DE102006040276A1 - Use of mono- or disaccharides to mask odors, and methods and composition for masking odors - Google Patents

Abstract

The invention relates to the use of at least one mono- and / or at least one disaccharide for masking odors and an aqueous composition for masking odors, at least containing a mono- and / or disaccharide and optionally auxiliaries and additives, and a method for reducing Odors wherein an article or a surface from which a smell emanates is treated with an effective amount of the composition of the invention. With the invention can u. a. Masking odors caused by substances with a strong odor or substances with a low odor threshold, such as: As vanillin, garlic, onion smell and also "tobacco smoke". The odor masking agents according to the invention can be used in many areas, for example for the neutralization of unpleasant odors such as tobacco smoke, cooking and frying odors or body and animal odors.

Description

The The invention relates to the use of mono- or disaccharides for Masking of odors as well a method and composition for masking odors.

The Odor masking according to the invention Means can be used in many areas, such as for neutralization unpleasant odors such as tobacco smoke, cooking and frying smells or body and animal odors.

Out The prior art already has means and methods for masking of odors known.

there if a smell is caused by a more intense odor, e.g. through use drowned in a perfume. adversely At this procedure is that an odor load by another is replaced. The cause is not eliminated.

Farther is known to trigger the smell Fabric by the use of so-called odor absorbers, e.g. based from zeolite or activated carbon. A disadvantage of this Method is that in particular activated carbon, but also zeolites are not suitable, the perceived as unpleasant odors by applying to mask on living or wearing textiles.

to Odor masking will as well also cyclodextrins or cyclodextrin derivatives used. cyclodextrins are toroidally shaped cyclic oligosaccharides consisting of α-1,4-glucosidically linked glucose molecules. According to the number of glucose molecules a distinction is made between α-cyclodextrin (Composed of six glucose molecules), β-cyclodextrin (Composed of seven glucose molecules), γ-cyclodextrin (eight glucose molecules) and δ-cyclodextrin (Nos Glucose molecules). Cyclodextrins possess a hydrophobic central cavity, in the lipophilic compounds can be included.

Cyclodextrin-based air improvers or textile-based binders bind the compounds responsible for the unpleasant odors in the central cavities of the cyclodextrin (US Pat. 1 ). This will mask the odor of the entrapped substances.

covalently Cyclodextrin derivatives associated with textile fibers are used to make "smart textiles" which e.g. Bind body odors should.

adversely on the use of cyclodextrins or cyclodextrin derivatives In particular, the fact that cyclodextrins are relatively expensive and the inclusion of the target substances are kinetics can be inhibited because the lipophilic, the unpleasantly felt Odor triggering Particles the hydrophilic barrier must first penetrate water before it can be complexed by cyclodextrins.

α-cyclodextrin is also classified as an irritant substance, especially as an eye irritant.

task The invention therefore provides methods and means for odor masking to provide that cheaper than those of the prior art known agents can be produced and a substance inclusion also then still allow when it is kinetically inhibited in cyclodextrins. In addition, should the substances used are non-toxic or irritating.

According to the invention Task solved by the use of at least one mono- and / or one disaccharide for masking of odors.

Surprisingly Mono- or disaccharides are able to mask odors. By gas chromatographic Investigations were made by the inventors e.g. prove that the vanilla smell retained by the use of mono- or disaccharides can be.

As 2 shows, mono- and disaccharides adopt a structure that divides them into a hydrophilic and a hydrophobic domain. Hydrophobic interactions with the lipophilic agent at the hydrophobic interface stabilize this structure. Upon addition of a second saccharide unit, this process repeats itself, profiting from the presence of a saccharide at this stage, since hydrophilic interactions of the sugars (hydrogen bonding) facilitate co-deposition. By adding more sugar molecules, the growing complex is completed. The advantage is that due to the hydrophobic interactions, the lipophilic particle from the hydrophobic interface is directly captured while it is cyclodextrins (s. 1 ) would first have to carry out the kinetically unfavorable transfer into the hydrophilic phase.

Advantageous form the mono- and disaccharides with the odoriferous substances dynamic complexes so that a substance inclusion is possible even then when it is kinetically inhibited in cyclodextrins.

moreover are the mono- and disaccharides cheaper than cyclodextrins.

mono- and disaccharides like glucose and maltose are not toxic and not marked with a danger symbol in contrast to α-cyclodextrin, which is classified as an irritant substance and in particular as an eye irritant applies.

moreover Mono- and disaccharides such as glucose and maltose are more soluble in water than Cyclodextrins, especially as α-cyclodextrin. This is particularly advantageous when residues of the odor mask according to the invention Agent and the odoriferous substances included therein simply e.g. should be eliminated by washing.

With The invention can be u.a. Mask odors that are intense smelling substances or substances with a low odor threshold caused such. Vanillin, garlic, onion smell and also "tobacco smoke".

In a preferred embodiment invention, the monosaccharide is selected from the group consisting from trioses, tetroses, pentoses, hexoses or heptoses or theirs Derivatives. Particularly preferred is an embodiment in which the monosaccharide selected is selected from the group consisting of glyceraldehyde, dihydroxyacetone, Erythrose, threose, erythrulose, arabinose, lyxose, ribose, deoxyribose, Xylose, ribulose, xylulose, allose, galactose, glucose, mannose and fructose. Particularly suitable is the use of glucose proved.

The Disaccharide is selected in a preferred embodiment of the invention the group consisting of reducing and non-reducing disaccharides or their derivatives. Particularly preferred is an embodiment in which the disaccharide is selected is selected from the group consisting of trehalose, maltose, sucrose or lactose. Particularly suitable is the use of sucrose and / or Maltose proved.

The Mono- and disaccharides are used singly or in combination.

The The invention also encompasses an aqueous one Composition for masking odors containing at least one mono- and / or a disaccharide and optionally auxiliaries and additives contains.

Preferably is the concentration of the mono- or disaccharides (s) substantially between 1 and 30 weight percent, preferably between 5 and 20 Weight percent, more preferably between 7.5 and 15 weight percent.

In a preferred embodiment the aqueous Odor masking composition is the monosaccharide selected from the group consisting of trioses, tetroses, pentoses, hexoses or Heptoses or their derivatives. Particularly preferred is an aqueous composition for masking odors, in which the monosaccharide is selected is selected from the group consisting of glyceraldehyde, dihydroxyacetone, Erythrose, threose, erythrulose, arabinose, lyxose, ribose, deoxyribose, Xylose, ribulose, xylulose, allose, galactose, glucose, mannose and fructose. Particularly suitable is the use of glucose in an aqueous Composition for masking odors proven.

The Disaccharide is in a preferred embodiment of the aqueous Composition for masking odors selected from the group consisting from reducing and non-reducing disaccharides or their Derivatives. Particularly preferred is an aqueous composition for Masking odors, in which the disaccharide is selected is selected from the group consisting of trehalose, maltose, sucrose or lactose. Particularly suitable is the use of sucrose and / or maltose in an aqueous Composition for masking odors proven.

The mono- and disaccharides become individual in the aqueous composition according to the invention or used in combination.

The Inventive aqueous composition is preferably in a sprayable form before, so that smells easily, for example, by spraying the odor causing Object can be masked. For example, you can with the agent according to the invention Textiles such as cotton, wool or skins are treated.

Also A component of the invention is a method for reducing Smells, wherein an object or a surface of which a smell starting with an effective amount of the composition according to the invention is treated.

In a preferred embodiment of the method becomes the object or surface of which the smell goes out, with an effective amount of the composition according to the invention sprayed.

Based following figures and embodiments the invention will be closer explains without restricting them.

there demonstrate

1 Complexation of the odor molecule vanillin by cyclodextrin

2 Complexation of the odor molecule vanillin by maltose (left) and glucose (right). Deposited in gray are the hydrogen bonds between the glucose units. In contrast, the glucose molecules are glycosidically linked in cyclodextrins.

embodiment 1:

Suppression of the smell of vanillin

One great Sheet cellulose filter paper (diameter 20 cm) became equal in four size Parts shared. The individual parts were processed differently.

Part 1 (for blank value determination):

The first quarter of the filter paper was sprayed with 1 ml of deionized H ₂ O and completely dried at room temperature. Subsequently, the filter paper was divided into two equal parts. Both parts (eighths) were cut into small pieces and investigated with headspace gas chromatography using 3 ml of water at a sample temperature of 70 ° C.

It could be expected no vanillin be detected.

Part 2 (for blank value determination):

The second quarter of the filter paper was washed with 1 ml of aq sugar solution (10 wt .-%) sprayed and at room temperature completely dried. Subsequently The filter paper was divided into two equal parts. Both parts (Eighths) were minced and headspace-gas chromatographed with 3 ml of water each at a sample temperature of 70 ° C examined.

Also As expected, no vanillin could be found here be detected.

Part 3 (retention effect of vanillin by sugar):

The third quarter of the filter paper was mixed with 1 ml of aq solution [10% by weight of sugar and saturated Vanillin (5 mg / ml)] sprayed and at room temperature completely dried. Subsequently The filter paper was divided into two equal parts. Both parts (Eighths) were minced and headspace-gas chromatographed with 3 ml of water each at a sample temperature of 70 ° C examined.

Here Vanillin was detected.

Part 4 (Vanilla detection without retention effect):

The fourth quarter of the filter paper was saturated with 1 ml Vanillin solution (5 mg / ml) sprayed and at room temperature completely dried. Subsequently The filter paper was divided into two equal parts. Both parts (Eighths) were minced and headspace-gas chromatographed with 3 ml of water each at a sample temperature of 70 ° C examined.

Here Vanillin was detected.

The are vanillin peak areas determined by headspace gas chromatography summarized in Table 1.

The headspace-gas chromatographically determined vanillin peak areas (Table 1) showed that in the filter paper - which with aqueous Vanilla sugar solution sprayed was the determined vanillin peak areas significantly smaller than the filter paper treated without sugar. These effects are of the order of magnitude of about 30% peak area loss to observe and agree on repeat measurements.

Table 1: Examination of filter papers

Sample preparation:

• Filter paper cellulose
• Adding (spraying) of 1.0 ml aq. solutions with / without sugar s. u.
• Dry for 2 h
• finely chopped
• Add 3 ml H ₂ O to the dried filter paper

material Peak area vanillin Filter + water 0 Filter + water + sugar 0 Filter + water + sugar + vanillin 89,000 Δ 33% Filter + water + vanillin 133500 See: 2 ml vanillin solution (saturated) + 1 ml H ₂ O (without filter paper) 450000 Used chemicals: Sugar: sucrose Sugar solution: 10% by weight of sugar in water Vanilla sugar solution: in saturated aqueous vanillin solution was 10 wt .-% Sac Charose solved Filter paper: cellulose was sprayed with 1 ml of the aqueous solutions (see above)

Claims (16)

Use of at least one mono- and / or at least a disaccharide to mask odors. Use according to claim 1, characterized that the monosaccharide is selected is from the group consisting of trioses, tetroses, pentoses, hexoses or heptoses and their derivatives. Use according to claim 2, characterized that the monosaccharide is selected is selected from the group consisting of glyceraldehyde, dihydroxyacetone, Erythrose, threose, erythrulose, arabinose, lyxose, ribose, deoxyribose, Xylose, ribulose, xylulose, allose, galactose, glucose, mannose and fructose. Use according to claim 1, characterized that the disaccharide is selected is from the group consisting of reducing and nonreducing Disaccharides and their derivatives. Use according to claim 4, characterized that the disaccharide is selected is selected from the group consisting of trehalose, maltose, sucrose and lactose. aqueous Composition for masking odors, containing at least a mono- and / or disaccharide and optionally auxiliaries and additives. Composition according to Claim 6, characterized that the concentration of the mono- or disaccharides (s) is substantially between 1 and 30 weight percent. Composition according to Claim 7, characterized that the concentration of the mono- or disaccharides (s) is substantially between 5 and 20 percent by weight. Composition according to Claim 8, characterized that the concentration of the mono- or disaccharides (s) is substantially between 7.5 and 15 weight percent. Composition according to Claim 6, characterized that the monosaccharide is selected from the group consisting of trioses, tetroses, pentoses, hexoses or heptoses and their derivatives. Composition according to Claim 10, characterized that the monosaccharide is selected from the group consisting of glyceraldehyde, dihydroxyacetone, erythrose, Threose, erythrulose, arabinose, lyxose, ribose, deoxyribose, xylose, Ribulose, xylulose, allose, galactose, glucose, mannose and fructose. Composition according to Claim 6, characterized that the disaccharide is selected is from the group consisting of reducing and nonreducing Disaccharides and their derivatives. Composition according to Claim 12, characterized that the disaccharide is selected is selected from the group consisting of trehalose, maltose, sucrose and lactose. A composition according to any one of claims 6 to 13, characterized in that the composition in sprayable form is present. A method for reducing odors, wherein an object or a surface, from which emanates a smell, with an effective amount of a Composition according to one of claims 7 to 14 is treated. A method for reducing odors after Claim 15, characterized in that the object or the Surface, from which the smell emanates, with an effective amount of a A composition according to any one of claims 7 to 14 is sprayed.