Process for preparing chicken liver hydrolyzed protein with proteases

Abstract

The invention provides a process for preparing chicken liver hydrolyzed protein with proteases, aiming at solving the problems that the chicken liver has heavy fishy smell and high content of cholesterol and hereby has low utilization rate. The influence of the raw material processing method, the proteolysis temperature, the pH value, the protease dosage (E / S), the substrate concentration and theproteolysis time to the hydrolysis capacity of all the proteases is investigated and the proteolysis effect of all the proteases under the optimum condition is compared in the single factor experiment by using the chicken liver as the raw material, selecting 5 proteases and taking the hydrolysis degree as the index. The high proteolysis products with optimum hydrolysis effect and flavor are obtained by optimizing the compound dual-protease proteolysis condition. The chicken liver hydrolyzed protein is prepared through proteolysis, and the main components of the chicken liver hydrolyzed protein are amino acid and small molecule peptide which have no bitter flavor. Detection shows that the chicken liver hydrolyzed protein contains no cholesterol and has some antioxidant activity.

Description

Technical field

[0001] The invention belongs to the technical field of preparation of hydrolyzed protein of chicken liver, and more specifically relates to a process method for preparing hydrolyzed protein of chicken liver by an enzymatic method. Background technique

[0002] According to the Foreign Agricultural Service (FAS) of the US Department of Agriculture, global chicken production reached nearly 71 million tons in 2008, and China's chicken production ranked second, reaching more than 10.15 million tons. Chicken liver is a nutrient-rich and widely available by-product, which accounts for 2.0% to 2.5% of each chicken's body weight. There are about 100,000 tons of chicken liver scraps in the country every year. Chicken liver is rich in nutrition, rich in protein, calcium, phosphorus, iron, zinc, vitamin A, and B vitamins. It has been used in food, feed and medicine. However, the existing chicken liver products are mostly processed by traditional methods. The products have ...

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