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Method for de-coloring soybean polysaccharide

A soybean polysaccharide and decolorization technology, which is applied in the field of food additives, can solve the problems of low decolorization efficiency, high protein impurities, and product quality decline, and achieves the effect of good pigment removal effect, simplified treatment process and less impurity protein content.

Active Publication Date: 2011-07-27
GUANGZHOU FOBIBER BIOLOGICAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acid-base precipitation method is to remove the pigment according to the solubility of the pigment in different pH solvents. Although the process is relatively simple and the cost is low, the effect is not obvious
The decolorization of activated carbon is to use its physical adsorption capacity. The pigment has a conjugated double bond structure and can be adsorbed by activated carbon. However, the viscosity of soybean polysaccharide molecules and solutions are relatively large. When using activated carbon for decolorization, the activated carbon target The number requirements are high. When granular activated carbon is used for decolorization, the decolorization effect is not obvious, and the soybean polysaccharide liquid still has obvious yellowish brown; if powdered activated carbon is used for decolorization, the viscosity of soybean polysaccharide liquid is too high, and the decolorization efficiency is low. , and the decolorized polysaccharide liquid also has a certain amount of pigment and is slightly yellow
[0004] Both of the above two processes cannot fully remove organic impurities such as free protein and pigment in the soybean polysaccharide liquid, so the final product obtained contains a lot of protein impurities, resulting in a decrease in yield and a decline in product quality, which inevitably leads to economic losses. waste

Method used

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  • Method for de-coloring soybean polysaccharide

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Effect test

Embodiment 1

[0031] The decolorization treatment of embodiment 1 ion exchange resin

[0032] The soybean okara of the present embodiment is commercially available.

[0033] Take 600 g of MN200 ultra-large mesh anion exchange resin (commercially available), pretreat it with sodium hydroxide, and then pack it into a column. The aspect ratio of the ion column is 5:1.

[0034] In this embodiment, ion exchange resin is used to decolorize soybean polysaccharide extract, and the specific steps are as follows:

[0035] (1) After adding water to soybean dregs and fully stirring for half an hour, centrifuge to remove the supernatant, add water to the centrifuged sediment to adjust the pH value of the whole system to 5.0 (when the pH of the system is adjusted to 5.0, it is helpful for the cellulase Reaction), adding cellulase for enzyme treatment, the time is 1h. After the enzyme treatment step, adjust the pH value of the whole system to 8.0, adjust the temperature to 100-100°C, and keep it for 1.5...

Embodiment 2

[0038] The decolorization treatment of embodiment 2 ion exchange resins

[0039] The soybean okara of the present embodiment is commercially available.

[0040] Take 600 g of A850 ion-exchange resin produced by Brilliant (China) Co., Ltd., pretreat it with sodium hydroxide, and then pack it into a column. The height-to-diameter ratio of the ion column is 7:1.

[0041] In this embodiment, ion exchange resin is used to decolorize soybean polysaccharide extract, and the specific steps are as follows:

[0042] (1) After adding water to the soybean dregs and stirring thoroughly for half an hour, centrifuge to remove the supernatant, add water to the centrifuged sediment to adjust the pH of the whole system to 5.0, and add cellulase for enzyme treatment for 1 hour. After the enzyme treatment step, adjust the pH value of the whole system to 8.0, adjust the temperature to 100-100°C, and keep it for 1.5h for heat extraction to obtain soybean polysaccharide extract;

[0043] (2) Get a...

Embodiment 3

[0045] The decolorization treatment of embodiment 3 gac

[0046] The soybean okara of the present embodiment is commercially available.

[0047] In this embodiment, activated carbon is used to decolorize the soybean polysaccharide extract, and the specific steps are as follows:

[0048] (1) After adding water to the soybean dregs and stirring thoroughly for half an hour, centrifuge to remove the supernatant, add water to the centrifuged sediment to adjust the pH of the whole system to 5.0, and add cellulase for enzyme treatment for 1 hour. After the enzyme treatment step, adjust the pH value of the whole system to 8.0, adjust the temperature to 100-100°C, and keep it for 1.5h for heat extraction to obtain soybean polysaccharide extract;

[0049] (2) Get the above-mentioned soybean polysaccharide extract 500ml and pass through the diatomite layer, the consumption of diatomite is 5g, then it is decolorized with activated granular activated carbon, the consumption of granular ac...

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Abstract

The invention discloses a method for de-coloring soybean polysaccharide, particularly a method for de-coloring the extract of soybean polysaccharide by ion exchange resin. The method comprises the following concrete steps: (1) preparing soybean extract; and (2) allowing the soybean extract to pass through a diatomite layer, further conducting the ion exchange chromatography on the soybean extractby using ion exchange columns, and drying to obtain the required soybean polysaccharide. By de-coloring the extract of soybean polysaccharide by the ion exchange resin, the invention can remove the pigment and organic impurities in soybean polysaccharide; the obtained soybean polysaccharide has the advantages of pure-white and fine color, low protein content and high purity; in addition, by de-coloring the extract of soybean polysaccharide by ion exchange resin, the invention can further simplify the treatment procedure, specifically, the good de-coloring effect can be achieved by only passing through the ion exchange columns; and the content of impurities in the product is low as the spray-drying process is adopted.

Description

technical field [0001] The invention relates to the technical field of food additives, in particular to soybean polysaccharides, in particular to a method for decolorizing soybean polysaccharides. Background technique [0002] Soybeans are rich in nutrients, and soybeans or products made from soybeans have been eaten in our country since ancient times. Soybean Polysaccharide (Soybean Polysaccharide) is a water-soluble polysaccharide extracted and refined from soybeans. It has the function of preventing protein aggregation and precipitation in an acidic environment (PH≤4.0), protecting the protein without increasing the viscosity of the system, and making the product With a refreshing taste, soybean polysaccharides can not only be used as a high-quality stabilizer in products such as acidic beverages and whey beverages, but also can be used as functional raw materials to supplement dietary fiber. [0003] At present, the production of soybean polysaccharides is not yet scale...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00A23L1/277A23L1/03A23L1/30A23L33/105
Inventor 李小林何莹汪东华
Owner GUANGZHOU FOBIBER BIOLOGICAL IND CO LTD
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