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Process for comprehensively utilizing flax seed skin

A technology of linseed husk and linseed, applied in the technical field of comprehensive utilization of linseed husk, can solve the problems of poor color, low purity of dietary fiber products, high impurity content of raw materials, etc., and achieve improved water holding capacity and swelling performance, and obvious Industrial productivity and economic benefits, the effect of simple preparation process

Inactive Publication Date: 2013-04-03
RES INST OF AGRO PROD PROCESSING SHANXI ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first two methods do not effectively extract and utilize the four components rich in flaxseed husk, and the latter method has high raw material impurities, and the resulting dietary fiber product has low purity and poor color

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Separate the husk and kernel of the flaxseed, and control the kernel-containing rate in the husk to 10%. Use linseed hulls as raw materials, crush them through a 60-mesh sieve, degrease twice with No. 6 solvent oil at a material-to-liquid weight ratio of 1:8, filter, and dry the linseed hull powder for later use; recover the solvent from the filtrate to obtain linseed oil, and obtain rate of 21.5%;

[0023] (2) According to the linseed hull powder:water weight ratio of 1:40, the flaxseed hull powder is immersed in water for degumming, the extraction temperature is 70°C, the extraction time is 30 minutes, centrifuged, and solid-liquid separation.

[0024] (3), repeating step (2) 3 times to obtain glue and solid flax dietary fiber powder;

[0025] (4) Concentrate the glue solution to 30% of the original volume, add edible ethanol (95%) of 3 times the volume of the concentrate solution, precipitate for 2 hours after stirring, centrifuge, dry and pulverize the solid to...

Embodiment 2

[0030] (1) Separate the husk and kernel of the flaxseed, and control the kernel content rate in the husk to 8%. Use linseed hulls as raw materials, crush them through a 20-mesh sieve, degrease twice with No. 6 solvent oil at a material-to-liquid weight ratio of 1:4, filter, and dry the flaxseed hull powder for later use; recover the solvent from the filtrate to obtain linseed oil, and obtain The rate is 22.8%;

[0031] (2) According to the linseed hull powder:water weight ratio of 1:10, the flaxseed hull powder is immersed in water for degumming, the extraction temperature is 90°C, the extraction time is 20 minutes, centrifuged, and solid-liquid separation.

[0032] (3), repeating step (2) 5 times to obtain glue and solid flax dietary fiber powder;

[0033] (4) Concentrate the glue solution to 15% of the original volume, add edible ethanol (95%) twice the volume of the concentrate solution, precipitate for 4 hours after stirring, centrifuge, dry and pulverize the solid to obt...

Embodiment 3

[0038] (1) Separate the husk and kernel of the flaxseed, and control the kernel-containing rate in the husk to 12%. Use linseed hulls as raw materials, crush them through a 60-mesh sieve, use No. 6 solvent oil to degrease 3 times at a material-to-liquid weight ratio of 1:5, filter, and dry the flaxseed hull powder for later use; recover the solvent from the filtrate to obtain linseed oil, and obtain The rate is 24.9%;

[0039] (2) According to the linseed hull powder:water weight ratio of 1:30, the flaxseed hull powder is immersed in water for degumming, the extraction temperature is 80°C, the extraction time is 40 minutes, centrifuged, and solid-liquid separation.

[0040] (3), repeat step (2) twice to obtain glue and solids flax dietary fiber powder;

[0041] (4) Concentrate the glue solution to 25% of the original volume, add 4 times the volume of edible ethanol (95%) of the concentrate solution, precipitate for 3 hours after stirring, centrifuge, dry and pulverize the sol...

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Abstract

The invention relates to a process for comprehensively utilizing flax seed skin. The process comprises the following steps of: taking the flax seed skin as a raw material, degreasing the flax seed skin by solvent-extracted oil No.6, filtering, and drying flax seed skin powder; recovering the solvent-extracted oil No.6 from a filtrate to obtain flax oil; immersing the flax seed skin powder to water for degumming and then carrying out solid-liquid separation to obtain glue liquor and a solid matter such as flax dietary fiber powder; adding the glue liquor to ethanol, stirring for precipitation separation, drying and smashing the solid matter to obtain flax glue; carrying out alkaline hydrolysis on supernate, adding hydrochloric acid for neutralization, concentrating the mixture to dryness, adding the ethanol for filtering, and recovering ethanol solution to obtain a flax lignan crude product; adding the ethanol to the solid matter of the flax dietary fiber powder for standing, carrying out solid-liquid separation, air-drying the solid matter such as flax dietary fiber, and recycling the ethanol from the solution; and superfinely grinding the air-dried flax dietary fiber to obtain the superfine flax dietary fiber powder. By utilizing the process, four products can be obtained by one process, the flax seed skin is comprehensively developed and utilized furthest, and the additional value of the flax seed skin is enhanced.

Description

technical field [0001] The invention belongs to a process for comprehensive utilization of linseed bark. technical background [0002] As an important economic oil crop, linseed has many health functions and is widely used in the food industry. my country is one of the countries with the highest flaxseed production in the world, mainly concentrated in North China and Northwest China. At present, the domestic flaxseed is mostly processed to extract oil, and the cake is used for feed, but the functional components rich in flaxseed skin have not been fully utilized. Flaxseed skin contains about 25% linseed oil, of which the content of α-linolenic acid is greater than 50%. α-linolenic acid is an omega-3 polyunsaturated fatty acid, which is an essential fatty acid that the human body cannot synthesize by itself. Flaxseed husk contains about 20mg / g lignans (SDG), which is more than a thousand times that of other grains. Flax lignans are a kind of phytoestrogen, which can preven...

Claims

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Application Information

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IPC IPC(8): C11B13/02C07H15/18C07H1/08A23L1/308A23L21/25
CPCY02W30/74
Inventor 梁霞李群许光映
Owner RES INST OF AGRO PROD PROCESSING SHANXI ACADEMY OF AGRI SCI
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