CN102090511B - Feed additive containing natural lutein and preparation method thereof - Google Patents
Feed additive containing natural lutein and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a feed additive containing natural lutein and a preparation method thereof. The feed additive is prepared by emulsifying an aqueous phase and an oil phase, wherein the weight part ratio of the oil phase to the aqueous phase is (2.7-3.3):7; the aqueous phase is prepared by mixing deionized water and disodium hydrogen phosphate, and the weight volume ratio of the disodium hydrogen phosphate to the deionized water is 1g: (650-750)L; and the oil phase is prepared by mixing extracted oil, Tween-80 and glycerin monostearate in a weight part ratio of (38-42):(7-11):(10-14), wherein the extracted oil is prepared from the following raw materials in part by weight: 15 to 25 parts of fish oil or plant oil, and 8 to 15 parts of marigold petal powder. In the preparation method, the fish oil or the plant oil is taken as a carrier of a marigold extract, can fully extract effective ingredients of marigolds, and play a role in preventing the extract from being oxidized. The product can be utilized by animals better.
Description
Technical field
The invention belongs to the feed addictive manufacture field, be specifically related to feed addictive that contains natural carotenol and preparation method thereof.
Background technology
Fish oil is the very high natural health care of a kind of value; Polyunsaturated fatty acid EPA that it is contained and DHA have functions such as the platelet aggregation of inhibition, antithrombotic, vasodilator, adjustment blood fat and raising biomembrane flowability, at aspects such as treating and prevent and treat angiocardiopathy, diabetes, dermatitis, big enterelcosis and inhibition tumour curative effect are preferably arranged all.Recent study finds that also DHA has the cerebral function of improvement, strengthens the retinal reflex ability and prevents function such as senile dementia.The seashore line length of China, the fish oil resource is very abundant.China is also fewer to the development and use of fish oil functional food at present, and its development prospect is boundless.
Marigold is composite family Tagetes 1 year or herbaceos perennial, and another name tagetes erecta, big lotus, honeycomb chrysanthemum, golden aster have calming liver and clearing heat, wind-expelling pain-stopping, preventing phlegm from forming and stopping coughing, the effect of activating blood to promote menstruation.Marigold contains abundant lutein, is the desirable feedstock of extracting natural yellow pigment.The aztec marigold leaf flavine can delay vision degeneration and the blind disease that the elderly degenerates and to cause because of chloasma, and the cardiovascula arteriosclerosis, coronary heart disease and the tumor disease that cause because of body aging.Marigold uranidin (lutein) is a kind of nutrition and all very high natural function property pigment of practical value.The U.S. just extracts lutein since the seventies in 20th century from marigold, be to be added in the chicken feed the earliest, can improve the nutritive value of egg.Lutein can also be applied in the industries such as cosmetics, feed, medicine, aquatic products.On the international market, the price of 1 gram lutein is suitable with 1 gram gold.Lutein is the main extract in the marigold, and it is widely used in feed addictive and food additives field.In recent years, lutein is used for the research and development of functional health-care food in a large number and is produced.Yet China is less to the research and development of marigold uranidin (lutein), and generally extracts with organic solvent method, can lose some water-soluble nutritional labelings inevitably.
Summary of the invention
First technical problem that the present invention will solve provides a kind of feed addictive that contains natural carotenol.Lutein content reaches 1.5～2.0% in this feed addictive, and is better than the lutein coloring effect of same amount on the market.
Second technical problem that the present invention will solve provides a kind of preparation method who contains the feed addictive of natural carotenol.This method is utilized water and the extraction process that organic oil phase combines, and guarantees to make full use of the active ingredient of marigold, and fish oil or vegetable oil play the not oxidized effect of protection extract as the carrier of Flos Tagetis Erectae extract.
For solving above-mentioned first technical problem, technical scheme that the present invention adopts is:
A kind of feed addictive that contains natural carotenol, it carries out emulsification through water and oil phase and prepares, and the ratio of weight and number of wherein said oil phase and water is 2.7～3.3: 7;
Said water is that deionized water and sodium hydrogen phosphate are mixed, and the w/v of this sodium hydrogen phosphate and deionized water is 1g: 650～750L;
Oil and Tween 80 and monoglyceride are mixed to be got said oil phase for collection is carried, and the ratio of weight and number that this collection is carried oil, Tween 80 and monoglyceride is 38～42: 7～11: 10～14; It is that raw material by following weight parts makes: 15～25 parts of fish oil or vegetable oil, 8～15 parts in marigold petal powder that wherein said collection is carried oil.
Said fish oil is refining winterization fish oil; Said vegetable oil is soybean oil, salad oil, peanut oil, olive oil, palm oil, green soy bean oil or rapeseed oil.
Said marigold petal powder is to make through following method: the marigold that aquatic foods are plucked is removed the scape flower bud, with petal airing 8～10 hours, pulverizes 100 mesh sieves.
For solving above-mentioned second technical problem, technical scheme that the present invention adopts is:
A kind of preparation method who contains the feed addictive of natural carotenol, this method may further comprise the steps:
(1) the oil collection is extracted lutein and nutritional labeling
15～25 parts of fish oil or vegetable oil are put into the steam pot, slowly add 8～15 parts of marigold petal powder, heat while stirring, stop after being warming up to 75～90 ℃ heating up, insulated and stirred is 2～4 hours continuously, stops heating then, obtains the extract that comes together;
(2) separation of collection extract
The collection extract that step (1) is made leaves standstill to be deposited, and is divided into two-layerly up and down, extracts supernatant earlier, then the product of lower floor through 300 eye mesh screens, squeeze and filter, the filtered fluid that makes mix with said supernatant to obtain coming together carries oil;
(3) oil phase preparation
The collection that step (2) is made is carried oil and is mixed with Tween 80 and monoglyceride, and the ratio of weight and number that wherein said collection is carried oil, Tween 80 and monoglyceride is 38～42: 7～11: 10～14;
(4) water preparation
Deionized water is mixed with sodium hydrogen phosphate, and the w/v of said sodium hydrogen phosphate and deionized water is 1g: 650～750L;
(5) emulsification
Oil phase is heated to 85～95 ℃ while stirring, and water is heated to 95～98 ℃ while stirring simultaneously, then oil phase is joined aqueous phase; 4000～8000 rev/mins are stirred shearing 3～5 minutes, and adjusting rotating speed then is 7000～8000 rev/mins, continue to stir 15-20 minute; Add anticorrisive agent when cooling to 40～50 ℃; Stop after stirring stirring, make semi-finished product, the ratio of weight and number of wherein said oil phase and water is 2.7～3.3: 7;
(6) finished product
With getting product after the above-mentioned semi-finished product standing and defoaming.
In the step (5), said anticorrisive agent is potassium sorbate, Sodium Benzoate or sodium propionate.
The present invention has the following advantages:
1, the extraction process that combines of water and organic oil phase can fully extract the active ingredient in the marigold petal.
2, utilize that lutein content reaches 1.5～2.0% in the feed addictive of this prepared, better than on the market with equal size lutein coloring effect.
3, extract at present that the conventional method of lutein is directly to extract with organic solvent tetrahydrofuran, benzinum, carrene, methyl alcohol etc. in the plant; But because the lutein in the plant cell directly discharges into organic solvent not too easily; Extraction efficiency is low; And above-mentioned organic solvent can not be utilized by animal, needs to separate again, and technology is loaded down with trivial details.This extraction process is utilized the high characteristics of unrighted acid in fish oil or the vegetable oil, can prevent effectively that lutein is oxidized, also is the required good aliphatic acid of animal.And make the various biological effective ingredient of marigold better utilized by animal through emulsifying process.
4, to be added in the oil phase be suspended particles to the marigold powder crossed of ultramicro grinding, do not precipitated, and has good mobile and dispersed.
The specific embodiment
Embodiment 1
(1) the oil collection is extracted lutein and nutritional labeling
15 parts of fish oil are put into the steam pot, slowly add 8 parts of marigold petal powder, heat while stirring, stop after being warming up to 75 ℃ heating up, insulated and stirred is 2 hours continuously, stops heating then, obtains the extract that comes together; Wherein, said fish oil is preferably refining winterization fish oil; Said marigold petal powder is to make through following method: the marigold that aquatic foods are plucked is removed the scape flower bud, with petal airing 8～10 hours, pulverizes 100 mesh sieves.
(2) separation of collection extract
The collection extract that step (1) is made leaves standstill to deposit and is divided into two-layerly up and down after 24 hours, extracts supernatant earlier, then the product of lower floor through 300 eye mesh screens, squeeze and filter, the filtered fluid that makes mix with said supernatant to obtain coming together carries oil;
(3) oil phase preparation
The collection that step (2) is made is carried oil and is mixed with Tween 80 and monoglyceride, and the ratio of weight and number that wherein said collection is carried oil, Tween 80 and monoglyceride is 38: 7: 10;
(4) water preparation
Deionized water is mixed with sodium hydrogen phosphate, and the w/v of said sodium hydrogen phosphate and deionized water is 1g: 650L;
(5) emulsification
Oil phase is heated to 85 ℃ while stirring, and water is heated to 95 ℃ while stirring simultaneously, then oil phase is joined aqueous phase; 4000 rev/mins are stirred shearing 3 minutes, and adjusting rotating speed then is 7000 rev/mins, continue to stir 15 minutes; Add anticorrisive agent when cooling to 40 ℃; Stop after stirring stirring, make semi-finished product, the ratio of weight and number of wherein said oil phase and water is 2.7: 7;
(6) finished product
Deposited 24 hours above-mentioned semi-finished product are static, get product after the standing and defoaming.
In step (5), said anticorrisive agent is a potassium sorbate.
Embodiment 2
(1) the oil collection is extracted lutein and nutritional labeling
25 portions of soybean oils are put into the steam pot, slowly add 15 parts of marigold petal powder, heat while stirring, stop after being warming up to 90 ℃ heating up, insulated and stirred is 4 hours continuously, stops heating then, obtains the extract that comes together; Wherein, said marigold petal powder is to make through following method: the marigold that aquatic foods are plucked is removed the scape flower bud, with petal airing 8～10 hours, pulverizes 100 mesh sieves.
(2) separation of collection extract
The collection extract that step (1) is made leaves standstill to deposit and is divided into two-layerly up and down after 24 hours, extracts supernatant earlier, then the product of lower floor through 300 eye mesh screens, squeeze and filter, the filtered fluid that makes mix with said supernatant to obtain coming together carries oil;
(3) oil phase preparation
The collection that step (2) is made is carried oil and is mixed with Tween 80 and monoglyceride, and the ratio of weight and number that wherein said collection is carried oil, Tween 80 and monoglyceride is 42: 11: 14;
(4) water preparation
Deionized water is mixed with sodium hydrogen phosphate, and the w/v of said sodium hydrogen phosphate and deionized water is 1g: 750L;
(5) emulsification
Oil phase is heated to 95 ℃ while stirring, and water is heated to 98 ℃ while stirring simultaneously, then oil phase is joined aqueous phase; 8000 rev/mins are stirred shearing 5 minutes, and adjusting rotating speed then is 7000 rev/mins, continue to stir 20 minutes; Add anticorrisive agent when cooling to 50 ℃; Stop after stirring stirring, make semi-finished product, the ratio of weight and number of wherein said oil phase and water is 3.3: 7;
(6) finished product
Deposited 24 hours above-mentioned semi-finished product are static, get product after the standing and defoaming.
In step (5), said anticorrisive agent is a Sodium Benzoate.
Embodiment 3
(1) the oil collection is extracted lutein and nutritional labeling
20 portions of rapeseed oils are put into the steam pot, slowly add 10 parts of marigold petal powder, heat while stirring, stop after being warming up to 80 ℃ heating up, insulated and stirred is 3 hours continuously, stops heating then, obtains the extract that comes together; Wherein, said marigold petal powder is to make through following method: the marigold that aquatic foods are plucked is removed the scape flower bud, with petal airing 8～10 hours, pulverizes 100 mesh sieves.
(2) separation of collection extract
The collection extract that step (1) is made leaves standstill to deposit and is divided into two-layerly up and down after 24 hours, extracts supernatant earlier, then the product of lower floor through 300 eye mesh screens, squeeze and filter, the filtered fluid that makes mix with said supernatant to obtain coming together carries oil;
(3) oil phase preparation
The collection that step (2) is made is carried oil and is mixed with Tween 80 and monoglyceride, and the ratio of weight and number that wherein said collection is carried oil, Tween 80 and monoglyceride is 40: 9: 12;
(4) water preparation
Deionized water is mixed with sodium hydrogen phosphate, and the w/v of said sodium hydrogen phosphate and deionized water is 1g: 700L;
(5) emulsification
Oil phase is heated to 90 ℃ while stirring, and water is heated to 97 ℃ while stirring simultaneously, then oil phase is joined aqueous phase; 6000 rev/mins are stirred shearing 4 minutes, and adjusting rotating speed then is 8000 rev/mins, continue to stir 18 minutes; Add anticorrisive agent when cooling to 45 ℃; Stop after stirring stirring, make semi-finished product, the ratio of weight and number of wherein said oil phase and water is 3: 7;
(6) finished product
Deposited 24 hours above-mentioned semi-finished product are static, get product after the standing and defoaming.
In step (5), said anticorrisive agent is a sodium propionate.
Embodiment 4
Adopt the feed addictive of embodiment 1 method preparation to carry out following test, visible feed addictive of the present invention can improve the body immunity (disease-resistant, anti-poor environment) of animal, and survival rate, and has reduced feed coefficient, and gaining effect is remarkable.
Test the effect test of the feed addictive nursing of adding the preparation of embodiment 1 method 1 seedling stage
Somewhere plant establishes three and handles experiment, feeding period 132 natural gift ponds, and the result sees table 1.
Seedling stage is added the effect of the feed addictive test contrast of embodiment 1 preparation in table 1 soft-shelled turtle field
Can find out from table 1: the weight according to 0.7% and 0.1% is added the feed addictive of embodiment 1 preparation the soft-shelled turtle feed to; Add 0.7% feed addictive test group and improve survival rate 27.70%, add 0.1% feed addictive test group and improve survival rate 28.47% than control group than control group.It is 28.10% that test group on average improves survival rate than control group.This test is through analyzing, and test group and control group difference reach the level of signifiance.
Control group soft-shelled turtle body colour Dark grey, color and luster is dim, and additive group body colour is faint yellow, and bright in color.Explain that this feed addictive can effectively change the body colour of letting animals feed.
Test 2 somewhere plants, the weight according to 0.5% and 0.7% is added the feed addictive of embodiment 1 preparation in the soft-shelled turtle feed to, respectively establishes two repetitions, and contrast is only established one, and experimental period is 120 days, branchs pond, weigh, several tail, see table 2.
Seedling stage is added the effect of the feed addictive repeated test of embodiment 1 preparation in table 2 soft-shelled turtle field
Can find out from table 2:
1, according to 0.5% and 0.7% weight the feed addictive that embodiment 1 prepares is added in the soft-shelled turtle feed, the survival rate of test group improves 19.3% and 17.2% than control group respectively.Feed coefficient has descended 1.5 and 1.53 respectively.
2, control group soft-shelled turtle body colour Dark grey, color and luster is dim, and additive group soft-shelled turtle body colour is faint yellow, and bright in color.Explain that feed addictive of the present invention can effectively change the body colour of letting animals feed.
Test 3 tests in Ningde two all certain large yellow croaker nursery carry out, select cement pit for use, 150 square metres of areas, dark 1.5 meters of pond, 1.0 meters of the depth of waters, feeding period is 165 days.Result of the test is seen table 3.
Table 3 large yellow croaker is added the feed addictive culture experiment effect of embodiment 1 preparation seedling stage
Can find out from table 3:
1, according to 0.5% and 0.7% weight the feed addictive that embodiment 1 prepares is added in the large yellow croaker feed in seedling stage; Raised fry 45 days; Add the comparison of 0.7% additive test group and improve 10.2% according to forming motility rate; The test group comparison that adds 0.1% additive improves 15.4% according to forming motility rate, and this test is through dividing difference analysis, and test group and control group difference reach the level of signifiance.
2, to the treatment group, it is light grey that body colour is, and additive group body colour is faint yellow.Explain that gold first additive can effectively improve the body colour of cultured large yellow croaker.
Plant carries out in Ningde to test 4 lefteye flounder fish tests, selects cement pit for use, 120 square metres of areas, dark 1.2 meters of pond, 0.9 meter of the depth of water. and feeding period is 120 days, adds each three repetition of test group and control group with 0.7% and 0.1% ratio.
Table 4 pair lefteye flounder fish is raised the feed addictive result of the test of adding embodiment 1 preparation
Can find out from table 4:
1, adds 0.7% additive and descend 1.1, add 0.1% additive and descend 0.9 than control group feed coefficient than control group feed coefficient.
2, add the comparison of 0.7% additive and improve 6.6%, add the comparison of 0.1% additive and improve 14.4% according to forming motility rate according to forming motility rate.
Sweetfish plant carries out in Ningde to test 5 tests, select for use at cement pit, and 150 square metres of areas, the pond is dark 1.2,0.9 meter of the depth of water, feeding period is 160 days.Weight according to 0.7% and 0.1% is added, each two repetition of test group and control group.
Table 5 pair sweetfish is raised and adds gold first additive result of the test
Can find out from table 5:
1, adds 0.7% additive and descend 0.32, add 0.1% additive and descend 0.51 than control group feed coefficient than control group feed coefficient.
2, add the comparison of 0.7% additive and improve 7.2%, add the comparison of 0.1% additive and improve 9.9% according to forming motility rate according to forming motility rate.
Embodiment 5 has improved the laying rate of letting animals feed
Tested November 20,2009 21 days to 2009 April in, the time is 224 days, and carry out the laying hen field in the Fuqing, and 1, the used basal diet of pilot scale: the feeding standard with reference to Chinese laying hen is formulated.2, test is with the selection of chicken: adopt single-factor RANDOMIZED BLOCK DESIGN scheme, selected for 19 ages in week for use, body weight is divided 3 groups at random 210 of 1.58-1.65kg/ the red plumage laying hens of healthy Hainan Luo Man, establishes 7 repetitions for every group, 10 chickens of every repetition.If 1 week of preliminary trial period, the every repetition chicken number of record in preliminary trial period, egg number, and feed intake are rejected and are eliminated few laying hen, formally test to 28 ages in week since 20 ages in week.3, feeding and management: all hen houses are four layers of staged of semi open model and raise in cages, and every cage 3-4 only.Every day, feeding was 2-3 time, free choice feeding; Freely drink water, day illumination 15-17 hour, natural lighting combines with artificial lighting, gravity-flow ventilation under the normal temperature.Every day 7:00,11:00, three feedings of 17:00, every day 10:00,14:00,17:30 picks up egg three times, the laying rate of every day is calculated in numeration simultaneously, decreases broken rate.
The feed addictive of table 6-1 embodiment 1 preparation is to the influence of laying hen body weight
6-1 can know by table; End body weight and changes of weight between whole test is wherein respectively handled all are increase trend; But biometrics difference is remarkable (P＞0.05) not; The feed addictive that shows embodiment 1 preparation is not remarkable to the increase heavy influence of laying hen, but weightening finish trend maximum is 1% additive group.
The feed addictive of table 6-2 embodiment 1 preparation is to the influence of laying hen egg laying performance
6-2 can know by table; Two groups of feed addictives do not have obvious influence (P＞0.05) to average daily feed intake and the broken soft egg rate of laying hen; But the laying rate to laying hen has tangible influence, and wherein 0.7% additive group improves 25.35%, 1% additive group than control group and improves 26.12% than control group.The feed that the gold first additive of the interpolation 0.7%～1% of throwing something and feeding being described can make laying hen raising laying rate reach more than 25%.
Obviously, the above embodiment of the present invention only be for clearly the present invention is described and is done for example, and be not to be qualification to embodiment of the present invention.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here can't give exhaustive to all embodiments.Everyly belong to the row that conspicuous variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.
Claims (5)
1. a feed addictive that contains natural carotenol is characterized in that, it carries out emulsification through water and oil phase and prepares, and the ratio of weight and number of wherein said oil phase and water is 2.7～3.3: 7;
Said water is that deionized water and sodium hydrogen phosphate are mixed, and the w/v of this sodium hydrogen phosphate and deionized water is 1g: 650～750L;
Oil and Tween 80 and monoglyceride are mixed to be got said oil phase for collection is carried, and the ratio of weight and number that this collection is carried oil, Tween 80 and monoglyceride is 38～42: 7～11: 10～14; It is that raw material by following weight parts makes: 15～25 parts of fish oil or vegetable oil, 8～15 parts in marigold petal powder that wherein said collection is carried oil;
This method may further comprise the steps:
(1) the oil collection is extracted lutein and nutritional labeling
15～25 parts of fish oil or vegetable oil are put into the steam pot, slowly add 8～15 parts of marigold petal powder, heat while stirring, stop after being warming up to 75～90 ℃ heating up, insulated and stirred is 2～4 hours continuously, stops heating then, obtains the extract that comes together;
(2) separation of collection extract
The collection extract that step (1) is made leaves standstill to be deposited, and is divided into two-layerly up and down, extracts supernatant earlier, then the product of lower floor through 300 eye mesh screens, squeeze and filter, the filtered fluid that makes mix with said supernatant to obtain coming together carries oil;
(3) oil phase preparation
The collection that step (2) is made is carried oil and is mixed with Tween 80 and monoglyceride, and the ratio of weight and number that wherein said collection is carried oil, Tween 80 and monoglyceride is 38～42: 7～11: 10～14;
(4) water preparation
Deionized water is mixed with sodium hydrogen phosphate, and the w/v of said sodium hydrogen phosphate and deionized water is 1g: 650～750L;
(5) emulsification
Oil phase is heated to 85～95 ℃ while stirring, and water is heated to 95～98 ℃ while stirring simultaneously, then oil phase is joined aqueous phase; 4000～8000 rev/mins are stirred shearing 3～5 minutes, and adjusting rotating speed then is 7000～8000 rev/mins, continue to stir 15-20 minute; Add anticorrisive agent when cooling to 40～50 ℃; Stop after stirring stirring, make semi-finished product, the ratio of weight and number of wherein said oil phase and water is 2.7～3.3: 7;
(6) finished product
With getting product after the above-mentioned semi-finished product standing and defoaming.
2. the feed addictive that contains natural carotenol according to claim 1 is characterized in that, said fish oil is refining winterization fish oil; Said vegetable oil is soybean oil, salad oil, peanut oil, olive oil, palm oil, green soy bean oil or rapeseed oil.
3. the feed addictive that contains natural carotenol according to claim 1 is characterized in that, said marigold petal powder is to make through following method: the marigold that aquatic foods are plucked is removed the scape flower bud, with petal airing 8～10 hours, pulverizes 100 mesh sieves.
4. like the described preparation method who contains the feed addictive of natural carotenol of the arbitrary claim of claim 1～3, it is characterized in that: this method may further comprise the steps:
(1) the oil collection is extracted lutein and nutritional labeling
15～25 parts of fish oil or vegetable oil are put into the steam pot, slowly add 8～15 parts of marigold petal powder, heat while stirring, stop after being warming up to 75～90 ℃ heating up, insulated and stirred is 2～4 hours continuously, stops heating then, obtains the extract that comes together;
(2) separation of collection extract
The collection extract that step (1) is made leaves standstill to be deposited, and is divided into two-layerly up and down, extracts supernatant earlier, then the product of lower floor through 300 eye mesh screens, squeeze and filter, the filtered fluid that makes mix with said supernatant to obtain coming together carries oil;
(3) oil phase preparation
The collection that step (2) is made is carried oil and is mixed with Tween 80 and monoglyceride, and the ratio of weight and number that wherein said collection is carried oil, Tween 80 and monoglyceride is 38～42: 7～11: 10～14;
(4) water preparation
Deionized water is mixed with sodium hydrogen phosphate, and the w/v of said sodium hydrogen phosphate and deionized water is 1g: 650～750L;
(5) emulsification
Oil phase is heated to 85～95 ℃ while stirring, and water is heated to 95～98 ℃ while stirring simultaneously, then oil phase is joined aqueous phase; 4000～8000 rev/mins are stirred shearing 3～5 minutes, and adjusting rotating speed then is 7000～8000 rev/mins, continue to stir 15-20 minute; Add anticorrisive agent when cooling to 40～50 ℃; Stop after stirring stirring, make semi-finished product, the ratio of weight and number of wherein said oil phase and water is 2.7～3.3: 7;
(6) finished product
With getting product after the above-mentioned semi-finished product standing and defoaming.
5. the preparation method who contains the feed addictive of natural carotenol according to claim 4 is characterized in that: in the step (5), said anticorrisive agent is potassium sorbate, Sodium Benzoate or sodium propionate.
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| CN104770588B (en) * | 2015-03-16 | 2018-03-13 | 湖州海皇生物科技有限公司 | A kind of Chinese trionyx sinensis feed for adding lutein and preparation method thereof |
| CN104782931B (en) * | 2015-03-16 | 2017-12-26 | 杭州海皇科技股份有限公司 | A kind of puffing granule compound feed for improving Shelled Turtle Trionyx Sinensis body colour and preparation method thereof |
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| CN1309693C (en) * | 2002-02-05 | 2007-04-11 | 海宁凤鸣叶绿素有限公司 | Lutein crystal preparing process from marigold flower |
| CN1286807C (en) * | 2005-05-27 | 2006-11-29 | 大庆金土地生物科技有限公司 | Lutein extracting process from marigold flower |
| CN101020917A (en) * | 2007-01-19 | 2007-08-22 | 大庆金土地生物科技有限公司 | Process of preparing lutein with marigold |
| CN101396068B (en) * | 2007-09-27 | 2013-05-01 | 浙江医药股份有限公司新昌制药厂 | Carotenoid preparation and use thereof and feedstuff containing the preparation and preparation method thereof |
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