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Method for preparing soybean protein powder for wood industry by using high-temperature soybean meal

A soybean protein powder, industrial technology, applied in the preparation of protein adhesive, animal glue or gelatin, adhesive type and other directions, can solve the problem of low NSI of soybean protein, achieve high NSI value, high corrosion resistance, The effect of a short dissolution time

Active Publication Date: 2020-02-07
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The soybean protein obtained by this method has an NSI (Nitrogen Solubility Index) of about 75, although it is higher than the soybean protein in the market, it still cannot effectively solve the problem of low soybean protein NSI

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Soybean meal soaking treatment: 250g of high-temperature soybean meal is added to the soaking solution composed of 100 parts by weight of water, 0.1 part of sodium hydroxide, 1 part of water glass, 2 parts of borax and 0.1 part of sodium sulfite. The ratio is 1:3, the temperature is 30°C, stirred for 1 hour, and the rotation speed is 120r / min.

[0021] (2) Wet ultrafine pulverization: the mixture obtained in (1) is pulverized by a wet ultrafine pulverizer at a discharge temperature of ≤60° C. to obtain a soybean meal solution, and the pH is adjusted to 8.

[0022] (3) Vacuum low-temperature drying: the soybean meal solution is dried with a vacuum low-temperature dryer at a temperature of 55° C. and a discharge moisture content of 10% to obtain soybean protein powder for the wood industry.

Embodiment 2

[0024] (1) Soybean meal soaking treatment: 250g of high-temperature soybean meal is added to the soaking solution composed of 100 parts by weight of water, 0.2 part of sodium hydroxide, 2 parts of water glass, 4 parts of borax and 0.2 part of sodium sulfite. The ratio is 1:4, the temperature is 40°C, stirred for 2 hours, and the rotation speed is 120r / min.

[0025] (2) Wet ultrafine pulverization: the mixture obtained in (1) is pulverized by a wet ultrafine pulverizer, and the discharge temperature is ≤60° C. to obtain a soybean solution, and the pH is adjusted to 8.

[0026] (3) Vacuum low-temperature drying: the soybean meal solution is dried with a vacuum low-temperature dryer at a temperature of 55° C. and a moisture content of the output is 11%, to obtain soybean protein powder for the wood industry.

[0027] The soybean protein powder prepared in each embodiment and comparative example was tested and compared with the soybean protein powder in the market, and the results...

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Abstract

The invention discloses a method for preparing soybean protein powder for wood industry by using high-temperature soybean meal. According to the method, firstly, the high-temperature soybean meal is subjected to alkaline water immersion, then soybean meal immersion liquid is put into a superfine crusher for crushing to obtain a soybean meal dissolving liquid, and finally the soybean meal dissolving liquid is subjected to vacuum low-temperature drying. The soybean protein powder prepared from the high-temperature soybean meal is high in water solubility, the NSI value exceeds 90, and the soybean protein powder is short in water dissolution time and high in corrosion resistance and is suitable for wood industry.

Description

technical field [0001] The invention belongs to the technical field of preparation of wood industry adhesives, and relates to a method for preparing soybean protein powder for wood industry by using high-temperature soybean meal. Background technique [0002] In the existing market, the high-temperature soybean meal of transgenic soybeans is mostly used, and the soybean meal is mainly used to produce animal feed. The main reason is that during the production process of soybean meal, the protein deforms severely at high temperature, and the NSI value of the protein after crushing is small, and the viscosity is low. In the industrial field, especially the wood industry adhesive industry is of little use. [0003] Chinese patent CN101637215B discloses a soybean protein processing method and its products. The processing method first extracts and separates crushed soybean meal to obtain protein solution and bean dregs, then acid-precipitates the protein solution to obtain protein...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C08H1/00
CPCC08H1/00C09J189/00
Inventor 高瞩俞马宏蒋梦琪赵志仁
Owner NANJING UNIV OF SCI & TECH