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Synthesis method for anti-staphylococcus aureus double-activity gallic acid-sulfated bagasse xylan

A technology based on gallic acid and staphylococcus, which is applied in the direction of microorganism-based methods, biochemical equipment and methods, and microorganism measurement/inspection. It can solve the problems of insufficient anti-biological activity and achieve broad application prospects.

Inactive Publication Date: 2015-05-13
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a synthetic method of anti-Staphylococcus aureus double-active gallic acid-sulfated bagasse xylan in order to overcome the problem that current xylan sulfate is insufficient in antibiological activity

Method used

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  • Synthesis method for anti-staphylococcus aureus double-activity gallic acid-sulfated bagasse xylan
  • Synthesis method for anti-staphylococcus aureus double-activity gallic acid-sulfated bagasse xylan
  • Synthesis method for anti-staphylococcus aureus double-activity gallic acid-sulfated bagasse xylan

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Experimental program
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Effect test

Embodiment 1

[0049] (1) Weigh 3.0 g of bagasse xylan and dry it in a vacuum oven at 60° C. to constant weight to obtain dry basis bagasse xylan.

[0050] (2) Add 30 mL of ethanol solution with a mass fraction of 60% into a 250 mL four-neck flask, and install a stirrer and a reflux condenser.

[0051] (3) Add 0.5 g of ammonium sulfate to the resultant of step (2), and dissolve it under stirring to obtain an ethanol solution of ammonium sulfate.

[0052] (4) Add 2.5 g of bagasse xylan obtained in step (1) to the ammonium sulfate ethanol solution obtained in step (3), and stir evenly at a temperature of 25° C.

[0053] (5) Control the reaction temperature to be 10°C, add 3mL of concentrated sulfuric acid with a mass fraction of 98% dropwise to the mixed solution obtained in step (4) under stirring, control the dropwise addition within 30 minutes, and continue to React for 3 hours.

[0054] (6) Pour the mixture in step (5) into a beaker, add 10 mL of absolute ethanol to it, and precipitate o...

Embodiment 2

[0072] (1) Weigh 5.0 g of bagasse xylan and dry it in a vacuum oven at 60° C. to constant weight to obtain dry basis bagasse xylan.

[0073] (2) Add 50mL of absolute ethanol solution into a 250mL four-neck flask, and install a stirrer and a reflux condenser.

[0074] (3) Add 2.0 g of ammonium sulfate to the resultant of step (2), and dissolve it under stirring to obtain an ethanol solution of ammonium sulfate.

[0075] (4) Add 4.0 g of bagasse xylan obtained in step (1) to the ammonium sulfate ethanol solution obtained in step (3), and stir evenly under the condition that the temperature is 10-50° C.

[0076] (5) Control the reaction temperature to be 0°C, add 10mL of concentrated sulfuric acid with a mass fraction of 98% dropwise to the mixed solution obtained in step (4) under stirring, control the dropwise addition within 50 minutes, and continue after the dropwise addition React for 6 hours.

[0077] (6) Pour the mixture in step (5) into a beaker, add 20 mL of absolute e...

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Abstract

The invention discloses a synthesis method for an anti-staphylococcus aureus double-activity gallic acid-sulfated bagasse xylan. The synthesis method comprises the following steps: first, performing sulfating on bagasse xylan in an ethanol solvent by taking concentrated sulfuric acid as an esterifying agent to obtain bagasse xylan sulphate; then, performing secondary esterification on the bagasse xylan by taking gallic acid which is subjected to acylchloriration reaction, namely triacetyl gallic acid acyl chloride, as the esterifying agent to obtain the anti-staphylococcus aureus double-activity gallic acid-sulfated bagasse xylan. The anti-staphylococcus aureus performance of the target product obtained by the synthesis method is greatly improved compared with that of the bagasse xylan sulphate; the anti-staphylococcus aureus double-activity gallic acid-sulfated bagasse xylan has a wide application prospect in the field of medicaments and food.

Description

technical field [0001] The invention relates to a synthesis method of anti-staphylococcus aureus double-active gallic acid-sulfated bagasse xylan. Background technique [0002] Xylan is an abundant biomass resource, which widely exists in plant cells and is the main component of hemicellulose. Its structure is a poly-five-carbon sugar linked by β-D-1,4 xylosidic bonds with various substituents. In recent years, due to the increase in demand for fossil energy and the reduction of fossil energy, more and more scientific researchers have turned to the development and utilization of renewable bio-energy. As a renewable biological resource with abundant sources, xylan has aroused the interest of domestic and foreign scholars in its chemical modification due to its good biocompatibility, non-toxicity and biodegradability. After chemical modification such as cross-linking, grafting, esterification and amination, xylan can be used in chemical industry, medicine, food, environment ...

Claims

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Application Information

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IPC IPC(8): C08B37/14C12Q1/18C12R1/445
Inventor 李和平武冠亚袁金伟杨旭杨官威孙彦邹英东
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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