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Method for extracting flax lignans from flaxseed husks by microwaves

A flax lignan, flax seed husk technology, applied in chemical instruments and methods, preparation of sugar derivatives, sugar derivatives, etc., can solve the problems of unsuitable large-scale application, long extraction time, high equipment requirements, and prevent diabetes. and atherosclerosis, reducing the difficulty of purification, and high product safety.

Inactive Publication Date: 2018-10-16
广州利众生物科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The Chinese patent with the application number 200910230452.8 discloses a method for extracting flax lignans from flaxseed bark, by first adding ethanol aqueous solution, then adding alkaline aqueous solution for extraction, and after two-phase extraction, the macroporous resin is eluted to obtain flax lignans However, this method has many technological processes, long extraction time, large amount of organic solvent required for extraction, and low extraction rate, so it is not suitable for large-scale application
The traditional flaxseed lignans extraction mostly adopts organic solvent extraction method, and the currently published patents related to flaxseed lignans extraction are: Chinese patent application publication numbers CN103396461A, CN101570556B, CN101239995A, the contents of these patents are mainly about Separation and purification of flaxseed lignans, and the improvement of the traditional organic solvent extraction process of flaxseed lignans, the extracted flaxseed lignans have a low content and take a long time
In recent years, some other methods, including enzymatic extraction, supercritical fluid extraction, and microbial fermentation, have been applied to the extraction of flaxseed lignans, but they are all due to high costs, high equipment requirements, and difficult control of reaction conditions. not widely used due to

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0026] This embodiment includes the following steps:

[0027] The linseed meal after oil extraction is pulverized by a pulverizer, and passed through a 30-mesh sieve, and the sieved upper layer linseed husk and lower layer linseed kernel are collected respectively. Take 10Kg of linseed shells and add them to 200L purified water, microwave-assisted hot water extraction, extraction temperature 60°C, extraction time 40min, output power 600W, stirring speed 900r / min, extraction 2 times, extraction solution centrifuged, collected Lower layer degummed linseed husk. Add distilled water to the obtained degummed linseed husk, stir evenly, add 3.00% cellulase enzyme solution, adjust the acidity to pH 5, and enzymatically hydrolyze in a water bath at 40°C for 70 minutes. Adjust the obtained enzymolysis mixture to pH 4.5, add ethanol until the ethanol content of the solution is 70%, treat the enzymolysis mixture with a solid-to-liquid ratio of 1:20 and a microwave power of 100W for 3 min...

Embodiment 2

[0042] This embodiment includes the following steps:

[0043] The linseed meal after oil extraction is pulverized by a pulverizer, and passed through a 30-mesh sieve, and the sieved upper layer linseed husk and lower layer linseed kernel are collected respectively. Take 10Kg of linseed shells and add them to 300L purified water, microwave-assisted hot water extraction, extraction temperature 100°C, extraction time 60min, output power 750W, stirring speed 600r / min, extraction 2 times, extraction solution centrifuged, collected Lower layer degummed linseed husk. Add distilled water to the obtained degummed linseed husk, stir evenly, add diluted 1.00% cellulase enzyme solution, adjust the acid to the optimum pH 5, and enzymatically hydrolyze in a water bath at 56°C for 100 minutes. Adjust the resulting enzymolysis mixture to pH 4.5, add ethanol until the ethanol content of the solution is 60%, treat the enzymolysis mixture with a solid-to-liquid ratio of 1:20 and a microwave pow...

Embodiment 3

[0045] This embodiment includes the following steps:

[0046]The linseed meal after oil extraction is pulverized by a pulverizer, and passed through a 30-mesh sieve, and the sieved upper layer linseed husk and lower layer linseed kernel are collected respectively. Take 10Kg of linseed shells and add them to 250L of purified water, microwave-assisted hot water extraction, extraction temperature 90°C, extraction time 50min, output power 650W, stirring speed 800r / min, extraction 2 times, extraction solution centrifuged, collected Lower layer degummed linseed husk. Add distilled water to the obtained degummed linseed husk, stir evenly, add 2.00% cellulase enzyme solution, adjust the acidity to pH 5, and enzymatically hydrolyze in a water bath at 60° C. for 120 minutes. Adjust the resulting enzymolysis mixture to pH 4.5, add ethanol until the ethanol content of the solution is 55%, treat the enzymolysis mixture with a solid-to-liquid ratio of 1:35 and a microwave power of 230W for...

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Abstract

The invention relates to a purification method for flax lignans from flaxseed husks and belongs to the field of active component extraction. The purification method for flax lignans from the flaxseedhusks comprises steps as follows: flaxseed husk and kernel separation, degumming, enzymolysis, extraction of flaxseed lignans, purification and the like. Compared with a traditional organic solvent extraction method, the extraction effect of flax lignans is better, and the extraction efficiency is greatly improved. The purity of obtained flax lignans is higher, so that the difficulty of followinghigh-purity product purification is reduced, and the application range of a product is enlarged.

Description

technical field [0001] The invention relates to a microwave extraction method of flax lignans, in particular to a method for extracting flax lignans from flax seed shells. Background technique [0002] Lignan, also known as lignan, is a phytoestrogen that is very similar to human estrogen. Lignans are small molecular weight secondary metabolites that are widely distributed in plants and exist in most fiber-rich plants. Studies have shown that lignans are contained in oil crop seeds, grains, vegetables and fruits, among which the lignans content in flaxseed is the highest, and the lignan secoisolarix resinol diglucoside (SDG) in flaxseed The content is about 1%-4% (W / W), which is 75-800 times higher than that of other 66 kinds of foods (Zhao Li et al., China Agricultural Science Bulletin, 2006, 22(4):88-92). [0003] In recent years, lignans have been proved by many scientific researchers to have many potential physiological activities such as anti-oxidation, anti-cancer, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/18C07H1/08
CPCC07H1/08C07H15/18
Inventor 张震邓凤桂汪勇葛佳佳梁珊
Owner 广州利众生物科技有限公司
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