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Method for simultaneously extracting and separating flaxseed gum and SDG (Secoisolariciresinol Diglucoside) from flaxseeds

A technology of flax lignans and flaxseed gum, applied in chemical instruments and methods, preparation of sugar derivatives, sugar derivatives, etc., can solve the problems of cumbersome production process and large energy waste, achieve simple process, reduce The effect of production costs

Inactive Publication Date: 2011-12-07
GANSU YALAN PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the existing technologies are extracting flax lignans from flaxseed defatted meal with hydrous alcohol, or extracting flax lignans from flaxseeds and then extracting flaxseed gum separately, but these production processes are relatively cumbersome and waste energy. bigger

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 A method for simultaneously extracting and separating flaxseed gum and flax lignans from flaxseeds, comprising the following steps:

[0018] (1) Put 300kg of flaxseed into a 2000L reaction kettle produced by Wuxi Xuelang Chemical Equipment Factory after adding water, stir at a temperature of 10~30°C for 1~2h, and then use a 10mL reactor produced by Shanghai Dazhang Filtration Equipment Co., Ltd. 2 Plate and frame filter, filter, extract the filter residue several times in the same way, filter the decoction, and combine the filtrate; the amount of water added each time is 8 times the mass of flaxseed.

[0019] (2) Concentrate the filtrate obtained in step (1) under reduced pressure with a 20L rotary evaporator produced by Jiangsu Xinghai Instrument Equipment Co., Ltd. at a temperature of 40-50° C. to a clear paste with a relative density of 1.12-1.18.

[0020] (3) Add ethanol to the clear paste to make the alcohol content reach 30% to 95%, stir evenly, and stan...

Embodiment 2

[0023] Example 2 A method for simultaneously extracting and separating flaxseed gum and flax lignans from flaxseeds, comprising the following steps:

[0024] (1) Put 300kg of flaxseed into a 2000L reaction kettle produced by Wuxi Xuelang Chemical Equipment Factory after adding water, stir at 30-50°C for 1-2 hours, then filter with a plate and frame filter, and extract the residue in the same way After several times, the decoction is filtered and the filtrates are combined; wherein the amount of water added each time is 12 times the mass of flaxseed.

[0025] (2) Concentrate the filtrate obtained in step (1) under reduced pressure with a 20L rotary evaporator at a temperature of 50-60° C. to a clear paste with a relative density of 1.12-1.18.

[0026] (3) Add ethanol to the clear paste to make the alcohol content reach 30% to 95%, stir evenly, and stand at room temperature for 24 to 48 hours, and obtain 35kg of precipitate after filtration;

[0027] (4) The precipitate is wash...

Embodiment 3

[0029] Example 3 A method for simultaneously extracting and separating flaxseed gum and flax lignans from flaxseeds, comprising the following steps:

[0030] (1) Put 300kg of flaxseed into a 2000L reaction kettle produced by Wuxi Xuelang Chemical Equipment Factory after adding water, stir at 50-70°C for 1-2 hours, then filter with a plate and frame filter, and extract the residue in the same way After several times, the decoction is filtered and the filtrates are combined; the amount of water added each time is 10 times the mass of flaxseed.

[0031] (2) Concentrate the filtrate obtained in step (1) under reduced pressure with a 20L rotary evaporator at a temperature of 60-70° C. to a clear paste with a relative density of 1.12-1.18.

[0032] (3) Add ethanol to the clear paste to make the alcohol content reach 30% to 95%, stir evenly, and stand at room temperature for 24 to 48 hours, and obtain 40kg of precipitate after filtration;

[0033] (4) The precipitate is washed with ...

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Abstract

The invention relates to a method for simultaneously extracting and separating flaxseed gum and SDG from flaxseeds, comprising the following steps of: (1) adding water to the flaxseeds and then extracting for several times under stirring, filtering decoction and merging filtrates; (2) carrying out reduced pressure concentration on the obtained filtrate in the step (1) to obtain cream the relativedensity of which is 1.12-1.18; (3) adding alcohol to the cream so as to make the alcohol content of the cream reach 30-95 percent, evenly stirring, standing for 24-48h at the room temperature and filtering to obtain precipitates; (4) washing, filtering, drying and crushing the precipitates to obtain the flaxseed gum and meanwhile a cleaning solution and the filtrate; and (5) merging the obtained cleaning solution and the filtrate in the step (4), then recovering the alcohol in manner of the reduced pressure and concentrating into cream the relative density of which is 1.08-1.23; and drying and crushing the cream to obtain the SDG. The invention has simple process, can simultaneously extract the flaxseed gum and the SDG from the flaxseeds and is especially suitable for scale production.

Description

technical field [0001] The invention relates to a method for extracting active ingredients from flaxseeds, in particular to a method for simultaneously extracting and separating flaxseed gum and flax lignans from flaxseeds. Background technique [0002] Flax (Linum usitatissim um L.) is one of the important oil crops in China. In addition to rich oil and protein, flaxseed also contains high dietary fiber, minerals, vitamins A, B, D, E, phenolic acids, flavonoids, phytic acid, lecithin and other nutrients . Because flaxseed is rich in essential fatty acids (EFA's) - α-linolenic acid (LNA) and linoleic acid, and the natural ratio of these two fatty acids is more suitable for humans, flaxseed has always been considered the best source of essential fatty acids for humans. good source. [0003] However, studies in recent years have found that flaxseed also contains a component with great potential for development-lignans. Lignan is a physiologically active substance present i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L5/00C08L89/00C07H15/18C07H1/08
Inventor 董万有张继义
Owner GANSU YALAN PHARMA
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