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Method for extracting high-purity flaxseed oil by aid of molecular distillation processes

A technology of molecular distillation and linseed oil, which is applied in the direction of fat oil/fat refining, fat production, fatty acid production, etc., can solve the problem that it is difficult to obtain pure α-linolenic acid products, so as to achieve stable and reliable product quality, maintain naturalness, reduce pollution effect

Inactive Publication Date: 2016-06-22
QINGHAI FLAXSEED BIOTECH CO LTD
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Problems solved by technology

[0003] At present, the separation methods of α-linolenic acid mainly include adsorption column method, supercritical fluid extraction method, urea package method, etc. These methods have their own characteristics, but it is difficult to obtain high-purity α-linolenic acid products

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  • Method for extracting high-purity flaxseed oil by aid of molecular distillation processes

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Embodiment 1

[0019] Such as figure 1 - figure 2 As shown, a method for extracting high-purity α-linolenic acid by molecular distillation in the present invention comprises the following steps: 1) The purpose of the first-order molecular distillation step is to remove light impurities in the raw material, and the distillation temperature is 110°C. The heating temperature is 80°C, the internal cooling temperature is 40°C, and the rotational speed is 290r / min. The test conditions are used to separate and obtain the product of the first-stage molecular distillation; 2) The second-stage molecular distillation step The second-stage molecular distillation uses the product of the first-stage molecular distillation receiving tank as raw material , the purpose is to remove the heavy impurities; in the two-stage molecular distillation, the preheating temperature is fixed, the distillation temperature is controlled at 200°C, the internal cooling temperature is 40°C, and the wiper speed is 40r / min to ...

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Abstract

The invention relates to the technical field of food processing, in particular to a method for extracting high-purity flaxseed oil by the aid of molecular distillation processes.The method includes steps of 1), carrying out primary molecular distillation; 2), carrying out secondary molecular distillation to obtain the high-purity flaxseed oil with a high-purity alpha-linolenic acid product index and higher than or equal to 90% of alpha-linolenic acid.Compared with the traditional chemical separation method, the method for extracting the high-purity flaxseed oil by the aid of the molecular distillation processes has the advantages that molecular distillation is a purely physical procedure, accordingly, large quantities of solvents can be saved, and environmental pollution can be decreased; the content of alpha-linolenic acid in products can be increased, new impurities and toxic substances can be prevented, natural properties of raw materials can be kept, and accordingly molecular distillation which is a modern separation technology has a certain industrialization prospect in the aspect of extracting alpha-linolenic acid from flaxseed oil.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a method for extracting high-purity linseed oil by molecular distillation. Background technique [0002] Flax (Linumusitatissimum L.), also known as flax, is an annual herb of the family Linaceae and the genus Flax. One of the important economic crops in China, mainly distributed in North China and Northwest China. Flax fiber is a high-quality raw material for the textile industry, and flaxseed is one of the raw materials for edible oils and fats. Flaxseed oil is a dry oil made from flaxseed. Because it is rich in unsaturated fatty acids, especially a-linolenic acid content of 40%-60%, linseed oil is called "treasure house of essential fatty acids" . Studies in recent years have shown that a-linolenic acid has many health benefits such as lowering blood fat, lowering blood pressure, enhancing immunity, and improving memory. Therefore, it has attracted increasing attent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/12C11C1/10
CPCC11B3/12C11C1/10
Inventor 朱军庞全世杨威胡举忠杨震发何峰邦马小芳曹莉刘伟朝吕增胜米林
Owner QINGHAI FLAXSEED BIOTECH CO LTD
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