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Method for extracting water-soluble soybean polysaccharide from soya bean waste and soybean dregs

A soybean polysaccharide and water-soluble technology is applied in the field of extracting water-soluble soybean polysaccharides, which can solve the problems of low product purity and poor color, and achieve the effects of good color and improved extraction rate.

Inactive Publication Date: 2010-06-16
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The extraction rate is only 7%, and the method has not gone through a degreasing step, and the product has not been properly post-treated, and the product has low purity and poor color

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 100 grams of bean dregs, add 1500 grams of petroleum ether, extract in a Soxhlet fat extractor for 1 hour, filter under reduced pressure to obtain a filter cake, bake at 60° C. for 1 hour, and weigh 95 grams.

[0021] Gained filter cake is mixed with 1140 grams of 13%NaOH (mass fraction) solution, in 50 ℃ of water-baths, constantly stirring and extracting 45 minutes, filter under reduced pressure to obtain filter cake 125g; The concentration of the sodium oxide solution was 10% (mass fraction), the consumption was 1250 grams, the extraction time was 30 minutes, and 150 grams of filter cake was obtained by filtration under reduced pressure.

[0022] Add 1500 mL of water to the filter cake obtained in the previous step, adjust the pH value to 4 with hydrochloric acid, heat to 80° C. for 60 minutes, and filter under reduced pressure to obtain 1480 mL of filtrate.

[0023] Add 8 grams of activated carbon to the above filtrate for decolorization, adjust the pH value to...

Embodiment 2

[0027] Weigh 100 grams of soybean meal, add 1000 grams of petroleum ether, extract in a Soxhlet fat extractor for 1 hour, filter under reduced pressure to obtain a filter cake, bake at 60° C. for 1 hour, and weigh to obtain 100 grams.

[0028] Gained filter cake is mixed with 1200 grams of 13%NaOH (mass fraction) solution, is continuously stirred and extracted in 60 ℃ of water baths for 45 minutes, filter under reduced pressure to obtain filter cake 130 grams; Filter cake is carried out secondary deproteinization, when secondary deproteinization The concentration of sodium hydroxide solution is 10% (mass fraction), and consumption is 1300 grams, and extraction time is 30 minutes, and filter under reduced pressure to obtain filter cake 160 grams.

[0029] Add 3000ml of water to the filter cake obtained in the previous step, adjust the pH value to 3 with hydrochloric acid, heat to 120°C, the reaction time is 90 minutes, and filter under reduced pressure to obtain 2860ml of filtra...

Embodiment 3

[0034] Weigh 100 grams of soybean meal, add 1500 grams of petroleum ether, extract in a Soxhlet fat extractor for 1 hour, filter under reduced pressure to obtain a filter cake, bake at 60 ° C for 1 hour, and weigh 95 grams.

[0035] Gained filter cake is mixed with 1140 grams of 13%NaOH (mass fraction) solution, in 60 DEG C of water baths, constantly stirring and extracting 45 minutes, decompression filtration obtains 125 grams of filter cakes; The concentration of sodium hydroxide solution is 10% (mass fraction), and consumption is 1250 grams, and extraction time is 30 minutes, and filter under reduced pressure to obtain filter cake 150 grams.

[0036] Add 1500 mL of water to the filter cake obtained in the previous step, adjust the pH value to 8 with hydrochloric acid, heat to 60° C. for 90 minutes, and filter under reduced pressure to obtain 1480 mL of filtrate.

[0037] Add 15 grams of activated carbon to the above filtrate for decolorization, adjust the pH value to 7.0, t...

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Abstract

The invention discloses a method for extracting water-soluble soybean polysaccharide from bean pulp and bean dregs, which comprises the steps as follows: petroleum ether degreasing, NaOH quadratic deproteinization, polysaccharide extraction with acid or alkali, active carbon decoloration, vaccum concentration, ethanol sedimentation and dryness and other steps. The method adopts the petroleum etherdegreasing and the alkali deproteinization steps to implement pretreatment to the bean pulp and bean dregs, firstly most fattiness and protein in the material are removed, and then the water-solublesoybean polysaccharide is extracted by adopting optimized extraction condition, finally the active carbon decoloration and other crafts are implemented on the extractive. The invention has the advantages that: the extraction rate of the water-soluble soybean polysaccharide and the purity of the product can be improved greatly, and the color and lustre of the product is good.

Description

technical field [0001] The invention relates to a polysaccharide extraction process, in particular to a method for extracting water-soluble soybean polysaccharides from soybean meal and bean dregs. Background technique [0002] Water-soluble soybean polysaccharide is a water-soluble polysaccharide extracted from soybeans. It is also called water-soluble soybean dietary fiber because of its high content of dietary fiber. Soybean polysaccharides have good physical and chemical properties and are widely used in the field of food additives. [0003] Water-soluble soybean polysaccharide can stabilize the suspended particles in the protein beverage system. Its aqueous solution has low viscosity and can be used as a high-quality stabilizer in acidic beverages, whey beverages and other products. It can also be used as a supplement while stabilizing suspended particles. Functional raw material of dietary fiber; soybean polysaccharides can also be used as water retention, shape reten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00
Inventor 孟岳成张学兵
Owner ZHEJIANG GONGSHANG UNIVERSITY