Method for extracting longan pulp polysaccharide

Through a combined method of high pressure, enzyme, blue light and ultrasonic treatment, combined with vacuum and freezing technology, the problems of low polysaccharide extraction efficiency and structural damage in the existing technology are solved, and high-efficiency extraction of high-quality longan pulp polysaccharides is achieved.

CN109053916AInactive Publication Date: 2018-12-21GUANGXI XIUMEI ZHUANGXIANG ENERGY ENVIRONMENTAL PROTECTION CO LTD
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Patent Information

Application Number
CN201810694083.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2018-06-29
Publication Date
2018-12-21
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing technology is difficult to efficiently extract polysaccharides from longan pulp, and it is easy to destroy the polysaccharide structure and activity.

Method used

A combination of high-pressure treatment, enzyme treatment, blue light irradiation and ultrasonic treatment, combined with vacuum and freezing technology, is used to gradually destroy the longan pulp cell wall, promote polysaccharide dissolution, and protect the polysaccharide structure by lowering the temperature with liquid nitrogen.

Benefits of technology

It significantly improves the extraction rate and retention of polysaccharides, reduces the degree of damage to polysaccharide structure and activity, and has higher extraction efficiency than traditional methods. Polysaccharides have large molecular weight and strong antioxidant capacity.

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Abstract

The invention belongs to the technical field of longan deep processing and specifically discloses a method for extracting longan pulp polysaccharide. The method for extracting longan pulp polysaccharide disclosed by the invention comprises the following steps: (1) raw material selection: selecting high-quality longan and peeling and removing kernels to obtain longan pulp; (2), high-pressure treatment: smashing the longan pulp and performing high-pressure treatment; (3) enzyme treatment: performing enzymolysis under the vacuum condition; (4) light treatment: utilizing blue light to perform radiation treatment; (5) performing ultrasonic extraction; (6) filtering and centrifuging; (7) drying. All the steps of the method for extracting longan pulp polysaccharide disclosed by the invention aretightly combined, so that the polysaccharide extracting rate is effectively improved; furthermore, damage degrees of polysaccharide structures and activity are reduced.
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