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Low-temperature linseed oil cold-pressing method

A linseed oil and low temperature technology, applied in the direction of fat oil/fat production, fat production, etc., can solve the problems of low utilization rate of linseed, high cost of linseed oil, low oil yield, etc., so as to improve the oil yield and precipitation rate of pressing , Improve the effect of oil yield

Inactive Publication Date: 2017-12-29
宁夏君星坊食品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the oil yield of the existing low-temperature pressing technology is low, resulting in low utilization rate of flax and high cost of flax oil

Method used

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  • Low-temperature linseed oil cold-pressing method
  • Low-temperature linseed oil cold-pressing method
  • Low-temperature linseed oil cold-pressing method

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A low-temperature cold pressing method for linseed oil is characterized in that it comprises the following steps:

[0021] A, put the linseed into the treatment solution and soak for 6h, the treatment solution includes the following components,

[0022] The citric acid of 15wt%, the urea of ​​7wt%, the tetraethyl ammonium perchlorate of 0.35wt%, the sodium polyacrylate of 2.5wt%, the balance is water;

[0023] B. Rinse the soaked linseed and then dry it;

[0024] C. Mix the dried linseed with the protective solution, and then put it into a crusher for crushing. The temperature during the crushing process is controlled at 50°C; the protective solution includes 25wt% arabinogalactose, 10wt% sodium metasulfite and 65wt% of water; the weight ratio of linseed and protective solution is 10:1;

[0025] D, filtering and drying the broken linseed particles;

[0026] E. The linseeds are put into the screw oil press for the first pressing, and the screw speed is 65rad / min;

[...

Embodiment 2

[0044] This embodiment is improved on the basis of Embodiment 1.

[0045] Use the linseed residue discharged in step G, add 2wt% sucrose ester, stir evenly and keep it at 60°C for 8 hours, then extract and refine, and further obtain linseed oil. After the above extraction and refining, the oil yield of linseed can be further improved to around 61%.

[0046] In this embodiment, by adding sucrose ester, the separation degree of oil in linseed residue can be improved, so that more oil can be obtained during re-extraction. In order to verify the effectiveness of the treatment by adding sucrose esters in this example, the linseed residue discharged from step G in the experiment of Example 1 was directly used for extraction and refining, and it was found that compared with the total oil yield before refining, the increase in the total oil yield It is less than 1‰, so direct extraction is ineffective.

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Abstract

The invention discloses a low-temperature linseed oil cold-pressing method. The method includes steps: A, soaking linseeds in treating fluid for 5-8h; B, flushing the soaked linseeds, and drying; C, mixing the dried linseeds with protecting fluid, and crushing in a crusher; D, filtering and drying crushed linseed particles; E, subjecting the linseed particles to primary pressing in a screw oil press; F, subjecting linseed residues obtained in primary pressing to secondary pressing in the screw oil press; G, subjecting linseed residues obtained in secondary pressing to tertiary pressing in the screw oil press. By the low-temperature linseed oil cold-pressing method, defects of the prior art can be overcome, and linseed oil yield is increased.

Description

technical field [0001] The invention relates to the technical field of linseed deep processing, in particular to a low-temperature cold pressing method of linseed oil. Background technique [0002] Linseed oil is rich in α-linolenic acid, DHA, EPA and other substances, which have good health care effects. In the prior art, obtaining linseed oil by low-temperature pressing (for example, Chinese invention patent application CN 104212629 A) can retain the nutrients in the linseed oil to the greatest extent. However, the oil yield of the existing low-temperature pressing technology is low, resulting in low utilization rate of linseed and high cost of linseed oil. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a low-temperature cold pressing method for linseed oil, which can solve the deficiencies of the prior art and improve the oil yield of linseed. [0004] In order to solve the above technical problems, the tec...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/06
CPCC11B1/04C11B1/06
Inventor 马少斌马少军李永华赵晨伟王桂英
Owner 宁夏君星坊食品科技有限公司
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