Light-yellow odourless degreasing silkworm pupa protein power and preparation method thereof

A technology of silkworm chrysalis protein powder and silkworm chrysalis protein, which is applied in the field of silkworm chrysalis protein powder, can solve the problems of unfavorable green and clean production of silkworm chrysalis protein products, unsatisfactory decolorization effect, and large loss of silkworm chrysalis protein, and achieve good deodorization and decolorization effect, good adsorption exchange Capacity, not easy to damage the effect of degreasing rate

Inactive Publication Date: 2015-12-09
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, although the oxidative oxidation bleaching method and the protein modification method have strong decolorization effects and can be decolorized to white, the process is complicated and the cost is high.
The activated carbon adsorption decolorization process is simple, but the decolorization effect is not ideal, and the protein loss of silkworm chrysalis is relatively large
[0005] In the current reports on the refining of silkworm chrysalis protein, high temperature and long-term solvent extraction is mostly used to obtain a higher degreasing rate. The degreasing solvent used is highly toxic and has a high residue in the protein; Thoroughness, serious loss of protein, destruction of protein structure, excessive degradation and deterioration of protein processing properties (such as foaming, solubility, etc.)
Generally speaking, the existing methods of deodorization, decolorization and degreasing are not ideal. The current refining process of silkworm chrysalis protein has problems such as high energy consumption, high pollution, complicated process and poor product safety to a certain extent, which is not conducive to silkworm chrysalis protein products. green and clean production

Method used

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  • Light-yellow odourless degreasing silkworm pupa protein power and preparation method thereof
  • Light-yellow odourless degreasing silkworm pupa protein power and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A light yellow, odorless, defatted silkworm chrysalis protein powder and a preparation method thereof. The concrete steps of described preparation method are:

[0032] Step 1. Silkworm chrysalis pretreatment

[0033] Remove the pupal skin and glands of the silkworm pupae, soak them in dilute hydrochloric acid for 30 minutes, wash them with water until the pH is neutral, and obtain the wet pupae; then dry the pupae at 60°C and crush them to a particle size of 260 μm, to obtain coarse silkworm chrysalis powder.

[0034] Step 2, preparation of defatted crude pupa protein powder

[0035] Add 1 part of crude silkworm chrysalis powder to 11 parts of degreasing solvent, stir for 2-5 minutes, and perform ultrasonic degreasing treatment at 40°C for 27 minutes; then centrifuge at 10000r / min to obtain degreasing liquid and defatted crude pupa protein; Then, the defatted crude pupae protein was dried at 60° C. and crushed to a particle size of 260 μm to obtain defatted crude pup...

Embodiment 2

[0047] A light yellow, odorless, defatted silkworm chrysalis protein powder and a preparation method thereof. The concrete steps of described preparation method are:

[0048] Step 1. Silkworm chrysalis pretreatment

[0049] Remove the pupal skin and glands of silkworm pupae, soak them in dilute hydrochloric acid for 15-35 minutes, wash them with water until the pH is neutral, and obtain the wet pupae; then dry the pupae at 50-60°C and crush them When the particle size is 200-260 μm, thick silkworm chrysalis powder is obtained.

[0050] Step 2, preparation of defatted crude pupae protein powder

[0051] Add 1 part of coarse silkworm chrysalis powder to 8-12 parts of degreasing solvent, stir for 2-5 minutes, and perform ultrasonic degreasing treatment at 35-42°C for 15-35 minutes; then centrifuge at 8000-12000r / min to obtain Degreasing liquid and defatted crude pupae protein; then drying the defatted crude pupae protein at 50-60°C and crushing to a particle size of 200-260 μm...

Embodiment 3

[0063] A light yellow, odorless, defatted silkworm chrysalis protein powder and a preparation method thereof. The concrete steps of described preparation method are:

[0064] Step 1. Silkworm chrysalis pretreatment

[0065] Remove the pupal skin and glands of the reeled silkworm pupae, soak them in dilute hydrochloric acid for 25-45 minutes, wash with water until the pH is neutral, and obtain the wet pupae; then dry the pupae at 60-70°C and crush When the particle size is 240-300 μm, thick silkworm chrysalis powder is obtained.

[0066] Step 2, preparation of defatted crude pupae protein powder

[0067] Add 1 part of coarse silkworm chrysalis powder to 10-15 parts of degreasing solvent, stir for 2-5 minutes, and perform ultrasonic degreasing treatment at 38-45°C for 25-45 minutes; then centrifuge at 8000-12000r / min to obtain Degreasing liquid and defatted crude pupae protein; then drying the defatted crude pupae protein at 60-70°C and crushing to a particle size of 240-300 ...

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Abstract

The invention relates to light-yellow odourless degreasing silkworm pupa protein power and a preparation method thereof. According to the technical scheme, silk reeling silkworm pupae of which the skin and the gland are removed are selected as the raw material, silkworm pupa pretreatment is conducted, and coarse silkworm pupa powder is obtained; the coarse silkworm pupa powder is evenly mixed in degreasing solvent, ultrasonic degreasing treatment is conducted, centrifugal separation is conducted, and degreasing fluid and degreasing coarse pupa protein are obtained; drying and smashing are conducted on the degreasing coarse pupa protein, and the degreasing coarse pupa protein power is obtained; the degreasing coarse pupa protein power is evenly mixed in a sodium hydroxide solution, a silkworm pupa protein extracting solution is obtained, ultrasonic extraction treatment is conducted, macroporous resin is added into the silkworm pupa protein extracting solution, adsorption treatment is conducted, solid-liquid separation is conducted, resin and protein fluid are obtained, the protein fluid pH is adjusted, protein precipitation is collected, and wet silkworm pupa protein is obtained; vacuum drying and smashing are conducted on the wet silkworm pupa protein, and the light-yellow odourless degreasing silkworm pupa protein power is obtained. The light-yellow odourless degreasing silkworm pupa protein power and the preparation method thereof have the advantages that the technology is simple, the degreasing efficiency is high, effects of deodorization and decolorization are good, the treatment is low in temperature and short in time, the cost is low, the green and environmental protection is achieved, and the light-yellow odourless degreasing silkworm pupa protein power and the preparation method thereof can be used for industrial production.

Description

technical field [0001] The invention belongs to the technical field of silkworm chrysalis protein powder. Specifically relates to a light yellow odorless degreasing silkworm chrysalis protein powder and a preparation method thereof. Background technique [0002] Silkworm chrysalis is a large by-product of the silk reeling industry. It is not only a traditional Chinese medicinal material with the same origin as the medicinal diet, but also a natural insect protein resource with great potential. China is very rich in silkworm chrysalis resources, with an annual output of more than 700,000 tons of silkworm chrysalis. However, due to the lack of corresponding silkworm chrysalis deep processing technology in our country, most of the silkworm chrysalis are basically used as feed and fertilizer. Not only the resource utilization rate is low, but also the livestock, Poultry, fish and other meat have pupae smell, which seriously affects the quality of related products. [0003] Sil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J1/00
Inventor 左振宇李凌凌侯亚利张美玲王家怡
Owner WUHAN UNIV OF SCI & TECH
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