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Novel method for preparing selenate food protein

A technology for selenium acidification and food, applied in protein food processing, protein food ingredients, food science and other directions, can solve the problems of using toxic gases or organic solvents, unfavorable industrial production, increasing production costs, etc., to achieve low prices and avoid food safety. Problems, the effect of low production costs

Inactive Publication Date: 2010-06-02
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, a high-pressure reaction vessel needs to be used in the reaction, and an anti-corrosion coating needs to be applied to the inner wall of the reaction kettle, which will increase the production cost and is not conducive to industrialization
[0005] In short, in the current preparation process of selenated protein, there are cases of using toxic gases or organic solvents, and selenated protein is mainly used in food, health food or medicine, such residual reagents may affect its application
In addition, these preparation methods have harsh reaction conditions and complicated processes, which are not conducive to industrial production.

Method used

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  • Novel method for preparing selenate food protein
  • Novel method for preparing selenate food protein

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Dissolve 0.5g of egg egg white protein in 50mL of distilled water, stir for 30-60min, add 0.65g of sodium selenite to the protein solution; adjust the pH and freeze-dry the protein-selenite solution, then dry at 80℃ The selenium acidification reaction was carried out under heating for 1 day; after the reaction, the egg white protein-selenite was dissolved in water and dialyzed in water for 2 days to remove unreacted selenite, and finally freeze-dried to obtain selenium acidified egg white protein. The obtained selenate protein was analyzed by infrared spectroscopy (IR), and the result was -1 The stretching vibration absorption peak of Se=O can be observed at the place; in addition, the analysis result of polyacrylamide gel electrophoresis (Native PAGE) shows that the moving speed of selenium acidified egg albumin is faster than that of the control egg albumin, which indicates that selenium Acidification increases the negative charge of the protein. Through measurement, ...

Embodiment 2

[0026] Dissolve 1g of egg egg white protein in 80mL of distilled water, stir for 30-60min, add 1.5g of sodium selenite to the protein solution; adjust the pH and freeze-dry the protein-selenite solution, then dry and heat at 80℃ The selenium acidification reaction was carried out for 2 days under the conditions of selenium acidification; after the reaction, the egg white protein-selenite was dissolved in water and dialyzed in water for 2 days to remove unreacted selenite, and finally freeze-dried to obtain selenium acidified egg white protein . The resultant selenium acidified protein was analyzed by IR and found that -1 The stretching vibration absorption peak of Se=O can be observed at the place; in addition, the analysis result of polyacrylamide gel electrophoresis (Native PAGE) shows that the moving speed of selenium acidified egg albumin is faster than that of the control egg albumin, which indicates that selenium Acidification increases the negative charge of the protein....

Embodiment 3

[0028] Dissolve 0.5g of egg egg white protein in 50mL of distilled water, stir for 30-60min, add 0.65g of sodium selenite to the protein solution; adjust the pH and freeze-dry the protein-selenite solution, then dry at 70℃ Carry out the selenium acidification reaction under heating for 2 days; after the reaction, dissolve the egg white protein-selenite in water and dialyze in water for 2 days to remove unreacted selenite, and finally freeze-dry to obtain selenium casein . The resultant selenium acidified protein was analyzed by IR and found that -1 The stretching vibration absorption peak of Se=O can be observed at the place; in addition, the analysis result of polyacrylamide gel electrophoresis (Native PAGE) shows that the moving speed of selenium acidified egg albumin is faster than that of the control egg albumin, which indicates that selenium Acidification increases the negative charge of the protein. Through determination, the selenium content of selenium acidified egg eg...

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Abstract

The invention discloses a novel method for preparing selenate food protein, comprising the following steps of: dissolving food protein into solution containing selenate; adjusting the pH and then freezing and drying; heating the freezed and dried selenate-food protein mixture for 1-5 days under the condition of drying to perform selenate reaction; dialyzing, freezing and drying to obtain the selenate food protein; and the like. The invention has the advantages of safe selenate products and avoidance of environmental pollution due to no use of organic solvent during preparation; and simple process, controllable conditions, low production cost and easy realization of industrial production. The selenate food protein in the invention can be used as organic selenium supplement with high efficiency, low mammalian toxicity to be applied to food, health products or feed and can provide selenium element necessary to human bodies or animals. In addition, selenate food protein has immunity adjusting function and good oxidation resistance and antitumor activity, and has profound significance in developing anticancer drugs or cosmetic.

Description

Technical field [0001] The present invention relates to a new method for preparing selenium acidified food protein without using organic solvent. Background technique [0002] Selenium has been recognized by the United Nations Health Organization as an important trace element necessary for the human body. Studies have shown that many diseases, such as Keshan disease, diabetes, cardiovascular disease, cataracts, aging, etc., are related to selenium deficiency in the body. For many years, a large number of studies have been conducted on the biological functions of selenium at home and abroad, especially the relationship between selenium and tumors. Relationship, the research of selenium from nutritional function to drug treatment has become a very active field in selenium chemistry. In addition, selenium is an effective antioxidant, which can scavenge free radicals and reduce serum total cholesterol, triglycerides and lipid peroxides. At the same time, selenium also regulates the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J3/00
Inventor 李灿鹏沙勐赵卉成伟华朱光辉
Owner YUNNAN UNIV
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