Goat milk degreasing method suitable for goat milk protein fibers

Abstract

The invention discloses a goat milk degreasing method suitable for goat milk protein fibers, and solves the problem of high fat residue in goat milk degreasing in the prior art. The method comprises the following steps: step 1, taking goat milk, adding a nonionic surfactant, stirring, and standing to remove an upper-layer substance, so as to obtain a solution A; 2, adding ethanol into the solution A in the step 1, wherein the mass ratio of the added ethanol to the solution A is 5%-60%, discarding an upper layer substance after heat preservation, and obtaining a solution B; and step 3, heating the solution B obtained in the step 2 to boiling, removing upper-layer substances, filtering and drying to obtain the goat milk protein. The mass ratio of the nonionic surfactant added in the step 1 to the goat milk is 2%-10%; and the nonionic surfactant added in the step 1 is one or more of dodecyl diethanolamide, polyoxyethylene fatty alcohol ether, polyoxyethylene alkylphenol ether and dodecyl alcohol amide phosphate. The method has the advantages of effectively controlling the amount of residual fat and the like.

Description

technical field [0001] The invention relates to a protein fiber, in particular to a goat milk defatting method suitable for the goat milk protein fiber. Background technique [0002] Goat milk proteins are mainly casein and whey proteins. The ratio of casein to whey protein in goat milk, cow milk and human milk is roughly 75:25 in goat milk, 85:15 in cow milk, and 60:40 in human milk. It can be seen that the content of goat milk is lower than that of cow's casein, and the content of whey protein is higher, which is close to that of human milk. Under the action of gastric acid, casein can form larger coagulums, the higher the content, the lower the protein digestion, so the digestibility of goat milk protein is higher than that of cow milk. The mineral content of goat milk is 0.86%, which is 0.14% higher than cow's milk. Goat's milk contains more elements than cow's milk, mainly calcium, phosphorus, potassium, magnesium, chlorine and manganese, etc. It is a high-quality pr...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in the prior art, the fat residue of goat milk degreasing is relatively high, and the degreasing effect is poor. The present invention provides a goat milk degreasing method suitable for goat milk protein fiber to solve the above problems