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 proces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] Using 1 kg of Jinya No. 9 flax seed hull as raw material, using the method of the present invention to continuously extract flax gum and lignans, the steps are as follows:

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

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

[0025] (3) After solvent recovery of the solid phase obtained in (2), drying and ultra-fine pulverization, 250 g of flax gum is obtained. The viscosity of the flax gum is determined to be 11800mpa·s. The recovered alcohol is to be processed;

[0026] (4) Move the so...

Example Embodiment

[0028] Example 2

[0029] Using 1 kg of Tongyabai No. 1 flaxseed skins to continuously extract flax gum and lignans using the method of the present invention, the steps are as follows:

[0030] (1) Crush the flaxseed hulls into 20-50 mesh powder, put them into a heatable reaction vessel, add 30 kg of cold water, heat and stir until the water boils, and send the flaxseed hull aqueous solution to the separation factor Separated by a 2200 centrifuge;

[0031] (2) Concentrate the separated liquid phase into a paste, transfer the concentrated solution 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 solvent recovery of the solid phase separated in (2), drying and ultrafine pulverization, 217 grams of linseed gum is obtained. The viscosity of the linseed gum is determined to be 10400mpa·s, and the recovered alcohol is to be processed;

[0033] (4) Move the...

Example Embodiment

[0035] Example 3

[0036] Using 1 kg of Tongyabai No. 1 flaxseed skins to continuously extract flax gum and lignans using the method of the present invention, the steps are as follows:

[0037] (1) Crush the linseed hulls into 30-60 mesh powder, put them into a heatable reaction vessel, add 35 kg of cold water, heat and stir until the water boils, and send the aqueous solution of linseed hulls to the separation factor Centrifuge separation of 2800;

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

[0039] (3) After solvent recovery of the solid phase obtained in (2), drying and ultra-fine pulverization, 222 g of flax gum is obtained. The viscosity of the flax gum is determined to be 11000mpa·s, and the recovered alcohol is to be processed;

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

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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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