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A method for near-infrared pretreatment-assisted aqueous enzymatic extraction of rapeseed oil

A near-infrared, pretreatment technology, applied in the direction of edible oil/fat, fat oil/fat production, fat oil/fat refining, etc., can solve the problems of insufficient flavor of oil and low extraction rate of clear oil, etc., and achieve obvious roasted aroma and extraction rate The effect of high and low acid value

Active Publication Date: 2019-09-03
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as domestic and foreign scholars further deepened the research on the aqueous enzymatic method, they found that there were problems such as low oil extraction rate and insufficient oil flavor when the single aqueous enzymatic method was used to extract rapeseed oil. It is necessary to develop a production process with high oil extraction rate and excellent oil flavor, so as to improve the extraction rate of rapeseed oil and enhance the oil flavor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Put 100g of peeled rapeseed into a medium-short wave infrared heating box and heat for 40min at a temperature of 110°C. After cooling to room temperature, transfer to a small high-speed pulverizer for pulverization for 4 minutes. The crushed rapeseed and water were mixed at a ratio of 1:3 (w / w) to obtain a rapeseed mixture, and the mixture was treated with heat and humidity for 25 minutes at a temperature of 90°C. Cool the rapeseed mixture after wet heat treatment to 40°C, adjust the ratio of solid to liquid to 1:5, the pH of the mixture to 9.0, and carry out alkaline extraction for 30 minutes. Add 1.0% (v / w) high temperature resistant protease (300,000 U / g) to the mixed solution after alkali extraction for enzymolysis, the enzymolysis time is 3.0h, the enzymolysis temperature is 60°C, and the enzymolysis pH is 8.0 ; Then centrifuge the enzymolysis solution at a centrifugal speed of 4500r / min for 10 minutes, and centrifuge to obtain free oil 1, emulsified oil, hydrolyz...

Embodiment 2

[0027] Put 100g of peeled rapeseed into a medium-short-wave infrared heating box and heat for 30min at a temperature of 120°C. After cooling to room temperature, transfer to a small high-speed pulverizer for pulverization for 4 minutes. The crushed rapeseed and water were mixed at a ratio of 1:3 (w / w) to obtain a rapeseed mixture, and the mixture was treated with heat and humidity for 25 minutes at a temperature of 100°C. Cool the rapeseed mixture after wet heat treatment to 40°C, adjust the ratio of solid to liquid to 1:5, the pH of the mixture to 9.0, and carry out alkaline extraction for 30 minutes. Add 1.5% (v / w) high temperature resistant protease (300,000 U / g) to the mixed solution after alkali extraction for enzymolysis, the enzymolysis time is 2.5h, the enzymolysis temperature is 70°C, and the enzymolysis pH is 8.5 ; Then centrifuge the enzymolysis solution at a centrifugal speed of 4500r / min for 10 minutes, and centrifuge to obtain free oil 1, emulsified oil, hydroly...

Embodiment 3

[0029] Put 100g of peeled rapeseed into a medium-short wave infrared heating box and heat for 40min at a temperature of 110°C. After cooling to room temperature, transfer to a small high-speed pulverizer for pulverization for 4 minutes. The crushed rapeseed and water were mixed at a ratio of 1:3 (w / w) to obtain a rapeseed mixture, and the mixture was treated with heat and humidity for 25 minutes at a temperature of 90°C. Cool the rapeseed mixture after wet heat treatment to 40°C, adjust the ratio of solid to liquid to 1:5, the pH of the mixture to 9.0, and carry out alkaline extraction for 30 minutes. Add 1.0% (v / w) high temperature resistant protease (300,000 U / g) to the mixed solution after alkali extraction for enzymolysis, the enzymolysis time is 3.0h, the enzymolysis temperature is 70°C, and the enzymolysis pH is 8.0 ; Then centrifuge the enzymolysis solution at a centrifugal speed of 4500r / min for 10 minutes, and centrifuge to obtain free oil 1, emulsified oil, hydrolyz...

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Abstract

The invention discloses a method for extracting rapeseed oil through a near-infrared preprocessing auxiliary aqueous enzymatic process and belongs to the field of food deep processing. In order to solve the problems of low boiled oil extraction rate and insufficient grease flavor of the single aqueous enzymatic method for extracting rapeseed oil, high-quality cabbage type double-low peeling rapeseeds are taken as raw materials, a near-infrared heating technique is adopted for preprocessing the rapeseed oil, and an aqueous enzymatic process oil extraction technique is adopted for preparing high-quality rapeseed oil.

Description

technical field [0001] The invention relates to a method for extracting rapeseed oil by an aqueous enzymatic method assisted by near-infrared pretreatment, which belongs to the field of food intensive processing. Background technique [0002] Rapeseed contains 40%-50% oil and 23%-27% protein. It is not only the main oil crop, but also a high-quality vegetable protein resource. As a new oil-making process, aqueous enzymatic method is attracting more and more attention and attention. Compared with the traditional process, it has the advantages of mild conditions, simple process, green and environmental protection. However, as domestic and foreign scholars further deepened the research on the aqueous enzymatic method, they found that there were problems such as low oil extraction rate and insufficient oil flavor when the single aqueous enzymatic method was used to extract rapeseed oil. It is very necessary to develop a production process with high oil extraction rate and exce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/04C11B1/00C11B3/00A23D9/04
Inventor 刘元法孟宗魏松丽
Owner JIANGNAN UNIV
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