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Linolenic acid-rich linseed oil and novel low-temperature cold pressing process thereof

A technology of linseed oil and linolenic acid, which is applied in the production of edible oil/fat, fat oil/fat, and fat production, can solve problems such as cumbersome process flow, achieve the effect of simple equipment requirements, easy process, and optimal utilization of resources

Inactive Publication Date: 2013-09-18
HEBEI AGRICULTURAL UNIV.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly solves the shortcomings that the existing traditional cold pressing method cannot effectively improve the pressing efficiency while ensuring the content of linolenic acid, ensuring product quality and cumbersome process flow, and provides a new low-temperature cold pressing process, so as to obtain rich flax sour product

Method used

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Effect test

Embodiment

[0023] 1) Cleaning and rinsing the linseed, free of raw seeds, bad seeds, stalks, sand and other impurities;

[0024] 2) Dry the linseed after rinsing with clean water. The drying temperature is controlled at 40°C, and the moisture content of linseed is 5%;

[0025] 3) The linseed in step 2 is pulverized, sieved, and the particle size is 3mm;

[0026] 4) Put the linseed powder after step 3 into the cold press machine, the cold pressing temperature is 35°C, the cold pressing pressure is 32MPa, and the cold pressing is carried out at low temperature;

[0027] 5) Collect the product through the collector, measure the linolenic acid content by GC-MS, and calculate the oil yield.

[0028] After the above steps, the extraction rate of linseed oil is 23.1%, and the content of linolenic acid is 51.7%.

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Abstract

The invention discloses linolenic acid-rich linseed oil and a novel low-temperature cold pressing process thereof. The novel low-temperature cold pressing process comprises the pre-treatment steps of: cleaning linseeds, removing impurities, rinsing, drying, crushing and sieving and the like. Four-element (cold pressing temperature, cold pressing pressure, material moisture content and material grain size) two-level factorial experiment is utilized to screen out three main interference factors including cold pressing pressure, material moisture content and material grain size; by using the linolenic acid content in finished product as an measurement index, response surface analysis is carried out for optimized analysis to obtain the best, environment-friendly and practical method of low-temperature cold pressing, so that the linolenic acid ingredients in the linseed oil are kept to the greatest extent; the obtained product can be used as functional food for being directly edible or additional material for being added to other food, so that the health-care effect is enhanced, and the comprehensive development utilization of the agricultural industrial crop flax in northern China is convenient.

Description

technical field [0001] The invention selects linseed as a raw material, and prepares a functional oil rich in linolenic acid——linseed oil through a novel low-temperature cold pressing process, which belongs to the field of food engineering. [0002] Background technique [0003] Flaxseed, also known as flaxseed, belongs to the genus Flax. It has a long history of cultivation in my country and is an important oil crop. Flaxseed oil is rich in a variety of unsaturated fatty acids, among which the content of α-linolenic acid can reach 40%~60%. α-linolenic acid is an essential fatty acid, also known as vitamin F, not only can synthesize the other two unsaturated fatty acids EPA and DHA, but also is the core substance involved in the synthesis, metabolism and transformation of phospholipids. Nowadays, in developed countries such as Europe and the United States, linseed oil has been used as a nutritional additive or functional food ingredient. [0004] The present invention sel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/06A23D9/02
Inventor 桑亚新王向红张雪娇
Owner HEBEI AGRICULTURAL UNIV.
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