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Method for efficiently extracting mulberry branch bark pectin

An extraction method, a technology of mulberry branches, applied in the field of pectin extraction from mulberry bark, can solve the problems of low extraction efficiency of pectin, achieve the effect of rich raw materials, solve the shortage of raw materials, and realize high-value conversion

Inactive Publication Date: 2014-01-15
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: the purpose of the present invention is to provide a method for extracting mulberry bark pectin by coupling ionic liquid and cellulase for the low efficiency of pectin extraction in the prior art

Method used

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  • Method for efficiently extracting mulberry branch bark pectin

Examples

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Effect test

Embodiment 1

[0018] Coupling of Ionic Liquid [Mmim][DMP] and Trichoderma reesei Cellulase to Prepare Morus alba Pectin

[0019] (1) Take mulberry branches and cut off the mulberry bark with a knife, cut off the phloem, take the mulberry bark, wash away the sediment with tap water, and dry at 60°C for 2 hours;

[0020] (2) Take 100g of mulberry bark, add 600g of ionic liquid [Mmim][DMP] (1,3-dimethylimidazole dimethyl phosphate salt), treat the mulberry bark at 100°C for 10-50min, and add to the system Add 1000-3000mL of water to precipitate cellulose and other materials;

[0021] (3) Take the upper liquid, add Trichoderma reesei cellulase to a final concentration of 5 FPU / mL, and treat at 45°C for 12 hours to remove cellulose impurities mixed in pectin;

[0022] (4) Add 20 g of activated carbon to the liquid that has been treated with cellulase to remove impurities, mix and decolorize, stir for 10-30 minutes, filter to remove the activated carbon, and obtain a decolorized pectin solution;...

Embodiment 2

[0026] Coupling of Ionic Liquid [Emim][DEP] and Trichoderma viride Cellulase to Prepare Morus alba Pectin

[0027] (1) Take mulberry branches and cut off the mulberry bark with a knife, cut off the phloem, take the mulberry bark, wash away the sediment with tap water, and dry at 60°C for 2 hours;

[0028] (2) Take 100g of mulberry bark, add 200g of ionic liquid [Emim][DEP] (1-ethyl-3-methylimidazole diethyl phosphate salt), and treat the mulberry bark at 45°C for 10-30min, Add 1000-4000mL water to the system to precipitate cellulose and other materials;

[0029] (3) Take the upper liquid, add Trichoderma viride cellulase to a final concentration of 6 FPU / mL, and treat at 50°C for 4-12 hours to remove cellulose impurities mixed in pectin;

[0030] (4) Add 20 g of activated carbon to the liquid that has been treated with cellulase to remove impurities, mix and decolorize, stir for 10-30 minutes, filter to remove the activated carbon, and obtain a decolorized pectin solution;

...

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Abstract

The invention discloses a method for efficiently extracting mulberry branch bark pectin. The method comprises the following steps of: (1) treating mulberry branch bark by using a greenhouse ionic liquid to separate pectin in the branch bark from cellulose and the like; (2) after treating with the greenhouse ionic liquid, adding water for dissolving the pectin in the mulberry branch bark pectin into water, and precipitating components such as cellulose, hemicellulose, lignin and the like out; (3) taking an upper layer liquid, adding cellulose for treating, and removing cellulose impurities; and (4) decolorizing a supernatant, adding ethanol for precipitating the pectin out, washing with absolute ethanol, drying, and grinding into powder to obtain mulberry branch bark pectin. In the method, the ionic liquid is taken as a treating agent for extracting mulberry branch bark pectin, so that pectin can be extracted effectively, ionic liquid treatment is only required to be performed for 20-50 minutes, the final yield of pectin can be up to about 11 percent, and the pectin extracting efficiency of the mulberry branch bark is increased.

Description

technical field [0001] The invention belongs to the technical field of biochemical engineering and food engineering, and in particular relates to a method for extracting mulberry bark pectin. Background technique [0002] Pectin is an acidic macromolecular polysaccharide formed by the polymerization of D-galacturonic acid residues through α(1→4) glycosidic bonds. It is a component of plant cell walls and is white, light yellow to yellow powder. Fixed melting point and solubility, insoluble in organic solvents such as ethanol. Pectin has very good gelation and emulsification stabilization, and is safe and non-toxic. It is widely used in food, medicine, cosmetics, etc. as a stabilizer, emulsifier and thickener. The demand for pectin at home and abroad is increasing, and my country imports a large amount of pectin from abroad every year, so the development of new sources of pectin and the application of new processes have very broad prospects. [0003] Mulberry trees have bee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/06
Inventor 李强季更生费娟娟谷绪顶
Owner JIANGSU UNIV OF SCI & TECH
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