CN1225183C - Selenium-riched protein and selenium-riched amino acid, prepn. method and use thereof - Google Patents
Selenium-riched protein and selenium-riched amino acid, prepn. method and use thereof Download PDFInfo
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Abstract
The present invention relates to selenium-rich protein and selenium-rich amino acid taking selenium-rich silkworm pupae as a raw material, a preparation method and foods with the selenium-rich protein and the selenium-rich amino acid for cancer prevention. In the method of the present invention, the selenium-rich fresh silkworm pupae with the selenium content of 1 to 5 mg Se/kg are treated by drying, degreasing and protein extracting with dilute alkali, the acidity of the solution is adjusted to separate out selenium-rich protein, and after the treatment of centrifugation and precipitation freeze drying, selenium-rich protein powder is obtained; the selenium-rich protein powder is further hydrolyzed to be made the into selenium-rich amino acid. The selenium-rich protein powder and the selenium-rich amino acid are made into definite does types, such as tablet pressing and capsule and oral liquid filling, for supplementing human body required amino acid in the mean time of the supplement of the trace element of selenium, and has the functions of nutrition health care and tumor prevention.
Description
Technical field
The present invention relates to a kind of is the selenium rich of egg white matter that makes of raw material and selenium-rich amino acid and preparation method thereof with rich selenium silkworm chrysalis; And have the selenium of benefit and pre-anti-cancer health care foods with the preparation of selenium rich of egg white matter and selenium-rich amino acid.
Background technology
Selenium is biological essential trace element.Selenium has the effect that strengthens immunity, anti-ageing and anti-curing oncoma in vivo.Scarce selenium causes body's immunity and oxidation resistance to reduce, and with being associated of multiple disease, replenish an amount of selenium and can improve immunity of organisms, prevent multiple disease, therefore be subjected to extensive attention.Propose in 1988 according to Chinese Soclety of Nutrition, adult's meals selenium quantity delivered every day (RDA) is 50 μ g.And in mending the anticancer grade of selenium intervention experiment, every day, the Selenium supplement agent amount was 200 μ g, and used selenium is Na
2SeO
3And selenium yeast.Selenium is in vivo mainly by selenium enzyme and selenoprotein performance biological function.Selenoprotein and contain selenoaminoacid has high bioavilability.
Be used to mend selenium compound at present and be mainly inorganic selenium such as Na
2SeO
3Deng.Inorganic selenium is bigger than organic selenium toxicity, and the working condition harshness of organic selenium, cost an arm and a leg, the method that obtains organic selenium at present is generally utilizes self transforming of some plants to selenium high-adaptability and high conversion, higher fungus, make inorganic selenium be converted into organic selenium, and then extract organic selenium.Obviously, the production cycle of this method is long, cost is high, and the availability of selenium is lower.
Silkworm chrysalis is from ancient times just as the food and the medicine of nourishing and fit keeping function and taste, longue meat.Studies confirm that the silkworm chrysalis nutritive value is high, be rich in essential amino acid, have and improve immunity, protection liver and function such as antitumor, is the fabulous source that replenishes essential amino acid.
Rich selenium silkworm chrysalis is converted into inorganic selenium by food chain has active containing selenoprotein, contain the selenium polypeptide and contain selenoaminoacid, they remove alimentary health-care function with common amino acid, also have pre-anti-cancer and antineoplastic medical value.For example the rich selenium silkworm chrysalis in Ziyang County is prepared into selenium rich of egg white matter and selenium-rich amino acid by the present invention, wherein protein and amino acid whose Se content are higher than 10mgSe/kg protein and 1 μ g Se/mL Freamine respectively.(Ziyang County, Shaanxi is China second largest rich selenium district, and domestic animals and plants product and human body selenium level exceed tens times to hundred times than Chinese common area.) prepared selenium-rich amino acid joins in the HCC SMMC-7721 culture medium of in vitro culture, finds that it can suppress the growth of human liver cancer cell, it obviously is better than the sodium selenite of identical selenium concentration to the inhibition of HCC.Selenium concentration is that the selenium-rich amino acid of 2.5 μ mol/L is 48.5% to the survival rate of HCC, and sodium selenite is 84.3% to the survival rate of HCC, and the amino acid in the common regional silkworm chrysalis promotes the growth of HCC, and survival rate surpasses 100%.Therefore selenium-rich amino acid is a kind of potential medicines resistant to liver cancer.
Also do not see at present selenium rich of egg white matter and the preparation method of selenium-rich amino acid and the patent report of preparation from rich selenium silkworm chrysalis.The existing report that relates to abundant amino acids from silkworm pupa, plant selenoprotein and selenium preparation has: CN 86101511 " with the method for extraction of chrysalis stinkingless protein with organic solvent "; CN1071199 " a kind of method of compound zymohydrolysis of silkworm chrysalis protein "; CN 1161338 " method for preparing natural selenic protein by quick bio-integration method "; CN 1388094 " selenium-rich amino acid and production method thereof "; CN1230433 " method of natural organic selenium extracting and series of products thereof " and CN 1437841 patents such as " inoculation methods of Biological Selenium goods ".The existing method of extracting organic selenium is generally utilizes self transforming of some plants to selenium high-adaptability and high conversion, higher fungus, makes inorganic selenium be converted into organic selenium, and then extracts organic selenium.Obviously, the production cycle of this method is long, cost is high, and the availability of selenium is lower.This method is not exclusively suitable for obtaining on selenium rich of egg white matter and selenium-rich amino acid and the preparation from rich selenium silkworm chrysalis.This is that wherein contained active selenium can lose or lose activity in unsuitable operation because containing selenoprotein is special protein and amino acid with containing selenoaminoacid.Simultaneously, because silkworm chrysalis is not a plant, its biotic component differs greatly, and therefore the preparation method about plant selenoprotein and selenium-rich amino acid can not indiscriminately imitate on the silkworm chrysalis.
Rich selenium silkworm chrysalis aboundresources, such as rich selenium silkworm chrysalis in the Ziyang County, Shaanxi, silkworm chrysalis behind the past filature all be as animal feed handle, cheap, therefore make full use of rich selenium silkworm chrysalis resource and prepare selenium rich of egg white matter and selenium-rich amino acid, will be with a wide range of applications.
Summary of the invention
The product that the objective of the invention is to also not obtain at existing market the health product of selenium rich of egg white matter and selenium-rich amino acid and organic selenium from rich selenium silkworm chrysalis is also rare on market.The invention provides a kind of is that the bright pupa of the rich selenium of 1～5mg Se/kg is feedstock production selenium rich of egg white matter and selenium-rich amino acid and preparation method thereof and health care preparation with Se content.Be used for Selenium Supplement in additional people's essential amino acid, make it have the function of nourishing healthy, pre-preventing tumor.And selenium also has antidotal effect in vivo as a kind of antioxidant.
The method that the present invention prepares selenium rich of egg white matter and selenium-rich amino acid is: with Se content is that the bright silkworm chrysalis of the rich selenium of 1～5mgSe/kg (is not the bright silkworm chrysalis of rich selenium, Se content only is the bright pupa of 0.025～0.1mg Se/kg) dry naturally or dry to the eighty per cant dried dried silkworm chrysalis of rich selenium that obtains, use petroleum ether degreasing again, diluted alkaline extracting protein, decolouring and deodorizing filters back adjusting acidity the selenium rich of egg white matter is separated out.
This selenium rich of egg white matter is the natural selenoprotein that extracts from rich selenium silkworm chrysalis, wherein organic selenium of combining with protein or amino acid with selenocysteine and derivative, selenomethionine and derivative thereof or certain intermolecular force of selenium.Solubility inorganic selenium and the organic selenium of little molecule are removed in the separation process of extracting protein.The Se content of this selenium rich of egg white matter is 10～20mgSe/kg protein;
Again rich selenium silkworm chrysalis protein and selenium-rich amino acid are made certain formulation, as compressing tablet, filled capsules and oral liquid etc.
1. the preparation method of selenium rich of egg white matter:
1. with Se content be 1～5mg Se/kg the bright silkworm chrysalis of rich selenium (for example, adopt Ziyang County, Shaanxi Province silkworm chrysalis) rinse well, naturally dry or dry the dried pupa of doing to eighty per cant, pulverize with pulverizer, carry out the Soxhlet extracting with benzinum again, the ratio of dried pupa and benzinum is 1g: 10～12mL, obtains the degreasing silkworm chrysalis;
2. adding concentration is that 25～40 ℃ of stirring and dissolving silkworm chrysalis proteins of 0.25～5% sodium hydroxide solution carried out the protein extracting in 8～12 hours, and the ratio of the sodium hydroxide solution of degreasing silkworm chrysalis and this concentration range is 1g: 10～15mL; Filter with woven dacron then, residue washs with low amounts of water, collects filtrate;
3. above-mentioned filtrate decolours with activated carbon and deodorizing was handled 4～8 hours, and the part by weight of protein and activated carbon is 1: 0.02～0.1 (protein content adopts Coomassie brilliant blue G-250 method to measure, down together);
4. regulating filtrate pH with 6mol/L HCl is 3～5,4 ℃ of standing over night, and next day, protein was separated out, with centrifuge in 2500～5000 rev/mins centrifugal, it is 10～20mg Se/kg selenium rich of egg white matter powder that the precipitation freeze drying promptly gets Se content.
The quality testing result: the protein yields in the dried silkworm chrysalis is 35～50%, the Se content of protein is 10～20mg Se/kg protein.
2. the preparation method of selenium-rich amino acid is as follows:
1. the selenium rich of egg white matter powder that is dissolved in water and adopts the above-mentioned method for preparing the selenium rich of egg white matter to obtain, the weight ratio of selenium rich of egg white matter and water is 1: 10～15;
2. in this solution, add trypsase and papain simultaneously; The weight ratio of trypsase, papain and selenium rich of egg white matter is 0.5～1.5: 1.5～2.5: 100 (the trypsase vigor is 11600 units/mg, the papain vigor is 0.5～2 unit/mg), hydrolysis is 8～12 hours under 25～45 ℃ of stirring condition, and the pH of enzyme digestion reaction liquid is 6～8;
3. 2500～4000 rev/mins of centrifugal filtrations of centrifuge, residue are again with adopting 1. and 2. same method is hydrolyzed;
Repeat said process and all dissolve until the selenium rich of egg white matter, promptly getting Se content is 1～2mg Se/mL selenium-rich amino acid solution; Spray-drying (≤60 ℃) promptly gets powder of amino acids.
Use the preparation of selenium rich of egg white matter and have the food of mending the selenium function
A. be used for normal population and mend selenium: making weight is 0.5 gram, and selenium content is the preparation of tablet 4～8 μ gSe/ sheets or capsule 4～8 μ g Se/ grains; Wherein contain selenium rich of egg white powder 40～65%; Starch 10%～50%; Sodium carboxymethylcellulose (disintegrant) 0%～15%; Sodium Benzoate (anticorrisive agent) 0%～1%, compressing tablet or filled capsules behind the mixing.Oral every day 3 times, be grown up each 2 or 2, each 1 or 1 of children (4～8 years old).
B. be used to mend the anticancer crowd of selenium: making weight is 0.5 gram, and selenium content is the preparation of tablet 25～35 μ g Se/ sheets or capsule 25～35 μ g Se/ grains; Wherein contain selenium rich of egg white powder 40～65%; Starch 10%～50%; Sodium carboxymethylcellulose 0%～15%; Sodium Benzoate 0%～1%; Na
2SeO
30.004～0.0065%, compressing tablet or filled capsules behind the mixing.Oral every day 3 times, be grown up each 2 or 2.
Use the selenium-rich amino acid preparation and have the food of mending the selenium function
A. be used for normal population and mend selenium: get selenium-rich amino acid solution, add sodium carboxymethylcellulose 1～5 μ g in every milliliter of selenium-rich amino acid solution, peppermint (flavor enhancement) 0.5～2 μ g, granulated sugar (flavor enhancement) 1～10 μ g, acetic acid (flavor enhancement) 1～5 μ g, it is 7.5～15 μ g Se/ bottles that selenium content is made in the bottling of sterilization back, the oral liquid of 15mL/ bottle, oral every day 3 times, each 1 bottle.
B. get spray-dired selenium-rich amino acid powder, making weight is 0.5 gram, and selenium content is the preparation of tablet 4～8 μ g Se/ sheets or capsule 4～8 μ g Se/ grains; Wherein contain selenium-rich amino acid powder 40%～65%; Starch 10%～50%; Sodium carboxymethylcellulose 0%～15%; Sodium Benzoate 0%～1%, compressing tablet or filled capsules behind the mixing.Oral every day 3 times, be grown up each 2 or 2, each 1 or 1 of children (4～8 years old).
C. be used to mend the anticancer crowd of selenium: get selenium-rich amino acid solution, add Na in every milliliter of selenium-rich amino acid solution
2SeO
30.005～1mg adds sodium carboxymethylcellulose 1～5 μ g again, peppermint 0.5～2 μ g, and granulated sugar 1～10 μ g, acetic acid 1～5 μ g, it is 40～80 μ g Se/ bottles that selenium content is made in the bottling of sterilization back, the oral liquid of 15mL/ bottle, oral every day 3 times, each 1 bottle.
D. get spray-dired selenium-rich amino acid powder, making weight is that 0.5 gram, selenium content are the preparation of tablet 25～35 μ g Se/ sheets or capsule 25～35 μ g Se/ grains, wherein contains selenium-rich amino acid powder 40%～65%; Starch 10%～50%; Sodium carboxymethylcellulose 0%～15%; Sodium Benzoate 0%～1%; Na
2SeO
30.04%～0.0065%, compressing tablet or filled capsules behind the mixing.Oral every day 3 times, be grown up each 2 or 2.
The selenium rich of egg white matter is adopted trypsase and the papain preparation selenium-rich amino acid that is hydrolyzed.Behind the proteolysis, except existing with amino acid whose form, the form that can also hang down peptide (as two, tripeptides etc.) exists.Some low peptide can not only provide people's bulk-growth, grow required nutriment, and the effect that has diseases prevention simultaneously, regulates human physiological functions, and some then is crude protein or forms the unexistent special physiological properties of amino acid.
The Se content of product selenium-rich amino acid of the present invention is 1～2 μ g Se/mL; The amino acid sequencing result shows.Automatic amino acid analyzer records amino acid and consists of: isoleucine 5.2%, lysine 7.5%, leucine 9.2%, phenylalanine 5.9%, methionine 2.6%, threonine 5.4%, valine 5.4%, tryptophan 2.1%, tyrosinase 15 .7%, cysteine 7.1%, arginine 6.6%, aspartic acid 7.3%, serine 5.8%, proline-4 .0%, glycine 5.1%, glutamic acid 6.7%, histidine 1.7%, alanine 6.7%.
The antitumaous effect of selenium-rich amino acid
With prepared selenium-rich amino acid solution, by being condensed into the selenium-rich amino acid that the selenium concentration scope is 10～50 μ mol/L, join then and cultivate in the nutrient solution that human liver cancer cell SMMC-7721 is arranged (the final concentration scope of selenium is at 0.5～2.5 μ mol/L) the effect regular hour.Found that, this selenium-rich amino acid can reduce the survival rate of cell, and the inhibitory action of pair cell survival rate presents dose-effect and timeliness dependence, the selenium-rich amino acid effect HCC that is respectively 0.5,1.5 and 2.5 μ mol/L as selenium concentration after 72 hours the survival rate to HCC be respectively 74.1%, 59% and 48.5%, selenium concentration is the selenium-rich amino acid function cells of 2.5 μ md/L after 24,48 and 72 hours, and the survival rate of cell is respectively 69.5%, 66.1% and 59.1%; But this selenium-rich amino acid is cell death inducing also, conspicuousness increases apoptosis rate with the increase of selenium concentration, present dose dependent, the selenium-rich amino acid effect HCC that is respectively 0.5,1.5 and 2.5 μ mol/L as selenium concentration is after 72 hours, and apoptosis rate is respectively 9.40%, 17.60% and 52.16%.
The content of selenium is 10～20mg Se/kg protein in the prepared selenium rich of egg white matter of the present invention, is 20～200 times of common silkworm chrysalis protein Se content, wherein contains the selenium material and is mainly selenoprotein, contains the selenium polypeptide, contains selenoaminoacid.The technological process of being adopted is simple, cost of material is low, higher to the less demanding of temperature and pressure and Protein Extraction productive rate.
Advantage of the present invention is: rich selenium silkworm chrysalis is prepared into protein and the amino acid that is rich in selenium, can be prepared into tablet, capsule and oral liquid, in additional essential amino acid ground while Selenium Supplement, make it have nutrition, health care concurrently.The function of prepared selenium-rich amino acid is greater than common abundant amino acids from silkworm pupa.The different dosage form of making can satisfy various age brackets and various health status crowds' needs.
The specific embodiment
The preparation of embodiment 1 selenium rich of egg white matter
The bright silkworm chrysalis of the rich selenium of 100g is rinsed well, naturally dry to eighty per cant and do, pulverize with pulverizer, with 300mL benzinum extracting degreasing, obtain the degreasing silkworm chrysalis, add 1% NaOH 360mL then, in 30 ℃ of stirring and dissolving silkworm chrysalis proteins 10 hours, after the woven dacron filtration, residue washs with low amounts of water, collects filtrate.Filtrate is decoloured with the 0.5g activated carbon and 5h is handled in deodorizing, uses 6mol.L after the filtration again
-1It is 4.5 that HCl regulates filtrate pH, and in 4 ℃ of standing over night, next day, protein was separated out, with centrifuge in 4000 rev/mins centrifugal, the precipitation freeze drying promptly gets the selenium rich of egg white matter.The quality testing result: protein yields is 45.3% in the dried pupa, the Se content in the protein is 13.5mg Se/kg protein.
The preparation of embodiment 2 selenium rich of egg white matters
The bright silkworm chrysalis of the rich selenium of 100g is rinsed well, oven dry to eighty per cant is done, pulverize with pulverizer, with 300mL benzinum extracting degreasing, obtain the degreasing silkworm chrysalis, add 2.5% NaOH 300mL then, in 30 ℃ of stirring and dissolving silkworm chrysalis proteins 10 hours, after the woven dacron filtration, residue washs with low amounts of water, collects filtrate.Filtrate is decoloured with the 0.8g activated carbon and 5h is handled in deodorizing, uses 6mol.L after the filtration again
-1It is 4.5 that HCl regulates filtrate pH, and in 4 ℃ of standing over night, next day, protein was separated out, with centrifuge in 4000 rev/mins centrifugal, the precipitation freeze drying promptly gets the selenium rich of egg white matter.The quality testing result: protein yields is 48.5% in the dried pupa, the Se content in the protein is 15.0mg Se/kg protein.
The preparation of embodiment 3 selenium-rich amino acids
Get 10g selenium rich of egg white matter powder, add that 120mL is water-soluble to be separated, add trypsase 0.1g and papain 0.2g more simultaneously, in 30 ℃, hydrolysis 10 hours under stirring condition.In 2500 rev/mins of centrifugal filtrations, residue adopts above-mentioned same method to be hydrolyzed with centrifuge.Repeat twice of said process and all dissolve to the selenium rich of egg white matter, promptly get selenium-rich amino acid solution, wherein Se content is 1.17 μ g Se/mL.Spray-drying (≤60 ℃) can get powder of amino acids.
The preparation of embodiment 4 selenium-rich amino acids
Get 10g selenium rich of egg white matter powder, add that 120mL is water-soluble to be separated, add trypsase 0.125g and papain 0.175g more simultaneously, in 40 ℃, hydrolysis 10 hours under stirring condition.In 3500 rev/mins of centrifugal filtrations, residue adopts above-mentioned same method to be hydrolyzed with centrifuge.Repeat twice of said process and all dissolve to the selenium rich of egg white matter, promptly get selenium-rich amino acid solution, wherein Se content is 1.52 μ g Se/mL.Spray-drying (≤60 ℃) can get powder of amino acids.
The preparation of the various formulations of embodiment 5 selenium-enriched proteins is used for normal population and mends selenium
Adopt method for preparing selenium rich of egg white matter powder, making weight is that 0.5 gram, selenium content are the preparation of tablet 5 μ g Se/ sheets or capsule 5 μ g Se/ grains; Wherein contain selenium rich of egg white matter 64.5%; Starch 30%; Sodium carboxymethylcellulose 5%; Sodium Benzoate 0.5%, compressing tablet or filled capsules behind the mixing.Oral every day 3 times, be grown up each 2 or 2, each 1 or 1 of children (4～8 years old).
The preparation of the various formulations of embodiment 6 selenium-enriched proteins is used to mend the anticancer crowd of selenium
Adopt the selenium rich of egg white matter powder of method for preparing, making weight is that 0.5 gram, selenium content are the preparation of tablet 30 μ g Se/ sheets or capsule 30 μ g Se/ grains; Wherein contain selenium rich of egg white matter powder 64.5%; Starch 30%; Sodium carboxymethylcellulose 5%; Sodium Benzoate 0.5%; Na
2SeO
30.006%, compressing tablet or filled capsules behind the mixing.Oral every day 3 times, be grown up each 2 or 2.
The preparation of the various formulations of embodiment 7 selenium-rich amino acids is used for normal population and mends selenium
Get selenium-rich amino acid solution, add sodium carboxymethylcellulose 3.5 μ g/mL, peppermint 1 μ g/mL, granulated sugar 5 μ g/mL, acetic acid 2 μ g/mL, the bottling of sterilization back is made selenium content and is about 10 μ g Se/ bottles, the oral liquid of 15mL/ bottle.Oral every day 3 times, each 1 bottle.
Get spray-dired selenium-rich amino acid powder, making weight is that 0.5 gram, selenium content are the preparation of tablet 5 μ g Se/ sheets or capsule 5 μ g Se/ grains; Wherein contain selenium-rich amino acid powder 64.5%; Starch 30%; Sodium carboxymethylcellulose 5%; Sodium Benzoate 0.5%, compressing tablet or filled capsules behind the mixing.Oral every day 3 times, be grown up each 2 or 2, each 1 or 1 of children (4～8 years old).
The preparation of the various formulations of embodiment 8 selenium-rich amino acids is used to mend the anticancer crowd of selenium
Get selenium-rich amino acid solution, add Na
2SeO
30.007mg/mL, add sodium carboxymethylcellulose 3.5 μ g/mL again, peppermint 1 μ g/mL, granulated sugar 5 μ g/mL, acetic acid 2 μ g/mL, the bottling of sterilization back is made selenium content and is about 60 μ g Se/ bottles, the oral liquid of 15mL/ bottle.Oral every day 3 times, each 1 bottle.
Get spray-dired selenium-rich amino acid powder, making weight is that 0.5 gram, selenium content are the preparation of tablet 30 μ g Se/ sheets or capsule 30 μ g Se/ grains; Wherein contain selenium-rich amino acid powder 64.5%; Starch 30%; Sodium carboxymethylcellulose 5%; Sodium Benzoate 0.5%; Na
2SeO
30.006%, compressing tablet or filled capsules behind the mixing.Oral every day 3 times, be grown up each 2 or 2.
Claims (8)
1. one kind is that the rich selenium of 1～5mg Se/kg bright silkworm chrysalis is a feedstock production with Se content, the content of selenium is the selenium rich of egg white matter of 10～20mg Se/kg, this selenium rich of egg white matter prepares with following method, the steps include: 1. to be that the bright dried silkworm chrysalis to eighty per cant of the rich selenium of 1～5mg Se/kg is done the back pulverizing with Se content, carry out the Soxhlet extracting with benzinum, the ratio of dried pupa and benzinum is 1g: 10～12mL;
2. add 25～40 ℃ of stirring and dissolving silkworm chrysalis proteins of 0.25～5% sodium hydroxide solution and carried out the protein extracting in 8～12 hours, the ratio of the sodium hydroxide solution of degreasing silkworm chrysalis and this concentration range is 1g: 10～15mL; Filter with woven dacron then, collect filtrate;
3. above-mentioned filtrate is decoloured with activated carbon and deodorizing was handled 4～8 hours, and the part by weight of protein and activated carbon is 1: 0.02～0.1;
4. regulating above-mentioned filtrate pH with 6mol/L HCl is 3～5,4 ℃ of standing over night, and next day, protein was separated out, and it is 10～20mg Se/kg selenium rich of egg white matter powder that centrifugal, precipitation freeze drying promptly gets Se content.
2. the described selenium rich of egg white matter of claim 1 has the Application in Food of mending the selenium function in preparation.
3. the described selenium rich of egg white matter of claim 1 has the Application in Food of pre-anti-cancer function in preparation.
4. one kind is feedstock production with claim 1 described selenium rich of egg white matter, and Se content is the selenium-rich amino acid of 1～2 μ g Se/mL, and this selenium-rich amino acid prepares with following method, the steps include:
1. the selenium rich of egg white matter that is dissolved in water powder, the weight ratio of selenium rich of egg white matter and water is 1: 10～15;
2. in this solution, add trypsase and papain simultaneously; The weight ratio of trypsase, papain and selenium rich of egg white matter is 0.5～1.5: 1.5～2.5: 100, and hydrolysis is 8～12 hours under 25～45 ℃ of stirring condition, and the pH of enzyme digestion reaction liquid is 6～8;
3. 1. centrifugal filtration, residue are adopted again and 2. same method is hydrolyzed;
Repeat said process and all dissolve, promptly get Se content 1～2mg Se/mL selenium-rich amino acid solution until the selenium rich of egg white matter.
5. the described selenium-rich amino acid of claim 4 has the Application in Food of mending the selenium function in preparation.
6. the described selenium-rich amino acid of claim 4 has the Application in Food of pre-anti-cancer function in preparation.
7. the described selenium-rich amino acid of claim 4, the spray-dried selenium-rich amino acid powder of making have the Application in Food of mending the selenium function in preparation.
8. the described selenium-rich amino acid of claim 4, the spray-dried selenium-rich amino acid powder of making has the Application in Food of pre-anti-cancer function in preparation.
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| CN1299603C (en) * | 2005-07-01 | 2007-02-14 | 浙江大学 | Glycosyl grain protein-selenium compound and production thereof |
| CN103418184A (en) * | 2012-05-15 | 2013-12-04 | 中国人民解放军第一八四医院 | Filtering method for medicinal oral liquid preparations |
| JP7093556B2 (en) * | 2016-06-07 | 2022-06-30 | 国立大学法人愛媛大学 | Method for producing the composition |
| CN106755236A (en) * | 2016-12-22 | 2017-05-31 | 山东明鑫集团有限公司 | A kind of preparation method of decolouring silkworm separated protein powder |
| CN106636276A (en) * | 2016-12-22 | 2017-05-10 | 山东明鑫集团有限公司 | Method for preparing silkworm pupa isolated protein powder modified by zirconium sulfate |
| CN106755235A (en) * | 2016-12-22 | 2017-05-31 | 山东明鑫集团有限公司 | A kind of preparation method of pupa albumen Gly-His-Lys |
| CN106666755A (en) * | 2016-12-22 | 2017-05-17 | 山东明鑫集团有限公司 | Preparation method of silkworm chrysalis compound protein peptide oral liquid |
| CN111763701A (en) * | 2020-07-16 | 2020-10-13 | 陕西科技大学 | Method for extracting organic selenium from natural selenium-rich agricultural products step by step |
| CN114271372B (en) * | 2021-09-05 | 2024-04-02 | 江苏中农科食品工程股份有限公司 | Preparation method of plant selenoprotein product with hyaluronic acid as carrier |
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