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Method for continuously extracting flaxseed gum and secoisolariciresinol diglucoside from flaxseed meal

A technology of flax lignans and flaxseed gum, applied in chemical instruments and methods, preparation of sugar derivatives, sugar derivatives, etc., to achieve the effect of expanding the scope of application, simple and reliable methods, and wide sources

Inactive Publication Date: 2018-08-17
广州利众生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, domestic methods for continuous and efficient extraction and separation of flaxseed gum and flax lignans from flaxseed meal have not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Get the linseed meal after oil extraction, pulverize, pass through a 20-mesh sieve, collect the sieved upper layer linseed husk and lower layer linseed kernel respectively; the linseed husk and water are mixed according to the mass ratio of 1:20, keep The extraction temperature is 60°C, the microwave output power is 600W, and the stirring speed is 600r / min. Microwave-assisted hot water extraction of linseed gum is carried out. After extraction for 40 minutes, the extraction mixture is put into a centrifuge tube, and after a little cooling, it is centrifuged at 3500r / min. For 20 minutes, collect the upper layer of mucus and the lower layer of linseed husk respectively; concentrate the upper layer of mucus under reduced pressure, control the amount of absolute ethanol added, until the concentration of the ethanol solution in the solution is 50%, stir for alcohol precipitation, stand for 2 hours, and put the alcohol precipitation solution in Centrifuge at 3500r / min for 20mi...

Embodiment 2

[0025] Take the linseed meal after oil extraction, pulverize, pass through a 30-mesh sieve, collect the sieved upper layer linseed husk and lower layer linseed kernel respectively; the linseed husk and water are mixed according to the mass ratio of 1:30, keep The extraction temperature is 100°C, the microwave output power is 800W, and the stirring speed is 900r / min. Microwave-assisted hot water extraction of linseed gum is carried out. After extraction for 60 minutes, the extraction mixture is put into a centrifuge tube, and after a little cooling, it is centrifuged at 5000r / min. For 30 minutes, collect the upper layer of mucus and the lower layer of linseed husk respectively; concentrate the upper layer of mucus under reduced pressure, control the amount of absolute ethanol added until the concentration of the ethanol solution in the solution is 90%, stir for alcohol precipitation, stand for 2 hours, and put the alcohol precipitation solution in Centrifuge at 5000r / min for 30m...

Embodiment 3

[0028]Get the linseed meal after oil extraction, pulverize, pass through a 20-mesh sieve, collect the sieved upper layer linseed husk and lower layer linseed kernel respectively; the linseed husk and water are mixed according to the mass ratio of 1:25, keep The extraction temperature is 80°C, the microwave output power is 700W, and the stirring speed is 700r / min. The linseed gum is extracted with microwave-assisted hot water. After leaching for 50 minutes, the extraction mixture is put into a centrifuge tube, and after a little cooling, it is centrifuged at 4000r / min. After 25 minutes, collect the upper layer of mucus and the lower layer of linseed husks respectively; concentrate the upper layer of mucus under reduced pressure, control the amount of absolute ethanol added until the concentration of the ethanol solution in the solution is 70%, stir for alcohol precipitation, stand for 2 hours, and put the alcohol precipitation solution in Centrifuge at 4000r / min for 25min, take ...

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Abstract

The invention relates to a method for continuously extracting flaxseed gum and secoisolariciresinol diglucoside from flaxseed meal. The method comprises the following steps: 1) separation of shells and cores of flaxseeds: pulverizing and sieving flaxseed meal, and separately collecting upper-layer flaxseed shells and lower-layer flaxseed cores which are sieved; 2) extraction of flaxseed gum: taking the flaxseed shells as raw materials, and extracting the flaxseed gum with hot water in a microwave assisted manner; 3) extraction of secoisolariciresinol diglucoside: mixing and extracting the degummed flaxseed shells and an ethanol-sodium hydroxide solution to obtain coarse secoisolariciresinol diglucoside; and 4) purification of the secoisolariciresinol diglucoside: purifying the secoisolariciresinol diglucoside coarse product by using macroporous resin to obtain high-purity secoisolariciresinol diglucoside. The flaxseed gum and the secoisolariciresinol diglucoside are continuously extracted from the flaxseed meal, a new way for fully utilizing the flaxseed meal is provided, meanwhile, a convenient and speedy method for preparing various effective constituents of the flaxseeds is provided, flaxseed oil making by-products are utilized effectively, and the production cost of target products is reduced. The method has the advantages of low energy consumption, high product extractingrate, high economic benefit, low environment pollution and the like, and is suitable for large-scale production.

Description

technical field [0001] The invention relates to a method for extracting active ingredients from linseed dregs, in particular to a method for continuously extracting linseed gum and flax lignans from linseed dregs. Background technique [0002] Flax is an ancient and important oil crop. In 2013, my country's flaxseed production was about 400,000 tons, second only to Canada, ranking second in the world. After research, it was found that flaxseed contains a variety of nutrients, such as flaxseed oil (rich in omega-3 unsaturated fatty acids), protein, dietary fiber, etc. Flaxseed also contains many active ingredients with biological activity, including flaxseed gum , flax lignans, cyclic flax peptides, etc. [0003] Flaxseed gum exists in the flaxseed husk, accounting for about 8-10% of the weight of the flaxseed, and its main component is polysaccharide. Flax glue has a very strong emulsifying and thickening function, and can be used as a food additive in frozen products, me...

Claims

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Application Information

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IPC IPC(8): C07H15/18C07H1/08C08B37/00
Inventor 邓凤桂汪芳张震梁珊葛佳佳
Owner 广州利众生物科技有限公司
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