reasons, it is evident that it is desirable that the uptake of fructose from the diet be reduced or at least slowed down such that the body can process the fructose with a minimisation of the deleterious effects associated with elevated consumption.
The present invention has surprisingly found that an edible composition with specific combinations of fructose inhibitors Eucalyptol or Vanillin with glucose inhibitor Phloretin is capable of retarding the uptake of fructose. Phloretin is a dihydrochalcone having the following structure:
Figure imgf000006_0001
Eucalyptol is a natural organic compound known by a variety of synonyms: 1 ,8-cineol, 1 ,8-cineole, cajeputol, 1 ,8-epoxy-p-menthane, 1 ,8-oxido-p-menthane, eucalyptol, eucalyptole, 1 ,3,3-trimethyl-2-oxabicyclo[2,2,2]octane, cineol, and cineole with the following structure:
Figure imgf000006_0002
Vanillin is a phenolic aldehyde with the following structure:
Figure imgf000007_0001
Although it may have been observed that one of Phloretin or Eucalyptol or Vanillin may have an effect on glucose or fructose uptake, the combination of Phloretin with Eucalyptol or Phloretin with Vanillin actually provides a synergistic improvement in fructose uptake inhibition. That is to say that the fructose uptake inhibition achieved by Phloretin with Eucalyptol in combination is greater than the inhibition that would be expected merely from the additive effect of these compounds. The same is true for Phloretin with Vanillin.
As will be seen below, the synergistic effects have been demonstrated in vivo and through consideration of absorption, distribution, and metabolism of Phloretin, Eucalyptol, and Vanillin the edible composition of the invention therefore comprises from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol or Vanillin or a combination thereof. Preferably the edible composition comprises from 125 to 450mg of Phloretin, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
Preferably the edible composition comprises from 125 to 450mg of Eucalyptol or Vanillin or a combination thereof, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg. Preferably the molar ratio of Phloretin to Eucalyptol or Vanillin or a combination thereof is in the range 4:1 to 1 :4, preferably 3:1 to 1 :3, most preferably 2:1 to 1 :2, even more preferably 1 .5:1 to 1 :1 .5, most preferably 1 .25:1 to 1 :1.25.
Since the edible composition addresses issues associated with the uptake of fructose the composition itself may comprise high fructose for example up to 75 wt% fructose, more preferably up to 50 wt% fructose, even more preferably up to 40 wt% fructose, yet more preferably up to 30 wt% fructose, more preferably still up to 20 wt% fructose.
Preferably the edible composition comprises at least 1 wt% fructose, more preferably at least 2 wt% fructose, even more preferably at least 5 wt% fructose, yet more preferably at least 10 wt% fructose, more preferably still at least 15 wt% fructose. Any form of edible composition may be suitable for the present invention. The edible composition of the invention could be consumed as a supplement to a high fructose meal to retard fructose uptake. Alternatively, the edible composition of the invention could be comprised as part of another food product. Preferably the edible composition is a frozen confection such as an ice cream, or a beverage. It will be appreciated that the edible composition is intended to be consumed completely in a single sitting, i.e. as a single meal or similar in order to deliver the required levels of Phloretin and Eucalyptol and/or Vanillin.
The edible composition may also be in the form of a packaged beverage comprising no more than 99.95 % w/w water. The edible composition can be in the form of a dry powder contained in a sachet, the dry powder suitable for addition to a meal.
The invention also provides an edible composition comprising from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol or Vanillin or a combination thereof for use in reducing the uptake of fructose. The edible composition for usejn reducing the uptake of fructose can comprise from 125 to 450mg of Phloretin, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg. The edible composition for use in reducing the uptake of fructose can comprise from 125 to 450mg of Eucalyptol or Vanillin or a combination thereof, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg. The molar ratio of Phloretin to Eucalyptol or Vanillin or a combination thereof in the edible composition for use in reducing the uptake of fructose may bejn the range 4:1 to 1 :4, preferably 3:1 to 1 :3, most preferably 2:1 to 1 :2, even more preferably 1.5:1 to 1 :1 .5, most preferably 1.25:1 to 1 :1 .25. Preferably, the composition is used to reduce post-prandial fructose uptake. Preferably the use is for reduction of post-prandial fructose uptake in a non-diabetic person.
The invention may also provide a method of reducing post-prandial fructose uptake in a non-diabetic person comprising the steps of:
(a) oral administration of the composition of the first aspect of the invention to the non-diabetic person; and
(b) oral administration of a composition comprising fructose to the non-diabetic person;
wherein step (a) is simultaneous with, precedes by 0 to 90, preferably 0 to 60 minutes, or follows by 0 to 30 minutes step (b).
Similarly, the invention may provide a method for treating a person in need thereof for type 2 diabetes comprising the steps of:
(a) oral administration of the composition of the first aspect of the invention to the person in need thereof; and
(b) oral administration of a composition comprising fructose to the person in need thereof; wherein step (a) is simultaneous with, precedes by 0 to 90, preferably 0 to 60 minutes, or follows by 0 to 30 minutes step (b).
In a final aspect the invention could provide a composition according to the first aspect of the invention for use in the treatment of dyslipidaemia, insulin resistance, increased visceral adiposity, or type 2 diabetes.
Examples Fructose uptake model
To identify potential natural plant phytochemicals which inhibit the uptake of fructose, a model was used based on total cumulative fructose transport across differentiated Caco- 2 monolayers seeded onto a trans-well permeable inserts. The model was modified from the paper 'New and better protocols for a short-term Caco-2 cell culture system' by Yamashita et. al. (2002) to optimise for GLUT5, the presumed major fructose gut transporter.
Caco-2 cells were seeded into cell culture inserts (2.5x105 cells/ well for 24 well plates and 1 x105 for
96 well plates) coated with collagen II matrix in growth medium:
DMEM+Glutamax-1 (contains 4.5g/L D-Glucose
+ 25mM Hepes) [Invitrogen #32430027]
+ 10% (100x) Non Essential Amino Acids[lnvitrogen #1 1 14035]
+ 10% 100mM Sodium pyruvate solution[Sigma S8636]
- + 10% Fetal Bovine Serum[Sigma F7524]
30ml of Growth medium was added to the feeder plate below the inserts. The cells were left to attach over 24hrs at 37oC 5% C02. Following a gentle wash (both inserts and feeder plate) in PBS, the cells were incubated in Differentiation Medium:
- BD Entero-STIM™ Enterocyte Differentiation Medium, [BD Biosciences #05495] +(1000x) MITO+™ Serum Extender solution, [BD Biosciences #356007] for a further 48hrs, followed by 72hrs in growth medium. Assay
Cell monolayers were washed gently in PBS(+) and the inserts transferred to a new standard tissue culture plate. The cells were incubated with fresh PBS(+) for 30-60mins at 37°C 5% C02. Cell inserts were then transferred to a new plate, and potential actives or treatments were added with 25mM fructose and 25mM glucose in PBS(+) to the cell/inserts and PBS was added to the collection well for 120-150min. PBS(+) from the collection well was then analysed for glucose and fructose content.
Lucifer yellow transport as a measure of monolayer integrity and insert membrane integrity was measured by addition Lucifer yellow [Sigma L0144]. The cell inserts were transferred to a new plate, the supernatant gently aspirated from the cells and replaced with 100uM Lucifer Yellow solution, PBS(+) added to the collection well and incubated at 37oC 5% C02 for 1 hr. Permeability of the membranes to Lucifer Yellow was checked by measuring the fluorescence of the samples at 485 excitation & 530 emission.
Fructose and glucose uptake assay
The fructose and glucose assay was based on Campbell et al. (1999) "Cost-effective colorimetric microtitre plate enzymatic assays for sucrose, glucose and fructose in sugarcane tissue extracts", J Sci Food Agric 79: 232-236.
Glucose and fructose were first converted to glucose-6-phosphate and fructose-6- phosphate respectively in the presence of 1.25mg/ml ATP (Sigma, A26209) and 1 .6U/m Ihexokinase (Sigma, H6380).
Glucose-6-phosphate was converted to NADH in the presence of 0.54mg/ml NAD+ (Sigma, N6522) and 0.72U/ml glucose-6-phosphate dehydrogenase (Sigma, G8529) in the same reaction mix.
After 15 min the concentration of NADH is measured at 340nm to give a measure of glucose when compared to a glucose standard curve. Fructose-6-phosphate was then converted to NADH by the addition of 5.4U/ml phosphoglucose isomerase (Sigma, P5381 ). After 15 min the concentration of NADH is measured at 340nm to give a measure of glucose + fructose. Fructose concentration is determined by subtracting the glucose concentration and comparing to a fructose compared to a standard curve. Test Compounds
Initially, 14 phytonutrients were tested for their ability to inhibit fructose uptake using the model described above. These phytonutrients were:
gallic acid; ellagic acid; pyrogalol; astilbin; quercetin-3-glucoside; cinnamaldehyde; eucalyptol; vanillin; lectin glycine; aribinogalactan; phloretin; luteolin; phloridzin; luteolin-7-glucoside.
Of these 14 phytonutrients, 6 were found to have some inhibitory activity on fructose uptake at 150-300uM. These 6 fructose uptake inhibitors were then tested for synergistic activity with four known phytonutrient glucose transporter GLUT2 inhibitors. The test compounds are therefore given in Table 1.
Figure imgf000012_0001
Table 1 - Test compounds
Synergistic activity was tested for in a cross-wise design such that each glucose uptake inhibitor was tested with each fructose uptake inhibitor with 2-3 repeats over several experiments. Each compound was solubilised in DMSO at 150mM and used at a working dilution of 150uM. DMSO at 0.1 % was also tested as a vehicle control and used as the threshold value of fructose uptake - i.e. DMSO was deemed to be a notional 100% and so if a test compound, or pair of test compounds, caused a fructose uptake of greater than 100% this was an increase in fructose uptake, and if a test compound, or pair of test compounds caused a fructose uptake of less than 100% this was a decrease in fructose uptake. The results are shown in Table 2 in which:
Fructose uptake is shown as a percent fructose uptake vs the DMSO control The Glucose Inhibitor is shown by "(G)"
The Fructose Inhibitor is shown by "(F)"
Synergistic combinations are shown in bold and denoted by "(S)" in the "Fructose uptake (%)" column.
o Combinations are defined as synergistic when the fructose uptake inhibition achieved by (G) in pairwise combination with (F) is greater than the inhibition that would be expected merely from the additive inhibitory effect of (G) + (F).
Compounds tested Concentrations Fructose Standard of compound uptake error
tested (%)
Phloretin (G) 150uM 1 12.1 29.6
Vanillin (F) 150uM 84.9 16.7
Phloretin + Vanillin 150uM + 150uM 46.4 (S) 1 .95
Hesperetin (G) 150uM 104.6 27.8
Vanillin (F) 150uM 84.9 16.7
Hesperetin + Vanillin 150uM + 150uM 45.3 (S) 18.5
Hesperetin (G) 150uM 104.6 27.8
Cinnamaldehyde (F) 150uM 130.6 64.8
Hesperetin + Cinnamaldehyde 150uM + 150uM 89.3 64.8
Luteolin (G) 150uM 108.6 37.9
Cinnamaldehyde (F) 150uM 130.6 64.8
Luteolin + Cinnamaldeyde 150uM + 150uM 128.8 53.8
Resveratol (G) 150uM 99.1 58.7
Cinnmaldehyde 150uM 130.6 64.8
Resveratol + Cinnamaldehye 150uM + 150uM 85.6 42.1
Luteolin (G) 150uM 108.6 37.9
Eucalyptol (F) 150uM 1 17.2 52.3
Luteolin + Eucalyptol 150uM + 150uM 43.4 (S) 24.2
Resveratol (G) 150uM 99.1 58.7
Eucalyptol (F) 150uM 1 17.2 52.3
Resveratol + Eucalyptol 150uM + 150uM 131.1 77.4 Phloretin (G) 150uM 121.9 39.2
Cinnamaldehyde (F) 150uM 127.9 58.7
Phloretin + Cinnamaldehyde 150uM + 150uM 140.4 52.4
Phloretin (G) 150uM 121.9 39.2
Eucalyptol (F) 150uM 1 15.9 50.1
Phloretin + Eucalyptol 150uM + 150uM 34.4 (S) 1 1.7
Hesperetin (G) 150uM 95.4 37.0
Eucalyptol (F) 150uM 1 15.9 50.1
Hesperatin + Eucalyptol 150uM + 150uM 37.2 (S) 25.9
Luteolin (G) 150uM 104.3 35.1
Vanillin (F) 150uM 106.9 46.2
Luteolin + Vannilin 150uM + 150uM 1 1 1.1 6.8
Resveratol (G) 150uM 97.8 55.9
Vanillin (F) 150uM 106.9 46.2
Resveratol + Vanillin 150uM + 150uM 96.9 31.4
Phloretin (G) 150uM 81.6 29.4
Lectin glycine (F) 150uM 82.8 9.2
Phloretin + Lectin glycine 150uM + 150uM 100.6 32.7
Phloretin (G) 150uM 81.6 29.4
Quercetin-3-glucoside (F) 150uM 83.9 33.0
Phloretin + Quercetin-3-glucoside 150uM + 150uM 100.6 32.7
Phloretin (G) 150uM 81.6 29.4
Catechin (F) 150uM 80.8 14.4
Phloretin + Catechin 150uM + 150uM 124.5 1 12.9
Luteolin (G) 150uM 99.6 33.8
Lectin glycine (F) 150uM 82.8 9.2
Luteolin + Lectin glycine 150uM + 150uM 52.8 (S) 12.4
Luteolin (G) 150uM 99.6 33.8
Catechin (F) 150uM 80.8 14.3
Luteolin + Catechin 150uM + 150uM 1 12.5 22.5
Hesperetin (G) 150uM 120.1 54.9
Lectin glycine (F) 150uM 82.8 9.2
Hesperetin + Lectin glycine 150uM + 150uM 84.4 29.9
Hesperetin (G) 150uM 120.1 54.9
Quercetin-3-glucoside (F) 150uM 83.9 33.0 Hesperetin + Quercetin-3- 150uM + 150uM 1 16.8 41.3 glucoside
Hesperetin (G) 150uM 120.1 54.9
Catechin (F) 150uM 80.8 14.3
Hesperetin + Catechin 150uM + 150uM 103.7 44.0
Luteolin (G) 150uM 70.5 7.7
Quercetin-3-glucoside (F) 150uM 60.0 26.8
Luteolin + Quercetin-3-glucoside 150uM + 150uM 26.1 5.1
Resveratol (G) 150uM 95.3
Quercetin-3-glucoside (F) 150uM 80.4
Resveratol + Quercetin-3- 150uM + 150uM 78.8
glucoside
Resveratol (G) 150uM 95.3
Lectin glycine (F) 150uM 88.1
Resveratol + Lectin glycine 150uM + 150uM 85.7
Resveratol (G) 150uM 95.3
Catechin (F) 150uM 83.5
Resveratol + Catechin 150uM + 150uM 81.5
Table 2 - Fructose Uptake Inhibition Results
As can be seen from the results in Table 2, the combination of Phloretin with both Eucalyptol and Vanillin results in synergistic inhibition of fructose uptake. It can also be seen that these pairwise combinations must be specifically selected from the 24 potential pairwise combinations of the test compounds because the results also show that 18 of the combinations did not result in a synergistic inhibition and, in fact, 10 of the combinations caused fructose uptake was even greater than the DMSO control.

Claims

Claims
1. An edible composition comprising from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol.
2. An edible composition according to claim 1 comprising from 125 to 450mg of Phloretin.
3. An edible composition according to claim 1 or claim 2 comprising from 125 to 450mg of Eucalyptol.
4. An edible composition according to any of claims 1 to 3 wherein the molar ratio of Phloretin to Eucalyptol is in the range of from 4:1 to 1 :4.
5. An edible composition according to any of claims 1 to 4 wherein the edible composition comprises up to 75 wt% fructose.
6. An edible composition according to any of claims 1 to 5 wherein the edible composition comprises at least 1 wt% fructose.
7. An edible composition according to any of claims 1 to 6 wherein the edible composition is a frozen confection such as an ice cream, or a beverage.
8. An edible composition according to any of claims 1 to 7 wherein the edible composition may be in the form of a packaged beverage comprising no more than 99.95 wt% water.
9. An edible composition comprising from 100 to 500mg of Phloretin and 100-500mg of Eucalyptol or Vanillin or a combination thereof for use in reducing the uptake of fructose.
10. An edible composition according to claim 9 wherein the edible composition comprises from 125 to 450mg of Phloretin, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
1 1 . An edible composition according to claim 9 or claim 10 wherein the edible composition comprises from 125 to 450mg of Eucalyptol or Vanillin or a combination thereof, more preferably 150 to 400mg, even more preferably 175 to 350mg, yet more preferably 200 to 300mg, more preferably still 225 to 250mg.
12. An edible composition according to any of claims 9 to claim 1 1 wherein the molar ratio of Phloretin to Eucalyptol or Vanillin or a combination thereof is in the range 4:1 to 1 :4, preferably 3:1 to 1 :3, most preferably 2:1 to 1 :2, even more preferably 1.5:1 to 1 :1 .5, most preferably 1 .25:1 to 1 :1.25.
PCT/EP2018/067476 2017-06-30 2018-06-28 Edible composition WO2019002499A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP17179146 2017-06-30
EP17179154.4 2017-06-30
EP17179155 2017-06-30
EP17179155.1 2017-06-30
EP17179146.0 2017-06-30
EP17179154 2017-06-30

Publications (1)

Publication Number Publication Date
WO2019002499A1 true WO2019002499A1 (en) 2019-01-03

Family

ID=62749001

Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/EP2018/067476 WO2019002499A1 (en) 2017-06-30 2018-06-28 Edible composition
PCT/EP2018/067477 WO2019002500A1 (en) 2017-06-30 2018-06-28 Edible composition
PCT/EP2018/067475 WO2019002498A1 (en) 2017-06-30 2018-06-28 Edible composition

Family Applications After (2)

Application Number Title Priority Date Filing Date
PCT/EP2018/067477 WO2019002500A1 (en) 2017-06-30 2018-06-28 Edible composition
PCT/EP2018/067475 WO2019002498A1 (en) 2017-06-30 2018-06-28 Edible composition

Country Status (1)

Country Link
WO (3) WO2019002499A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080305052A1 (en) * 2005-07-27 2008-12-11 Symrise Gmbh & Co. Kg. Use of Hesperetin for Enhancing the Sweet Taste
US20100233102A1 (en) * 2006-03-22 2010-09-16 Symrise Gmbh & Co. Kg Use of 4-hydroxydihydrochalcones and their salts for enhancing an impression of sweetness
WO2012008474A1 (en) 2010-07-14 2012-01-19 富田製薬株式会社 Fructose absorption inhibitor
US20140107052A1 (en) * 2011-06-06 2014-04-17 Mark John Berry Edible composition
US20140128585A1 (en) 2011-07-07 2014-05-08 Nagaoka Perfumery Co., Ltd. Fructose absorption inhibitor
US20140170083A1 (en) * 2011-06-01 2014-06-19 Symrise Ag Orally consumable formulations comprising certain sweet-tasting triterpenes and triterpene glycosides
KR20160025275A (en) * 2014-08-27 2016-03-08 대상 주식회사 Composition for inhibiting the absorption of fructose and method for the absorption of the fructose

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080305052A1 (en) * 2005-07-27 2008-12-11 Symrise Gmbh & Co. Kg. Use of Hesperetin for Enhancing the Sweet Taste
US20100233102A1 (en) * 2006-03-22 2010-09-16 Symrise Gmbh & Co. Kg Use of 4-hydroxydihydrochalcones and their salts for enhancing an impression of sweetness
WO2012008474A1 (en) 2010-07-14 2012-01-19 富田製薬株式会社 Fructose absorption inhibitor
US20140170083A1 (en) * 2011-06-01 2014-06-19 Symrise Ag Orally consumable formulations comprising certain sweet-tasting triterpenes and triterpene glycosides
US20140107052A1 (en) * 2011-06-06 2014-04-17 Mark John Berry Edible composition
US20140128585A1 (en) 2011-07-07 2014-05-08 Nagaoka Perfumery Co., Ltd. Fructose absorption inhibitor
KR20160025275A (en) * 2014-08-27 2016-03-08 대상 주식회사 Composition for inhibiting the absorption of fructose and method for the absorption of the fructose

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BAISHAKHI DEY ET AL: "Chemo-profiling of eucalyptus and study of its hypoglycemic potential INTRODUCTION", WORLD J DIABETES, 1 January 2013 (2013-01-01), pages 170 - 176, XP055425279, Retrieved from the Internet <URL:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3797882/pdf/WJD-4-170.pdf> [retrieved on 20171115], DOI: 10.4239/wjd.v4.i5.170 *
CAMPBELL ET AL.: "Cost-effective colorimetric microtitre plate enzymatic assays for sucrose, glucose and fructose in sugarcane tissue extracts", J SCI FOOD AGRIC, vol. 79, 1999, pages 232 - 236

Also Published As

Publication number Publication date
WO2019002498A1 (en) 2019-01-03
WO2019002500A1 (en) 2019-01-03

Similar Documents

Publication Publication Date Title
Bondonno et al. The cardiovascular health benefits of apples: Whole fruit vs. isolated compounds
Matsuo et al. Effects of dietary D-psicose on diurnal variation in plasma glucose and insulin concentrations of rats
Santos-Zea et al. Agave (Agave spp.) and its traditional products as a source of bioactive compounds
Stacewicz-Sapuntzakis et al. Chemical composition and potential health effects of prunes: a functional food?
Busserolles et al. Substituting honey for refined carbohydrates protects rats from hypertriglyceridemic and prooxidative effects of fructose
Shetty et al. Effect of bitter gourd (Momordica charantia) on glycaemic status in streptozotocin induced diabetic rats
Bhaskar et al. Beneficial effects of banana (Musa sp. var. elakki bale) flower and pseudostem on hyperglycemia and advanced glycation end-products (AGEs) in streptozotocin-induced diabetic rats
EP2203070B1 (en) Pomegranate extracts, nutritional products containing them and their uses
Soltan et al. Antidiabetic and hypocholesrolemic effect of different types of vinegar in rats
US7504118B2 (en) Dietary supplements containing extracts of cinnamon and methods of using same to enhance creatine transport
Juśkiewicz et al. Consumption of polyphenol concentrate with dietary fructo-oligosaccharides enhances cecal metabolism of quercetin glycosides in rats
EP2928323B1 (en) An edible composition comprising resveratrol and flavonoid monoglucoside.
JP7515907B2 (en) Orally ingested choline ester-containing composition
Jensen et al. Mini-review: the effects of apples on plasma cholesterol levels and cardiovascular risk–a review of the evidence
Yagi et al. The study on long-term toxicity of D-psicose in rats
US10350259B2 (en) Sugar cane derived extracts and methods of treatment
US20200206245A1 (en) Maintenance of aging muscle tissue
JP2017093454A (en) Compositions and methods for stability of reactive amino acids in a food matrix
Reis et al. Effect of processing methods on yacon roots health-promoting compounds and related properties
US9132162B2 (en) Muscadine compositions with anti-oxidant activity
WO2019002499A1 (en) Edible composition
KR101979001B1 (en) Composition for the effect of suppressing the elevation of blood sugar level having extract of peanut sprouts as active component
US20200061090A1 (en) Agent for preventing worsening of insulin resistance or ameliorating insulin resistance
US20160082061A1 (en) Nutritional composition and method of manufacture
US20220218735A1 (en) Materials and methods for producing arabinoxylan compositions

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18734236

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18734236

Country of ref document: EP

Kind code of ref document: A1