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Carboxymethylation lentinan, synthesis and purification method and application of carboxymethylation lentinan serving as tobacco humectant

A carboxymethylated shiitake mushroom and humectant technology, which is applied in the application of tobacco humectant, carboxymethylated lentinan, synthesis and purification fields, has achieved significant industrial application value, broad promotion and application prospects, and obvious moisturizing effect Effect

Active Publication Date: 2015-12-16
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 lentinan as a tobacco humectant in cigarettes at home and abroad

Method used

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  • Carboxymethylation lentinan, synthesis and purification method and application of carboxymethylation lentinan serving as tobacco humectant
  • Carboxymethylation lentinan, synthesis and purification method and application of carboxymethylation lentinan serving as tobacco humectant

Examples

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Effect test

Embodiment 1

[0022] A synthesis and purification method of carboxymethylated lentinan, comprising the following steps: adding 14.0g NaOH and 120mL solvent (ionic liquid / water=1.4:1, mass ratio) into a three-necked flask, stirring at room temperature until the solution is clear, adding Stir 10g of lentinan vigorously for 20min until fully dissolved, then slowly add 16.0g of chloroacetic acid, stir and react at 60°C for 3.5h, cool to room temperature, adjust the pH to 7 with dilute acetic acid, precipitate with alcohol, filter, and collect the precipitate.

[0023] 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. First dialyze with tap water for 24 hours, then dialyze with distilled water for 24 hours, and finally freeze-dry to obtain white cotton-like carboxymethylated mushroom crude polysacc...

Embodiment 2

[0026] A method for synthesizing and purifying carboxymethylated lentinan, comprising the following steps: adding 16.0g NaOH and 120mL solvent (ionic liquid / water=1.4:1, mass ratio) to a three-necked flask, stirring at room temperature until the solution is clear, adding Stir 10g of lentinan vigorously for 30min until fully dissolved, then slowly add 16.4g of chloroacetic acid, stir and react at 70°C for 4h, cool to room temperature, adjust the pH to 7 with dilute acetic acid, precipitate with alcohol, filter, and collect the precipitate.

[0027] 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. First dialyze with tap water for 24 hours, then dialyze with distilled water for 24 hours, and finally freeze-dry to obtain white cotton-like carboxymethylated mushroom crude polysacchar...

Embodiment 3

[0030] A synthesis and purification method of carboxymethylated lentinan, comprising the following steps: adding 18.0g NaOH and 120mL solvent (ionic liquid / water=1.4:1, mass ratio) to a three-necked flask, stirring at room temperature until the solution is clear, adding Stir 10g of lentinan vigorously for 30min until fully dissolved, then slowly add 16.8g of chloroacetic acid, stir and react at 80°C for 4.5h, cool to room temperature, adjust the pH to 7 with dilute acetic acid, precipitate with alcohol, filter, and collect the precipitate.

[0031] 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. First dialyze with tap water for 24 hours, then dialyze with distilled water for 24 hours, and finally freeze-dry to obtain white cotton-like carboxymethylated mushroom crude polysaccha...

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Abstract

The invention relates to a synthesis and purification method of carboxymethylation lentinan. The synthesis and purification method comprises the following steps of adding lentinan and sodium hydroxide in solvent, violently stirring and fully dissolving; adding chloroacetic acid, stirring and reacting for 3.5-4.5 hours at the temperature of 60-80 DEG C, cooling, and adjusting a pH (potential of hydrogen) value to be neutral; performing alcohol precipitation, filtering and collecting sediments; and dissolving the sediments with water and performing alcohol precipitation, dialysis and freeze drying to obtain white gossypine carboxymethylation lentinan. A test proves that the carboxymethylation lentinan has an excellent physical and sense organ moisture retention effect on cigarettes, irritation and offensive odor of the cigarettes can be reduced, roundness and comfort of smoke of the cigarettes are improved, and the carboxymethylation lentinan can serve as tobacco humectant with excellent performance when used in the cigarettes.

Description

technical field [0001] The invention belongs to the technical field of humectants, and in particular relates to a carboxymethylated lentinan, 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 Further improve it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B15/30
Inventor 芦昶彤陈芝飞孙志涛郝辉宋金勇刘强
Owner CHINA TOBACCO HENAN IND
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