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Method for extracting mangiferin

A technology of mangiferin and mango, applied in chemical instruments and methods, preparation of sugar derivatives, sugar derivatives, etc., can solve the problems of long extraction time, waste of energy, impact on product quality and people's health, etc., and shorten the extraction time. , the effect of saving energy

Inactive Publication Date: 2009-05-13
NANNING BAIJI BIOLOGICAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problems existing in the existing disclosed mangiferin extraction process are: 1. Using chemical solvents for extraction, there are environmental pollution and harmful solvent residues, which affect product quality and people’s health; 2. The extraction time is long, which wastes energy and increases costs
3. Insufficient extraction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Fresh mango leaves are dried in the sun, removed impurities, crushed, put into an extraction tank, added deionized water at a ratio of 1:3, mixed, pressurized at 20MPA, heated at 200°C, kept for 20 minutes, and kept stirring during the period; decompressed and cooled. The solution is filtered out, concentrated through a membrane, and the concentrated concentration is less than 30%, applied to a macroporous resin column of model D101, eluted, concentrated by evaporation, crystallized, and dried to obtain the finished product.

Embodiment 2

[0020] Fresh mango leaves are dried in the sun, removed impurities, crushed, put into the extraction tank, add alcohol-water mixture at a ratio of 1:3, in which the ethanol content is 10%, mix, pressurize at 30MPA, heat at 250°C, keep for 30 minutes, and keep it for 30 minutes. Stir; reduce pressure and cool down. The solution is filtered out, concentrated through a membrane, and the concentrated concentration is less than 30%, applied to a macroporous resin column of model D301, eluted, concentrated by evaporation, crystallized, and dried to obtain the finished product.

Embodiment 3

[0022] Fresh almond leaves are dried in the sun, removed impurities, crushed, put into the extraction tank, add alcohol-water mixture at a ratio of 1:3, in which propanol content is 30%, mix, pressurize at 40MPA, heat at 300°C, keep for 15 minutes, during Constant stirring; decompression, cooling. The solution is filtered out, concentrated through a membrane, and the concentrated concentration is less than 30%, applied to a D130 macroporous resin column, eluted, concentrated by evaporation, crystallized, and dried to obtain the finished product.

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Abstract

The invention relates to a method for extracting mangiferin, which uses a mango leaf or an almond leaf as a raw material to sufficiently extract the mangiferin in the mango leaf or the almond leaf by using water or alcohol-water mixed solution as menstruum through adopting a high-temperature and high-pressure method. The method has the advantages that the method has a simple process, saves energy and time, and is easy to realize industrialized production.

Description

technical field [0001] The invention relates to a process for extracting mangiferin from mango leaves or almond leaves. Background technique [0002] Guangxi is a large province of mango planting, with a mango planting area of ​​more than 40,000 hectares, accounting for 33% of the national planting area. Based on the calculation that 100kg of mango leaves can be harvested per mu, the annual output of mango leaves is more than 60,000 tons. This is an important resource of Guangxi's characteristic Chinese medicine industry, but for a long time, except for a small amount of these leaves used as Chinese medicine decoction pieces, more than 90% of these leaves have not been fully utilized and wasted in vain. Using new technology to extract mangiferin from mango leaves can make full use of Guangxi's characteristic agricultural and sideline product resources, greatly improve the utilization rate of mango leaves, increase its added value, turn waste into treasure, increase farmers'...

Claims

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Application Information

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IPC IPC(8): C07H17/04C07H1/08
Inventor 邹步珍龙泽云
Owner NANNING BAIJI BIOLOGICAL ENG
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