Production method of edible silkworm protein powder

Abstract

The invention discloses a production method for edible silkworm pupa protein powder, comprising the steps as follows: wet and dry fresh silkworm pupa, tussah pupa or eri-silkworm pupa are crushed, separated, flayed, dissolved in alkali solution, separated and degreased; a ceramic film is used to recover NaOH and separate protein concentrate solution; furthermore, hydrogen peroxide or ozone is added in the separated protein solution to carry out the decoloring and deodorization operation; protein is separated centrifugally after isoelectric points are adjusted; furthermore, the separated protein is embathed by ethanol so as to carry out the further operations of degreasing, decoloring and deodorizing; subsequently, the deodorizing and ethanol removing are carried out by drying in vacuum and the protein is crushed ultra-finely so as to prepare the light-yellow-white low-fat edible silkworm pupa protein powder without pupa smell and salt. The method has good effects on decoloring, deodorizing and desalting, the prepared product has high quality, the amino acid composition is balanced, the content of the protein reaches more than 90%, the content of the fat is less than 2%, the ash content is less than 3%, the safety performance of the product is good, and the edible silkworm pupa protein powder can be applied to the industries such as medicament, foods and the like. The process can be used for producing the edible silkworm pupa protein powder with the advantages of low comprehensive cost and recyclable produced auxiliary material.

Description

Technical field [0001] The invention belongs to the technical field of production technology of silkworm pupa protein. Background technique [0002] China is a large sericulture country, with an annual output of 650,000 tons of silkworm cocoons, accounting for 70% of the world’s total cocoons. Among them, the output of fresh silkworm pupae can reach 500,000 tons. Silkworm pupae have extremely high nutritional value and are rich in protein (fresh silkworm pupa contains crude cocoons). Protein accounts for 51%), fatty acids (crude fat accounts for 29%), vitamins (including vitamin A, vitamin B2, vitamin D and ergosterol, etc.). The protein content of silkworm pupae is more than 50%, which is much higher than that of general food. There are a complete range of essential amino acids in the silkworm pupa protein. The protein of silkworm pupa is composed of 18 kinds of amino acids. The content of 8 kinds of amino acids necessary for human body is about 2 times that of pork, 4 times tha...

AI Technical Summary

Problems solved by technology

[0003] Fresh silkworm chrysalis has high fat content and has an unpleasant stench. Therefore, in order to produce high-quality silkworm chrysalis protein that meets food-grade standards, it is necessary to solve the problems of decolorization, deodorization, degreasing, and desalination in the production process. For a long time, extensive research The authors and producers have carried out useful explorations, but there are the following problems in the production process that has been announced at present: 1. The product quality is poor: as raw material production of food-grade silkworm chrysalis protein powder with defatted silkworm chrysalis, the problem of degreasing has not been completely solved. In addition, No. 6 solvent oil is used, and there will inevitably be residues in the defatted silkworm chrysalis. At the same time, because the silkworm chrysalis are rarely treated with impurities before degreasing, or some have deteriorated due to long storage time, there are many impurities in the defatted silkworm chrysalis, dead silkworms and dead chrysalis Many, there are many spoiled chrysalis, so the silkworm chrysalis protein powder produced with it as raw material is of poor quality; 2, output is limited

There is an invention claiming to produce silkworm chrysalis protein powder by means of supercritical extraction. This method requires large investment and small production capacity, and cannot form industrialized production; 3. The sensory indicators of the product are poor

If some only use hydrogen peroxide or ozone for decolorization and deodorization, and some only use organic solvents for degreasing and deodorizing, because there is no comprehensive degreasing, deodorizing and decolorizing method, the effect is not ideal