Method and device for extracting rapeseed oil by extrusion expansion aqueous enzymatic method

A technology of extrusion and puffing and water enzymatic method, which is applied in the production of edible oil/fat, fat oil/fat, and fat generation, and can solve the problem of low oil yield

Inactive Publication Date: 2012-07-11
NORTHEAST AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of low oil yield in the process of extracting rapeseed oil by enzymatic method, and to study a method ...

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  • Method and device for extracting rapeseed oil by extrusion expansion aqueous enzymatic method
  • Method and device for extracting rapeseed oil by extrusion expansion aqueous enzymatic method
  • Method and device for extracting rapeseed oil by extrusion expansion aqueous enzymatic method

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Embodiment Construction

[0017] specific implementation plan

[0018] Specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings,

[0019] A method for extracting rapeseed oil by extruding and expanding water enzymatically, the steps of the extraction method are as follows: (1) After peeling and crushing the rapeseed, extruding and expanding it with a twin-screw extruder with a cage structure, respectively obtaining Pressing rapeseed oil and puffed products, the hole diameter of the template of the twin-screw extrusion puffing machine is 12-20mm, the rotation speed of the extrusion screw is 40-120r / min, the temperature of the sleeve is 65-125°C, and the moisture content of the material is 8% -16%; (2) crush the puffed product and mix it with water to obtain a mixed solution, the weight ratio of the puffed product to water is 1:3-7; (3) add protease to the mixed solution for enzymolysis to obtain an enzymolyzed solution, the enzyme The hyd...

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Abstract

The invention relates to a method and a device for extracting rapeseed oil by an extrusion expansion aqueous enzymatic method, which belongs to the plant oil extraction technology. The method comprises the following steps: using a dual-screw extrusion-expansion machine with a squeeze cage structure for carrying out extrusion-expansion pretreatment to obtain the crushed rapeseed oil and expanded products, crushing and mixing the expanded products with water to obtain mixed liquid, adding protease in the mixed liquid for enzymatic hydrolysis, centrifugally separating to obtain the rapeseed oil extracted by the aqueous enzymatic method; the present invention has the advantages of novel and reasonable device design, simple process and high oil yield; the rapeseed oil obtained by rapeseed oil crushing and the aqueous enzymatic method has the advantages of light color, good quality and the like.

Description

technical field [0001] The invention belongs to a method and equipment for preparing vegetable oil, and mainly relates to a method and equipment for extracting oil by water enzymatic method of extrusion and puffing of rapeseed. Background technique [0002] Edible oil, as one of the important sources of nutrition for human beings, can be divided into animal edible oil and vegetable edible oil according to different sources. Among them, vegetable oil accounts for 80%, and animal oil accounts for 20%. Vegetable oil mainly comes from the four major oil crops such as soybean, rapeseed, peanut, and sunflower, among which the output of rapeseed is second only to the output of soybean. [0003] Rapeseed is a high-oil-containing oil. The traditional oil-making process mostly adopts the skin pre-pressing and leaching process. Due to the high degree of heat treatment of the material, the rapeseed is exposed to strong hydrothermal and anti-nutrient substances such as polyphenols, sina...

Claims

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Application Information

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IPC IPC(8): C11B1/00C11B1/06A23D9/04
Inventor 李杨江连洲齐宝坤朱秀清孙树坤
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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