Production technique of low-temperature pressed rapeseed oil

A production process and technology for rapeseed oil, applied in the production of fat oil/fat, production of fat, edible oil/fat, etc., can solve the problems of low oil yield, pollution, toxic residues, etc. High quality grade, the effect of improving the ability to absorb toxic and harmful substances

Inactive Publication Date: 2013-03-06
FEIXI RONGXIN GRAIN & OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing rapeseed oil is fried and pressed, or extracted with organic solvents, or supercritically extracted, etc., all of which have problems such as organic solvent pollution, low oil yield, and toxic residues to varying degrees.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] A production process of low-temperature pressed rapeseed oil, comprising the following steps:

[0026] (1) Clean the rapeseed and dry it until the water content is 5-8%;

[0027] (2) Send it to the cold storage for 16-18 hours, the temperature of the cold storage is -25- -20°C; after taking it out, send it to the tunnel drying room for drying, the temperature of the drying room is 50-60°C, The time is 5-6 hours; repeated several times;

[0028] (3) Microwave heating the dried rapeseed until 6-7 mature;

[0029] (4) Put 6-7 mature rapeseeds into the press, add the squeezed oil into water and stir, separate the oil and water, filter and remove impurities, and separate the virgin rapeseed oil;

[0030] (5) The separated rapeseed meal is mixed with 10-20 mesh coarse powder of rapeseed shell equivalent to 3-5% of the weight of rapeseed residue, and then enters the oil press for pre-pressing to obtain second-pressed crude oil and seed cake ;Secondly squeezed crude oil can ...

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PUM

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Abstract

The invention discloses a production technique of low-temperature pressed rapeseed oil, wherein rapeseeds are cleaned, subjected to impurity removal, subjected to wall breaking based on freezing treatment and then fried to 60-70% rape to contribute to the oil leaching, a pressing technique is utilized in the invention, and a specially treated adsorbent is used for decoloring. A technique of heating after freezing is utilized in the invention to facilitate the cell disruption of the rapeseeds so as to improve the oil extraction rate, and the oil extraction rate is 5-6% higher than that of a traditional pressing method; and the oil is extracted by the pressing technique in the invention, so that no pollution exists, the purity of the oil product is guaranteed, and the oil is all natural and meets the demands of green food.

Description

technical field [0001] The invention relates to the field of rapeseed oil production, in particular to a rapeseed oil production process. Background technique [0002] Rapeseed oil, commonly known as rapeseed oil, is also called coriander oil. It is a transparent or translucent liquid obtained by pressing rapeseed. It is one of the main edible oils in my country. It is mainly produced in the Yangtze River Basin, Southwest, Northwest and other places. The world's first, the human body's absorption rate of rapeseed oil is very high, up to 99%. Therefore, the unsaturated fatty acids such as linoleic acid and vitamin E and other nutrients contained in it can be well absorbed by the body, and have certain effects of softening blood vessels and delaying aging. Existing rapeseed oil is fried and then squeezed, or extracted with organic solvents, or supercritically extracted, etc., all of which have problems such as organic solvent pollution, low oil yield, and toxic residues to var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/06C11B1/04C11B3/10A23D9/02
Inventor 马家荣
Owner FEIXI RONGXIN GRAIN & OIL
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