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Method for continuously extracting flaxseed gum and lignan from flaxseed husks

A technology of linseed bark and lignans, applied in chemical instruments and methods, sugar derivatives, organic chemistry, etc., can solve the problems of low yield of target products, complicated extraction process, single extracted product, etc., and improve the solubility , high viscosity, and the effect of improving the extraction rate

Active Publication Date: 2013-01-02
深圳市诚致生物开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are many reports on the extraction of flax gum and lignans, but there are problems such as complex extraction process, single extraction product, low yield of target product, high production cost, and lack of economic rationality in the extraction process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] With 1 kilogram of Jinya No. 9 linseed bark as raw material, adopt the method of the present invention to continuously extract linseed gum and lignans, the steps are as follows:

[0023] (1) Crush the linseed husk into 50-80 mesh powder, put it into a heatable reaction vessel, add 40 kg of hot water, heat and stir until the water boils, then send the linseed husk aqueous solution into the separation centrifuge separation with a factor of 3500;

[0024] (2) Concentrate the separated liquid phase into a paste, move the concentrated liquid to a stirring container, slowly add 99% edible alcohol during stirring, dilute to a solution with an alcohol content of 95%, and perform solid-liquid separation;

[0025] (3) After recovering the solvent from the solid phase separated in (2), dry and ultrafinely pulverize to obtain 250 grams of flax gum. The measured viscosity of the flax gum is 11800mpa·s, and the recovered alcohol is to be treated;

[0026] (4) Move the solid phase se...

Embodiment 2

[0029] Adopt the method of the present invention to continuously extract linseed gum and lignans with 1 kilogram of Tongyabai No. 1 linseed bark, the steps are as follows:

[0030] (1) Crush the linseed husk into 20-50 mesh powder, put it into a heatable reaction vessel, add 30 kg of cold water, heat and stir until the water boils, then send the linseed husk aqueous solution into the separation factor It is separated by a 2200 centrifuge;

[0031] (2) Concentrate the separated liquid phase into a paste, move the concentrated liquid to a container with stirring, slowly add 90% edible alcohol during stirring, dilute to a solution with an alcohol content of 85%, and perform solid-liquid separation;

[0032] (3) After recovering the solvent from the solid phase separated in (2), dry and ultrafinely pulverize to obtain 217 grams of flax gum. The viscosity of the flax gum was determined to be 10400 mpa s, and the recovered alcohol was to be treated;

[0033] (4) Move the solid phas...

Embodiment 3

[0036] Adopt the method of the present invention to continuously extract linseed gum and lignans with 1 kilogram of Tongyabai No. 1 linseed bark, the steps are as follows:

[0037] (1) Crush the linseed husk into 30-60 mesh powder, put it into a heatable reaction vessel, add 35 kg of cold water, heat and stir until the water boils, then send the linseed husk aqueous solution into the separation factor It is separated by a 2800 centrifuge;

[0038](2) Concentrate the separated liquid phase into a paste, move the concentrated liquid to a stirring container, slowly add 95% edible alcohol during stirring, dilute to a solution with an alcohol content of 91%, and perform solid-liquid separation;

[0039] (3) After recovering the solvent from the solid phase separated in (2), dry and ultrafinely pulverize to obtain 222 grams of flax glue, the viscosity of the flax glue was determined to be 11000mpa s, and the recovered alcohol was to be treated;

[0040] (4) Move the solid phase sep...

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PUM

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Abstract

The invention discloses a method for continuously extracting flaxseed gum and lignan from flaxseed husks. The method comprises the following steps of 1, crushing flaxseed husks, adding a certain amount of water into the crushed flaxseed husks, stirring with heating until water boiling, and carrying out solid-liquid separation at a water boiling point, 2, concentrating a liquid phase separated by the step 1, adding a certain amount of alcohol into the concentrated solution, stirring and carrying out solid-liquid separation, 3, drying a solid phase separated by the step 2, crushing to obtain flaxseed gum, and recovering alcohol for next treatment, 4, adding alcohol separated by the step 2 into a solid phase separated by the step 1, carrying out dilution, stirring, and carrying out solid-liquid separation, and 5, transferring the alcohol recovered by the step 3 and a liquid phase separated by the step 4 into an alcohol rectifying tower, recycling a distillate of high-concentration alcohol, collecting a rectifying product liquid, adding an inorganic alkali solution into the rectifying product liquid for alkaline hydrolysis, adjusting a pH value of alkaline hydrolysis products to 7 by an inorganic acid, and carrying out concentration, drying and crushing to obtain lignan extract. The method has a high extract yield, a low production cost and no pollution on the environment, and realizes high efficiency, continuous extraction, time saving and labor saving.

Description

technical field [0001] The invention relates to the technical field of extraction of natural products, in particular to a method for continuously extracting linseed gum and lignans from linseed husks. Background technique [0002] Flaxseed has been used as food and medicine for more than 5,000 years. my country is a major producer of flaxseed, ranking third in the world's annual planting area and second in output. Flaxseed contains a variety of nutrients and active substances with high development value, which are distributed in different tissue structures of flaxseed. Flaxseed skin contains about 25% flax glue and 2.4% lignans, which are about 2.2 times the content in flaxseed. Flax glue has the characteristics of high viscosity, strong water absorption, good emulsification effect, and adsorption effect on heavy metals. It can be used as thickener, adhesive, stabilizer, emulsifier and foaming agent. It is widely used in food, daily chemical and pharmaceutical industries. ...

Claims

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Application Information

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IPC IPC(8): C07H15/18C07H1/08C08B37/00
Inventor 胡晓军李群许光映高忠东
Owner 深圳市诚致生物开发有限公司
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