Selenoprotein extracted from selenium-rich cereals and selenium-rich brassica juncea and preparation method of selenoprotein

Abstract

The invention relates to selenoprotein extracted from selenium-rich cereals and selenium-rich brassica juncea. The selenoprotein comprises the following components in percentage by weight: 50%-99.9% of selenium-rich cereal proteins and 0.1%-50% of selenium-rich brassica juncea proteins. The invention also provides a method for preparing the selenoprotein. The method comprises the following steps of: preparing the selenium-rich cereal proteins; preparing the selenium-rich brassica juncea proteins; mixing the selenium-rich cereal proteins with the selenium-rich brassica juncea proteins in proportion. According to the selenoprotein disclosed by the invention, selenium-rich proteins of rice husks and selenoprotein of the selenium-rich brassica juncea are compounded, so that selenium-rich ricehusk resources are effectively utilized, the effect of intensifying selenium elements is achieved, not only can the shortcoming of low selenomethionine of the selenoprotein of the selenium-rich brassica juncea be overcome, but also the defect of the selenium-rich proteins of rice husks in the aspect of the selenocysteine can be eliminated, the biological effects of various selenoproteins containing the selenomethionine and selenocysteine mutually cooperate, and the requirements of modern people for multiple aspects of functional health-care products are met.

Description

technical field [0001] The invention belongs to the technical field of food deep processing, and in particular relates to a selenoprotein extracted from selenium-enriched grains and selenium-enriched wild rape and a preparation method thereof. Background technique [0002] Rice bran accounts for 5% to 8% of the mass of rice, but concentrates 64% of the nutrients of rice, including 15% to 23% fat, 14% to 16% protein, 25% to 40% dietary fiber, and a large amount of r-oryzanol (3.86~5.89mg / g), polyphenols (9.60~81.85mg GAE / g), vitamin E (0.32~0.44mg / g) and other physiologically active substances. The neutral oil and glycolipid contained in the fat in rice bran are 75.20% and 16.71% respectively, and the rest are phospholipids. High-nutrition rice bran oil can be extracted from rice bran, which contains more than 80% unsaturated fatty acids such as linoleic acid, rich in oryzanol, vitamins, phospholipids and phytosterols. [0003] The stabilization methods of rice bran are mai...

AI Technical Summary

Problems solved by technology

[0005] The 2013 patent CN201310287485.2 and the 2016 patent CN201610379221.3 use n-hexane to degrease rice bran. The commonly used leaching solvent - n-hexane has a stimulating effect on the brain nerves, and the production process is dangerous.

[0009] The 2014 patent CN 201410690328.0 "A method for enzymatically treating selenium-enriched rice to produce selenium-enriched protein powder" discloses the use of enzymes to prepare protein powder. Although the reaction conditions are relatively mild, the enzymes are easily inactivated and require high reaction conditions. , the extraction time is longer, and the process cost is also high

[0015] Among the main selenium-enriched products currently on the market, selenium-enriched vegetables have limited ability to absorb and enrich selenium, and are affected by environmental factors such as soil. Selenium-enriched yeast is similar to plants, and the organic selenium enriched is mainly selenium acid-based