Soluble amidated soybean polysaccharide and preparation method thereof

A soybean polysaccharide and soluble technology, which is applied in the field of soluble amidated soybean polysaccharide and its preparation, can solve the problems of poor suspension and stability of soluble soybean polysaccharide, and achieve the effects of improving suspension and stability, combining firmly, and improving stability

Inactive Publication Date: 2018-12-11
宋鸣宇
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a soluble amidated soybean polysaccharide and its prepa

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  • Soluble amidated soybean polysaccharide and preparation method thereof
  • Soluble amidated soybean polysaccharide and preparation method thereof
  • Soluble amidated soybean polysaccharide and preparation method thereof

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preparation example Construction

[0033] In another typical embodiment of the present application, a preparation method of soluble amidated soybean polysaccharide is provided, the preparation method comprising: using an alcoholic ammonia solution to perform amidation treatment on the soluble soybean polysaccharide, so that the main soluble soybean polysaccharide Part of the methoxy groups in the chain structure are substituted with amido groups to obtain soluble amidated soybean polysaccharides.

[0034] As the name implies, the above alcohol ammonia solution refers to the aqueous solution of ammonia and alcohol.

[0035] In the process of ammonia deesterification, when the amide group replaces the methoxy group on the main chain of soybean polysaccharide, it also effectively inhibits the β-elimination reaction that may also occur at the same time, that is, the β that affects the quality and performance of soybean polysaccharide - The elimination reaction is controlled to a small extent. Therefore, compared w...

Embodiment 1

[0060] Preparation of Alkaline Extraction Soluble Soybean Polysaccharide:

[0061]Take 100 kg of dried bean dregs and put them into the reactor, then add 2000 kg of normal water and 3 kg of disodium ethylenediaminetetraacetate to the reactor in turn, adjust the pH to 12.38 with sodium hydroxide, then raise the temperature to 130°C, and keep stirring The temperature was maintained at a constant temperature for 120 minutes. After the reaction, the reaction product in the reactor was separated from solid and liquid by a horizontal spiral sedimentation centrifuge to obtain 1900 kg of extract. Add nitric acid solution in the extract to adjust the pH value of the extract to 4.5, then add 50 kilograms of diatomaceous earth to the extract, stir for 30 minutes, filter by plate and frame filter press, obtain 1850 kilograms of filtrate, and the pH of the filtrate is 4.5. The obtained filtrate is vacuum-concentrated through a three-effect concentrator. The vacuum degree of the three-effe...

Embodiment 2

[0063] Preparation of acid-extracted soluble soybean polysaccharides:

[0064] Take 100 kg of dry bean curd and put it into the reaction tank, then add 2000 kg of normal water and 4 kg of sodium hexametaphosphate to the reaction kettle in turn, adjust the pH to 2.5 with hydrochloric acid, raise the temperature to 120 °C, and keep the constant temperature at 180 °C while stirring continuously. After the reaction, the reaction product in the reactor was separated from solid and liquid by a horizontal spiral decanter centrifuge to obtain 1950 kg of extract. Add sodium hydroxide to the extract to adjust the pH to 4.4, then add 60 kg of diatomaceous earth to the extract, stir for 30 minutes, and filter through a plate and frame filter to obtain 1900 kg of filtrate with a pH of 4.4. The obtained filtrate is vacuum-concentrated through a three-effect concentrator. The vacuum degree of the three-effect concentrator is 0.08MPa, and the vapor pressure is 0.15MPa; The temperature was 65...

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Abstract

The invention provides a soluble amidated soybean polysaccharide and a preparation method thereof, wherein the soluble amidated soybean polysaccharide has a soluble soybean polysaccharide main chain structure, and the methoxy group in the main chain structure is partially substituted with the amide group. With the technical scheme, the methoxy group in the main chain structure is partially substituted with the amide group to make the main chain structure have the amide group, the amide group introduced through the amidation can improve the stability, and mainly the amide group can help the formation of the hydrogen bond, such that the combination of soybean polysaccharide and casein is stable so as to improve the suspension and the stability. According to the present invention, the methoxygroup in the soybean polysaccharide main chain is substituted with the amide group while the beta-elimination reaction possibly occurring is effectively suppressed so as to control the beta-elimination reaction affecting the quality and the performance of the soybean polysaccharide at a small degree; and the soluble amidated soybean polysaccharide can exhibit good protein stability performance even in the case of the low addition amount.

Description

technical field [0001] The invention relates to the processing field of soybean polysaccharides, in particular to a soluble amidated soybean polysaccharide and a preparation method thereof Background technique [0002] my country is one of the main countries that process soybeans in the world. Soybean seed coat contains a lot of pectin polysaccharides. Soluble Soybean Polysaccharides (SSPS) is a water-soluble pectin polysaccharide extracted from soybean seed coat or okara. Soluble soybean polysaccharide has a variety of biological activities and is a natural functional ingredient. It can improve the food quality, processing characteristics and appearance characteristics of food. It can be used to inhibit lipid oxidation and stabilize protein in acidic beverages. It can also be used as Emulsifying ingredients in food. Therefore, it has broad application prospects in food. [0003] Soybean protein isolate is a relatively high-scale product of modern soybean processing, whic...

Claims

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Application Information

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IPC IPC(8): C08B37/00
CPCC08B37/0045
Inventor 宋鸣宇
Owner 宋鸣宇
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