Method for preparing peanut protein special for fermentation by utilizing hot-pressed peanut meal

A hot-pressed peanut meal and peanut protein technology, applied in the field of food protein processing, can solve the problems of high fat and other impurities, low fermentation efficiency, and low protein content, and achieve high protein content, high biological potency, and good solubility Effect

Active Publication Date: 2013-11-13
HEBEI MEILIN DUOWEI GRAIN & OIL TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The product obtained by the direct superfine grinding method of peanut meal has low protein content and high fat and other impurities, which easily leads to low fermentation efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Peanut meal is crushed through a 100-mesh sieve, and 11.5 times its mass of petroleum ether with a boiling range of 30-60°C is added to the undersieve, and degreased in a constant temperature water bath oscillator at 52°C at 275r / min for 12h, and placed in a fume hood Degreased peanut meal powder was obtained from medium volatile petroleum ether. The mass-to-volume ratio of peanut meal powder to distilled water was 1:7.5 (g / ml) and distilled water was added. Under the conditions of microwave power 1000w and heating temperature 45°C, microwave heating for 2.0min and mixing Uniformly obtain a suspension of peanut meal powder, adjust the pH value of the suspension to 5.2, add Viscozyme L with 21.5 FBG per gram of peanut meal powder (FBG is the enzymatic activity unit of the compound plant hydrolytic enzyme Viscozyme L), and heat it under microwave power of 1000w and heating temperature Under the condition of 46.5°C, microwave assisted enzymatic hydrolysis for 7.5 minutes to...

Embodiment 2

[0016] Peanut meal is crushed through a 100-mesh sieve, and 12.2 times its mass of petroleum ether with a boiling range of 30-60°C is added to the undersieve, degreased in a 52°C constant temperature water bath shaker at 275r / min for 12h, and placed in a fume hood Degreased peanut meal powder was obtained from medium volatile petroleum ether. The mass-to-volume ratio of peanut meal powder to distilled water was 1:8.0 (g / ml) and distilled water was added. Under the conditions of microwave power 1000w and heating temperature 45°C, microwave heating for 2.0min and mixing Homogenize to obtain a suspension of peanut meal powder, adjust the pH value of the suspension to 5.0, add Viscozyme L with 23.8 FBG per gram of peanut meal powder (FBG is the enzymatic activity unit of the compound plant hydrolytic enzyme Viscozyme L), and heat it under microwave power of 1000w and heating temperature Under the condition of 48.0°C, microwave assisted enzymatic hydrolysis for 8.2 minutes to obtain...

Embodiment 3

[0018]Peanut meal is crushed through a 100-mesh sieve, and 10.9 times its mass of petroleum ether with a boiling range of 30-60°C is added to the under-sieve, and degreased in a 52°C constant temperature water bath shaker at 275r / min for 12h, in a fume hood The volatile petroleum ether is used to obtain the defatted peanut meal powder. The mass-to-volume ratio of peanut meal powder and distilled water is 1:7.0 (g / ml) and distilled water is added. Under the conditions of microwave power 1000w and heating temperature 45°C, microwave heating for 2.0min and mix. Uniformly obtain a suspension of peanut meal powder, adjust the pH value of the suspension to 5.5, add Viscozyme L with 24.6 FBG per gram of peanut meal powder (FBG is the enzymatic activity unit of the compound plant hydrolytic enzyme Viscozyme L), and heat it under microwave power of 1000w and heating temperature Under the condition of 49.3°C, microwave assisted enzymatic hydrolysis for 8.8 minutes to obtain Viscozyme L e...

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PUM

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Abstract

Te invention discloses a method for preparing peanut protein special for fermentation by utilizing hot-pressed peanut meal. The method comprises the following steps of: adding distilled water after crushing and degreasing peanut meal; adjusting the pH value; adding compound plant hydrolytic enzyme ViscozymeL and carrying out microwave auxiliary enzymolysis to obtain ViscozymeL enzymatic hydrolysate; adjusting the pH value, adding the compound protease, carrying out microwave auxiliary enzymolysis, deactivating enzyme, centrifuging, precipitating, freezing and drying to obtain the peanut protein special for fermentation. The peanut protein special for fermentation, which is prepared by the method, is high in protein content, good in solubility and high in biological value, can be used as a nitrogen source special for antibiotic fermentation, food brewing and microorganism cultivation, also can be directly used as the fermentation material for preparing the microorganism solid fermentation protein and plant protein feed, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for preparing peanut protein for fermentation by using hot-pressed peanut meal, and belongs to the field of food protein processing. Background technique [0002] Peanut is an important oil crop and economic crop in my country. At present, the processing and utilization of peanuts in my country is mainly oil extraction. About 50% to 60% of the peanuts in the country are used for oil extraction every year, and the hot pressing process is mostly used to extract peanut oil. The remaining cake after oil extraction is due to excessive protein denaturation. The nutritional value is reduced, usually as livestock feed and fertilizer, the added value of the product is low, and the waste of resources is serious. However, peanut meal contains rich protein resources and some insoluble peanut fiber components, which has high utilization value. Therefore, developing hot-pressed peanut protein products, enhancing the added value of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P21/06
Inventor 王云志王生雷
Owner HEBEI MEILIN DUOWEI GRAIN & OIL TRADE CO LTD
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