CN101838406B - Method for simultaneously extracting and separating flaxseed gum and SDG (Secoisolariciresinol Diglucoside) from flaxseeds - Google Patents

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 relative density 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

The method of while extraction separation flaxseed gum and secoisolariciresinol diglycoside from linseed oil

Technical field

The present invention relates to the method for extracting effective components from linseed oil, relate in particular to from linseed oil the method for extraction separation flaxseed gum and secoisolariciresinol diglycoside simultaneously.

Background technology

Flax (Linum usitatissim um L.) is one of important oil crops of China.Linseed oil also contains higher food fiber, mineral substance, nutritive ingredient such as support one's family rope A, B, D, E and phenolic acids, flavonoid, phytic acid class, Yelkin TTS except that containing abundant grease and protein.Because linseed oil is rich in indispensable fatty acid (EFA ' S)---alpha-linolenic acid (LNA) and linolic acid, and these two kinds of lipid acid naturally than relatively being fit to the mankind again, so linseed oil is considered to the best that the mankind obtain indispensable fatty acid always and originates.

But discovering in recent years also contained a kind of composition---lignan of having very much a potentiality to be exploited in the linseed oil.Lignan is a kind of physiologically active substance that is present in the linseed oil kind skin, and its structure and human body oestrogenic hormon are quite similar, are considered to a kind of phytoestrogen; It is the styryl carbinol that is obtained by phenylalanine, the natural components that bimolecular is polymerized.Lignan causes the very big interest of people as a kind of phytoestrogen, mainly is because it is proved to be and has antitumor nucleus formation, oestrogenic hormon and estrogen antagonist effect, suppresses aromatase activity, suppresses DNA and RNA is synthetic, antiviral, the characteristic of fungi etc.Studies show that, all contain lignan in many cereal, but content is the highest in the linseed oil.Secoisolariciresinol diglycoside secoisolarciresinol diglucoside (SDG), the content in linseed oil are about 1～4% (W/W), and its content exceeds 75～800 times than other 66 kinds of food.

In addition, the flax glue that extracts from linseed oil is a kind of new type natural edible gum, and it is to be the natural polymer composite gum of main component with polysaccharose substance and protein, natural thickener.

At present, prior art mostly is aqueous alcoholic extraction secoisolariciresinol diglycoside from flax seed degreased dreg, or extracts flaxseed gum more separately extract secoisolariciresinol diglycoside from linseed oil after, but these production technique are all more loaded down with trivial details, energy dissipation is also bigger.

China is the big producing country of flax, therefore, how to bring into play the function of linseed oil largely, and the comprehensive utilization linseed oil improves added value of product, realizes that large-scale industrial production is significant.

Summary of the invention

Technical problem to be solved by this invention provides a kind of technology while extraction separation flaxseed gum from linseed oil simple, with low cost and the method for secoisolariciresinol diglycoside.

For addressing the above problem, of the present invention a kind of from linseed oil the method for extraction separation flaxseed gum and secoisolariciresinol diglycoside simultaneously, may further comprise the steps:

(1) linseed oil is added stir under 10～70 ℃ of temperature behind the water and extract for several times, decoction liquor filters, merging filtrate; Wherein each amount of water is 8～12 times of linseed oil quality;

(2) under 40～70 ℃ of temperature, be 1.12～1.18 clear cream with the filtrate of described step (1) gained through being evaporated to relative density;

(3) adding ethanol in described clear cream makes it contain the alcohol amount to reach 30%～95%, stir, and at room temperature leave standstill 24～48h, obtain throw out after filtering;

(4) described throw out promptly gets flax glue after washing, filtration, drying, pulverizing; Obtain washing lotion and filtrate simultaneously;

(5) washing lotion of described step (4) gained, filtrate are merged, decompression recycling ethanol under 40～70 ℃ of temperature, and to be concentrated into relative density be 1.08～1.23 clear cream; Promptly get secoisolariciresinol diglycoside after this clear cream drying, the pulverizing.

The present invention compared with prior art has the following advantages:

1, because the present invention can extract secoisolariciresinol diglycoside and flaxseed gum simultaneously from linseed oil, therefore, reduced production cost effectively, special suitability for scale production.

2, owing to solvent for use among the present invention is water and ethanol, and extract under relatively low temperature, therefore, not only technology is simple, and safe without toxic side effect.

Embodiment

1 one kinds of the embodiment method of extraction separation flaxseed gum and secoisolariciresinol diglycoside simultaneously from linseed oil may further comprise the steps:

(1) the 300kg linseed oil is added puts into the Wuxi behind the water and avenge the 2000L reactor that unrestrained chemical industry equipment factory produces, under 10～30 ℃ of temperature, stir 1～2h, open the 10m that filter plant company limited produces greatly with Shanghai then ²Flame filter press filters, and filter residue filters merging filtrate after extracting for several times with method to decoction liquor; Wherein each amount of water is 8 times of linseed oil quality.

(2) to be evaporated to relative density be 1.12～1.18 clear cream to the 20L Rotary Evaporators that the filtrate of step (1) gained is adopted Jiangsu Xing Hai Instrument and Equipment Company produce under 40～50 ℃ of temperature.

(3) adding ethanol in clear cream makes it contain the alcohol amount to reach 30%～95%, stir, and at room temperature leave standstill 24～48h, obtain the 30kg throw out after filtering;

(4) throw out adopts 10L ethanol (volumetric concentration is 95%) washing after-filtration, the vacuum drying oven that adopts Changzhou Dare pine pressurized vessel company limited to produce again, pressure 0.04～-pulverize behind dry 2～6h under the condition of 40～70 ℃ of 0.08Mpa, temperature, promptly get the 15kg flax glue; Obtain 9kg washing lotion and 600kg filtrate simultaneously;

(5) washing lotion of step (4) gained, filtrate are merged, under 40～50 ℃ of temperature, adopt 20L Rotary Evaporators decompression recycling ethanol, and to be concentrated into relative density be 1.08～1.23 clear cream; Promptly get the 10kg secoisolariciresinol diglycoside after the spray-dried or microwave vacuum drying of this clear cream, the pulverizing.

2 one kinds of the embodiment method of extraction separation flaxseed gum and secoisolariciresinol diglycoside simultaneously from linseed oil may further comprise the steps:

(1) the 300kg linseed oil is added put into the Wuxi behind the water and avenge the 2000L reactor that unrestrained chemical industry equipment factory produces, stir 1～2h under 30～50 ℃ of temperature, use flame filter press then, filter, filter residue filters merging filtrate after extracting for several times with method to decoction liquor; Wherein each amount of water is 12 times of linseed oil quality.

(2) filtrate of step (1) gained being adopted the 20L Rotary Evaporators be evaporated to relative density under 50～60 ℃ of temperature is 1.12～1.18 clear cream.

(3) adding ethanol in clear cream makes it contain the alcohol amount to reach 30%～95%, stir, and at room temperature leave standstill 24～48h, obtain the 35kg throw out after filtering;

(4) throw out adopts 12L ethanol (volumetric concentration is 95%) washing after-filtration, adopts vacuum drying oven again, pressure 0.04～-pulverize behind dry 2～6h under the condition of 40～70 ℃ of 0.08Mpa, temperature, promptly get the 17kg flax glue; Obtain 11kg washing lotion and 600kg filtrate simultaneously;

(5) washing lotion of step (4) gained, filtrate are merged, under 50～60 ℃ of temperature, adopt 20L Rotary Evaporators decompression recycling ethanol, and to be concentrated into relative density be 1.08～1.23 clear cream; Promptly get the 11kg secoisolariciresinol diglycoside after the spray-dried or microwave vacuum drying of this clear cream, the pulverizing.

3 one kinds of the embodiment method of extraction separation flaxseed gum and secoisolariciresinol diglycoside simultaneously from linseed oil may further comprise the steps:

(1) the 300kg linseed oil is added put into the Wuxi behind the water and avenge the 2000L reactor that unrestrained chemical industry equipment factory produces, stir 1～2h under 50～70 ℃ of temperature, use flame filter press then, filter, filter residue filters merging filtrate after extracting for several times with method to decoction liquor; Wherein each amount of water is 10 times of linseed oil quality.

(2) filtrate of step (1) gained being adopted the 20L Rotary Evaporators be evaporated to relative density under 60～70 ℃ of temperature is 1.12～1.18 clear cream.

(3) adding ethanol in clear cream makes it contain the alcohol amount to reach 30%～95%, stir, and at room temperature leave standstill 24～48h, obtain the 40kg throw out after filtering;

(4) throw out adopts 15L ethanol (volumetric concentration is 95%) washing after-filtration, adopts vacuum drying oven again, pressure 0.04～-pulverize behind dry 2～6h under the condition of 40～70 ℃ of 0.08Mpa, temperature, promptly get the 20kg flax glue; Obtain 14kg washing lotion and 600kg filtrate simultaneously;

(5) washing lotion of step (4) gained, filtrate are merged, under 60～70 ℃ of temperature, adopt 20L Rotary Evaporators decompression recycling ethanol, and to be concentrated into relative density be 1.08～1.23 clear cream; Promptly get the 12kg secoisolariciresinol diglycoside after the spray-dried or microwave vacuum drying of this clear cream, the pulverizing.

Claims (1)

1. method of extraction separation flaxseed gum and secoisolariciresinol diglycoside simultaneously from linseed oil may further comprise the steps:

(1) puts into the 2000L reactor after the 300kg linseed oil is added water, under 10～30 ℃ of temperature, stir 1～2h, use 10m then ²Flame filter press filters, and filter residue filters merging filtrate after extracting for several times with method to decoction liquor; Wherein each amount of water is 8 times of linseed oil quality;

(2) filtrate of step (1) gained being adopted the 20L Rotary Evaporators be evaporated to relative density under 40～50 ℃ of temperature is 1.12～1.18 clear cream;

(3) adding ethanol in clear cream makes it contain the alcohol amount to reach 30%～95%, stir, and at room temperature leave standstill 24～48h, obtain the 30kg throw out after filtering;

(4) to adopt 10L, volumetric concentration be 95% washing with alcohol after-filtration to throw out, adopts vacuum drying oven again, pressure 0.04～-pulverize behind dry 2～6h under the condition of 40～70 ℃ of 0.08Mpa, temperature, promptly get the 15kg flax glue; Obtain 9kg washing lotion and 600kg filtrate simultaneously;

(5) washing lotion of step (4) gained, filtrate are merged, under 40～50 ℃ of temperature, adopt 20L Rotary Evaporators decompression recycling ethanol, and to be concentrated into relative density be 1.08～1.23 clear cream; Promptly get the 10kg secoisolariciresinol diglycoside after the spray-dried or microwave vacuum drying of this clear cream, the pulverizing.