Preparation method of antibacterial polysaccharide

A polysaccharide and polysaccharide solution technology, applied in the field of antibacterial polysaccharide preparation, to achieve excellent antibacterial performance, convenient operation, and less demanding reaction conditions

Inactive Publication Date: 2018-08-17
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, there are few patents on the use of plasma to treat polysaccharides. For example, the patent "a low-temperature plasma degradation method for degrading polysaccharides into oligos

Method used

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  • Preparation method of antibacterial polysaccharide
  • Preparation method of antibacterial polysaccharide
  • Preparation method of antibacterial polysaccharide

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preparation example Construction

[0021] The invention proposes a method for preparing antibacterial polysaccharides, which uses atmospheric pressure plasma jet discharge to treat polysaccharide solutions to prepare antibacterial polysaccharides. Specifically, the polysaccharide is firstly dissolved in water to prepare a polysaccharide solution, and then the polysaccharide solution is subjected to atmospheric pressure plasma jet discharge treatment by using a plasma device to remove water to obtain an antibacterial polysaccharide.

[0022] Among them, the plasma device is mainly composed of a gas passage, a single-needle electrode, a voltage regulator and a processing container. For details, please refer to figure 1 , figure 1 It is a partial structural schematic diagram of the atmospheric pressure plasma jet discharge treatment system device used in the present invention.

[0023] During use, when the gas is compressed and passes through the gas channel 10 through the single needle electrode 12, the high pr...

Embodiment 1

[0029] Add 0.5g of sodium alginate powder into 99.5mL of water, heat to 60°C, stir magnetically for 2 hours until completely dissolved, and then let it stand for defoaming to obtain a sodium alginate solution with a mass concentration of 0.5%.

[0030] Take 50mL of sodium alginate solution and place it in the container, and adjust the position of the electrode to be 2-3mm above the liquid surface of the sodium alginate solution. The gas source is oxygen, and the gas valve is adjusted so that the gas flow rate is 30mL / min. The DC power supply is turned on and the voltage is set to 2000V, and the atmospheric pressure plasma jet discharge treatment is carried out for 60min to obtain a plasma-modified antibacterial polysaccharide solution.

Embodiment 2

[0032] Add 0.1 g of sodium carboxymethyl cellulose powder into 99.9 mL of water, heat to 60°C, stir magnetically for 2 hours until completely dissolved, and then let it stand for defoaming to obtain a 0.1% sodium carboxymethyl cellulose solution.

[0033] Take 50mL of sodium carboxymethyl cellulose solution and place it in a container, and adjust the position of the electrode to be 2 to 3 mm above the liquid surface of sodium carboxymethyl cellulose solution. The gas source is argon, the gas valve is adjusted, the flow rate is 10mL / min, the DC power is turned on and the voltage is set to 1000V, and the atmospheric pressure plasma jet discharge treatment is carried out for 20min to obtain a plasma modified antibacterial polysaccharide solution.

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Abstract

The invention discloses a preparation method of an antibacterial polysaccharide, and the method is as follows: dissolving a polysaccharide in water to prepare a polysaccharide solution, performing atmospheric pressure plasma jet discharge treatment on the polysaccharide solution, and then removing water to obtain the antibacterial polysaccharide. Through the above manner, the preparation method ofthe antibacterial polysaccharide has the advantages of convenient operation, simple process, low requirements on reaction conditions, no chemical reagents in the whole process, no pollution to the environment, low cost, large processing capacity, and high recovery rate.

Description

technical field [0001] The invention relates to the technical field of polysaccharide preparation, in particular to a preparation method of antibacterial polysaccharide. Background technique [0002] Common daily polysaccharides include plant polysaccharides, marine polysaccharides, animal polysaccharides, bacterial polysaccharides, etc., including starch, cellulose, sodium carboxymethylcellulose, glucose, sodium alginate, agarose, carrageenan, chitosan, etc. . However, there are only a few polysaccharides with antibacterial effects such as chitosan. [0003] In recent years, with the enhancement of people's health awareness and the improvement of food quality requirements, adding excessive chemical preservatives to food to prolong the shelf life is becoming less and less accepted by people. By modifying edible polysaccharides, endowing them with antibacterial properties, and applying them in food processing, cosmetics production, medical dressings, packaging materials pro...

Claims

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Application Information

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IPC IPC(8): C08B37/04C08B11/12C08B31/00C08B37/12C08B37/06C08B37/00
CPCC08B11/12C08B31/00C08B37/0039C08B37/0084
Inventor 王喆高明韦宗伟户帅锋黄逸凡王怀雨
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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