Carboxymethylated acanthopanax brachypus polysaccharide, synthesis and purification method and application of carboxymethylated acanthopanax brachypus polysaccharide serving as tobacco humectant

A technique of carboxymethylation of acanthus polysaccharides, applied in the application of tobacco humectants, carboxymethylation of brevi-stalked polysaccharides, synthesis and purification, to achieve cheap and easy-to-obtain reagents, significant industrial application value, and wide promotion The effect of applying the foreground

Inactive Publication Date: 2015-11-18
CHINA TOBACCO HENAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no relevant reports on the application of carboxymethylated

Method used

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  • Carboxymethylated acanthopanax brachypus polysaccharide, synthesis and purification method and application of carboxymethylated acanthopanax brachypus polysaccharide serving as tobacco humectant
  • Carboxymethylated acanthopanax brachypus polysaccharide, synthesis and purification method and application of carboxymethylated acanthopanax brachypus polysaccharide serving as tobacco humectant

Examples

Experimental program
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Embodiment 1

[0024] A method for the synthesis and purification of carboxymethylated brevicina polysaccharides, comprising the following steps: adding 16g of NaOH and 120mL of solvent (ionic liquid / water=1:1, mass ratio) into a three-necked flask, stirring at room temperature until the solution is clear , add 10g of refined Acanthopanax polysaccharide and stir vigorously for 20min until fully dissolved, then slowly add 16.2g of chloroacetic acid, stir and react at 60°C for 3h, cool to room temperature, adjust the pH value to 7 with dilute acetic acid, precipitate with alcohol, filter and collect precipitation.

[0025] The precipitate was dissolved with an appropriate amount of water, precipitated with 3 times the volume of 95% ethanol, and centrifuged at 4000r / m for 20min. The precipitate was collected again and dialyzed against running water using a dialysis bag. It was dialyzed with tap water for 24 hours, then with distilled water for 24 hours, and finally freeze-dried to obtain white...

Embodiment 2

[0028] A method for the synthesis and purification of carboxymethylated brevicina polysaccharides, comprising the following steps: adding 16g of NaOH and 120mL of solvent (ionic liquid / water=1:1, mass ratio) into a three-necked flask, stirring at room temperature until the solution is clear , add 10g of refined Acanthopanax polysaccharide and stir vigorously for 20min until fully dissolved, then slowly add 17.0g of chloroacetic acid, stir and react at 70°C for 4h, cool to room temperature, adjust the pH value to 7 with dilute acetic acid, precipitate with alcohol, filter and collect precipitation.

[0029] The precipitate was dissolved with an appropriate amount of water, precipitated with 3 times the volume of 95% ethanol, and centrifuged at 4000r / m for 20min. The precipitate was collected again and dialyzed against running water using a dialysis bag. It was dialyzed with tap water for 24 hours, then with distilled water for 24 hours, and finally freeze-dried to obtain white...

Embodiment 3

[0032] A method for synthesizing and purifying carboxymethylated brevicina polysaccharides, comprising the following steps: adding 16g NaOH and 120mL solvent (ionic liquid / water=1:1, mass ratio) to a three-necked flask, stirring the solution at room temperature to clarify, Add 10g of refined Acanthopanax polysaccharides and stir vigorously for 20 minutes until fully dissolved, then slowly add 16.6g of chloroacetic acid, stir and react at 80°C for 5 hours, cool to room temperature, adjust the pH value to 7 with dilute acetic acid, precipitate with alcohol, filter, and collect the precipitate .

[0033]The precipitate was dissolved with an appropriate amount of water, precipitated with 3 times the volume of 95% ethanol, and centrifuged at 4000r / m for 20min. The precipitate was collected again and dialyzed against running water using a dialysis bag. It was dialyzed with tap water for 24 hours, then with distilled water for 24 hours, and finally freeze-dried to obtain white cotto...

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Abstract

The invention relates to a synthesis and purification method of carboxymethylated acanthopanax brachypus polysaccharide. The method comprises steps as follows: acanthopanax brachypus polysaccharide and sodium hydroxide are added to a solvent and stirred to be dissolved, chloroacetic acid is added, the mixture is stirred at the temperature ranging from 60 DEG C to 80 DEG C and has a reaction for 3-5 h, a product is cooled, the pH (potential of hydrogen) value is adjusted to be neutral, ethanol precipitation and filtration are performed, precipitates are collected, the precipitates are dissolved with water and subjected to ethanol precipitation, dialysis and freeze drying, and carboxymethylated acanthopanax brachypus polysaccharide is obtained. A test proves that carboxymethylated acanthopanax brachypus polysaccharide has good physical and sensual moisture retention functions on cigarettes, irritation and offensive odor of the cigarettes can be reduced, mellowness and comfort of smoke of the cigarettes are improved, and carboxymethylated acanthopanax brachypus polysaccharide can serve as the high-performance tobacco humectant to be applied to the cigarettes.

Description

technical field [0001] The invention belongs to the technical field of humectant, and in particular relates to a carboxymethylated brevichorax polysaccharide, a synthesis and purification method and its application as a tobacco humectant. Background technique [0002] At present, polyhydroxy substances such as propylene glycol and sorbitol are mainly used as humectants in my country’s cigarette industry. The main purpose of using such humectants is to maintain the moisture content of shredded tobacco during processing and improve the processing resistance of shredded tobacco. Emollients are not ideal for maintaining the moisture content of finished cigarettes and improving smoking comfort. [0003] Polysaccharides are polymerized from a large number of monosaccharides, and a large number of hydroxyl groups form hydrogen bonds with water molecules, which have strong water holding capacity. Carboxymethylation of polysaccharides can not only improve their solubility, but also F...

Claims

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Application Information

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IPC IPC(8): C08B37/00A24B15/40
CPCY02P20/54
Inventor 陈芝飞芦昶彤孙志涛宋金勇郝辉
Owner CHINA TOBACCO HENAN IND
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