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Method for extracting walnut health care grease by microbial fermentation method

A microbial fermentation method, walnut technology, applied in the direction of fermentation, fat production, fat oil/fat refining, etc., can solve the problems affecting the flavor and taste of walnut oil, oil oxidation, etc., to avoid oil oxidation and deterioration, ensure quality, and reduce high-temperature sterilization link effect

Inactive Publication Date: 2018-07-27
GUIYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The protein and cellulose in walnut kernels are degraded by enzymatic hydrolysis, but this method eventually needs to inactivate the enzyme, which is likely to cause oil oxidation and affect the flavor and taste of walnut oil

Method used

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  • Method for extracting walnut health care grease by microbial fermentation method

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Comparison scheme
Effect test

Embodiment 1

[0022] A method for extracting walnut health-care oil by microbial fermentation is characterized in that it comprises the following steps:

[0023] A. Pretreatment of walnut kernels: shelling walnuts to obtain walnut kernels, adding 1 part of walnut kernels by weight, adding 3 parts of pure water, beating with a high-speed beater, and mixing to obtain walnut kernel slurry;

[0024] B. Fermentation of walnut kernels with koji: heat the walnut kernel slurry to 25°C, put it into a ceramic jar, add high-efficiency koji for oxygen fermentation, the fermentation temperature is 25°C, and the amount of high-efficiency koji added is the weight of the walnut kernel slurry 0.3%, the fermentation time is 5 days, after the end of fermentation, an oil-water mixed fermentation liquid rich in walnut health-care oil is obtained;

[0025] C. Crushing and emulsification: Add the oil-water mixed fermentation liquid rich in walnut health-care oil into the ultrasonic cell breaker. The working condi...

Embodiment 2

[0030] A method for extracting walnut health-care oil by microbial fermentation is characterized in that it comprises the following steps:

[0031] A. Pretreatment of walnut kernels: shelling walnuts to obtain walnut kernels, adding 1 part of walnut kernels by weight, adding 4 parts of pure water, beating with a high-speed beater, and mixing to obtain walnut kernel slurry;

[0032] B. Fermentation of walnut kernels with koji: heat the walnut kernel slurry to 28°C, put it into a ceramic wine jar, add high-efficiency jijiu koji for oxygen fermentation, the fermentation temperature is 28°C, and the amount of high-efficiency jijijiu koji added is the weight of the walnut kernel slurry 0.4%, the fermentation time is 8 days, after the end of fermentation, an oil-water mixed fermentation liquid rich in walnut health-care oil is obtained;

[0033] C. Crushing and emulsification: Add the oil-water mixed fermentation liquid rich in walnut health-care oil into the ultrasonic cell breaker...

Embodiment 3

[0038] A method for extracting walnut health-care oil by microbial fermentation is characterized in that it comprises the following steps:

[0039] A. Pretreatment of walnut kernels: shelling walnuts to obtain walnut kernels, adding 1 part of walnut kernels by weight, adding 5 parts of pure water, beating with a high-speed beater, and mixing to obtain walnut kernel slurry;

[0040] B. Fermentation of walnut kernels with koji: heat the walnut kernel slurry to 30°C, put it into a ceramic jar, add high-efficiency koji for oxygen fermentation, the fermentation temperature is 30°C, and the amount of high-efficiency jijiu koji added is the weight of the walnut kernel slurry 0.5%, the fermentation time is 10 days, after the end of fermentation, an oil-water mixed fermentation liquid rich in walnut health-care oil is obtained;

[0041] C. Crushing and emulsification: Add the oil-water mixed fermentation liquid rich in walnut health-care oil into the ultrasonic cell breaker. The workin...

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Abstract

The invention discloses a method for extracting walnut health care grease by a microbial fermentation method. According to the method, ingredients such as protein and cellulose in the walnut kernels are decomposed by a microbial fermentation method; the goal of enriching the health care grease is finally achieved. After the water is added into the walnut kernels for pulping; yeast richly containing various microbes is added for fermentation, so that the protein in the walnut kernels is decomposed into amino acid; carbohydrate provides energy sources required by microbial fermentation; oil-water fermentation liquid richly containing the walnut health care grease is finally obtained; a cell crushing instrument is used for crushing and emulsification; then, through centrifugation filtering, walnut health care grease crude oil is obtained; then through refining, the walnut health care grease is obtained. The substances such as protein, sugar and cellulose in the walnut kernels are degradedby microbes; oil-water emulsion richly containing walnut health care grease is obtained; after the refining, the pure natural walnut health care grease which richly contains amino acid, has special flavor and does not have residue organic solvents can be obtained.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to a method for extracting walnut health-care oil through microbial fermentation. Background technique [0002] Walnut oil is a vegetable oil obtained by pressing walnut kernels as raw materials. Belongs to edible oil. The oil content of walnut is as high as 65%-70%, ranking first among all woody oil plants, and has the reputation of "oil depot on trees". Using modern technology to extract its essence, this is a new generation of walnut products - walnut oil. Walnut oil is a natural fruit juice made from high-quality walnuts as raw materials and using international leading technology. In the international market, walnut oil is known as "Oriental olive oil" and is favored by consumers just like olive oil. According to analysis, the main components of its fat are linoleic acid glyceride, linolenic acid and oleic acid glyceride, which are essential fatty acids for human b...

Claims

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Application Information

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IPC IPC(8): C11B1/00C11B1/04C11B3/00C11B3/16C12P7/64
CPCC11B1/00C11B1/04C11B3/001C11B3/008C11B3/16C12P7/6463
Inventor 马立志刘晓燕王金华何劲安传相裴璞花谢丹
Owner GUIYANG UNIV
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