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A method for deesterifying water-soluble soybean polysaccharide and its product

A soybean polysaccharide, water-soluble technology, applied in the field of food processing, can solve the problems of slow production speed, high production cost, large-scale industrial production of enzymatic process, and achieve the effect of preventing equipment corrosion and overcoming environmental pollution

Active Publication Date: 2021-03-26
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The enzymatic deesterification process has the advantages of high deesterification efficiency, relatively simple production process and equipment, but the enzymatic deesterification process has high production costs, slow production speed and other shortcomings, so that the enzymatic process has not yet achieved large-scale industrial production

Method used

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  • A method for deesterifying water-soluble soybean polysaccharide and its product
  • A method for deesterifying water-soluble soybean polysaccharide and its product
  • A method for deesterifying water-soluble soybean polysaccharide and its product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The present embodiment provides a kind of water-soluble soybean polysaccharide (SSPS) deesterification process, adopts following process steps:

[0032] (1) Utilize magnesium nitrate hexahydrate to prepare magnesium nitrate solution, the mass ratio of magnesium nitrate hexahydrate to ultrapure water is 1:80, place the prepared solution under stirring and add ammonia water drop by drop until the solution is turbid, continue Keep stirring for 12-24 hours. Stop stirring and carry out suction filtration. The solid part obtained by suction filtration is roasted at 500°C for 5 hours to obtain a pure white solid, which is ground to powder to obtain the solid base catalyst MgO.

[0033] (2) Preparation of 5% SSPS extract: water-soluble soybean polysaccharide and ultrapure water were mixed according to the mass ratio of 1:20 to prepare a water-soluble soybean polysaccharide solution.

[0034] (3) Put the catalyst MgO in the SSPS solution to form a mixture and continue to stir t...

Embodiment 2

[0037] The present embodiment provides a kind of water-soluble soybean polysaccharide (SSPS) deesterification process, adopts following process steps:

[0038] (1) Utilize magnesium nitrate hexahydrate to prepare magnesium nitrate solution, the mass ratio of magnesium nitrate hexahydrate to ultrapure water is 1:80, place the prepared solution under stirring and add ammonia water drop by drop until the solution is turbid, continue Keep stirring for 12-24 hours; stop stirring and carry out suction filtration, and put the solid part obtained by suction filtration at 500°C for 5 hours to obtain a pure white solid, and grind it to powder to obtain the solid base catalyst MgO, the CO of MgO 2 - TPD test picture see figure 1 , CO 2 The total adsorption capacity is 0.352mmol / g.

[0039] (2) Preparation of 5% SSPS extract: water-soluble soybean polysaccharide and ultrapure water were mixed according to the mass ratio of 1:20 to prepare a water-soluble soybean polysaccharide solution....

Embodiment 3

[0043] The present embodiment provides a kind of water-soluble soybean polysaccharide (SSPS) deesterification process, adopts following process steps:

[0044] (1) Utilize magnesium nitrate hexahydrate to prepare magnesium nitrate solution, the mass ratio of magnesium nitrate hexahydrate to ultrapure water is 1:80, place the prepared solution under stirring and add ammonia water drop by drop until the solution is turbid, continue Keep stirring for 12-24 hours. Stop stirring and carry out suction filtration. The solid part obtained by suction filtration is roasted at 500°C for 5 hours to obtain a pure white solid, which is ground to powder to obtain the solid base catalyst MgO.

[0045] (2) Preparation of 5% SSPS extract: water-soluble soybean polysaccharide and ultrapure water were mixed according to the mass ratio of 1:20 to prepare a water-soluble soybean polysaccharide solution.

[0046] (3) Put the catalyst MgO in the SSPS solution to form a mixture and continue to stir t...

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Abstract

The invention discloses a water-soluble soybean polysaccharide degreasing method and a product thereof. The method comprises the following steps: preparing a solid base catalyst MgO; preparing a water-soluble soybean polysaccharide extract; and putting the solid alkali MgO into the water-soluble soybean polysaccharide extract, carrying out mixing and continuous stirring, transferring the obtainedsolution into a reaction kettle, heating to react for 1-7 h at the temperature of 80-120 DEG C, taking out the reacted solution, centrifuging at a high speed, taking the obtained supernatant, carryingout vacuum concentration, adding absolute ethyl alcohol of which the volume is 10-15 times that of the obtained concentrated solution into the obtained concentrated solution, centrifuging at 6500 r / min for 15min, taking the obtained precipitate, and drying the precipitate so as to obtain the degreased water-soluble soybean polysaccharide. The invention aims to reduce the defects of the soybean polysaccharide alkaline degreasing process, provides a novel SSPS degreasing process, reduces the esterification degree of SSPS, improves the actual utilization value of soybean polysaccharide, and overcomes the defects of SSPS with high esterification degree in the food industry.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a method for deesterifying water-soluble soybean polysaccharides and a product thereof. Background technique [0002] Water-soluble soybean polysaccharides (SSPS) is a water-soluble anionic polysaccharide extracted from soybeans. Numerous studies have shown that SSPS is rich in dietary fiber and has unique functional properties, such as being stable under acidic conditions. The ability to stabilize protein, good emulsification stabilizer, anti-starch adhesion and film-forming properties, so soybean polysaccharides are more and more widely used in the food industry. [0003] The methoxy group is the simplest alkoxy group, that is, the monovalent group after the hydrogen on the hydroxyl group in the methanol molecule is removed, and its structural expression is: CH 3 O—. In the polysaccharide molecular structure, the C-6 position of the D-galacturonic acid gro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00
CPCC08B37/00
Inventor 刘少聪陈洁徐姣崔红亮
Owner JIANGNAN UNIV
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