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Process for extracting camellia oleifera shell husk chitin

A technology of camellia oleifera husk and extraction process, which is applied in the chemical industry, can solve the problems of single method and seldom comprehensive utilization, and achieve the effects of high extraction rate, favorable industrial application, and simple and easy extraction process

Inactive Publication Date: 2016-08-03
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of camellia husks are directly burned by farmers, and a few are used as industrial resources, but the method is single, such as preparing activated carbon or extracting antioxidant substances or extracting polysaccharides or extracting tea saponin, etc., and rarely comprehensively utilized

Method used

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  • Process for extracting camellia oleifera shell husk chitin
  • Process for extracting camellia oleifera shell husk chitin
  • Process for extracting camellia oleifera shell husk chitin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Camellia oleifera husk powder is passed through a 50-mesh sieve and mixed with water. The solid-to-liquid mass ratio of camellia oleifera husk powder to water is 1:15 to obtain a mixture. The mixture is ultrasonically extracted at 90°C for 30 minutes, twice, twice Mix the extracts, concentrate the extracts in vacuum at 40-50°C until viscous, add a certain volume of absolute ethanol to make the volume fraction of ethanol in the extracts reach 80%, alcohol precipitation at 3-5°C for 24 hours, and centrifuge after alcohol precipitation The precipitate and the supernatant are separated, the precipitate is dissolved with an appropriate amount of ultrapure water, and vacuum freeze-dried to obtain the crude polysaccharide of camellia oleifera husk. A certain amount of polysaccharide extract was weighed, and the content of uronic acid was determined by the phenol-sulfuric acid method. The extraction rate of camellia oleifera chitosan was 5.63%, and the content of uronic acid wa...

Embodiment 2

[0062] Camellia oleifera shell powder is passed through a 50-mesh sieve and mixed with water. The solid-to-liquid mass ratio of camellia oleifera shell powder and water is 1:15 to obtain a mixture. The mixture is placed in a microwave oven and extracted at 540W for 7 minutes, extracted twice, twice Mix the secondary extracts, concentrate the extracts in vacuum at 40-50°C until viscous, add a certain volume of absolute ethanol to make the volume fraction of ethanol in the extracts reach 80%, and carry out alcohol precipitation at 3-5°C for 24 hours. The precipitate and the supernatant were separated by centrifugation, the precipitate was dissolved with an appropriate amount of ultrapure water, and vacuum freeze-dried to obtain the crude polysaccharide of camellia oleifera husk. A certain amount of polysaccharide extract was weighed, and the content of uronic acid was determined by the phenol-sulfuric acid method. The extraction rate of camellia oleifera chitosan was 9.6%, and t...

Embodiment 3

[0064] Camellia oleifera shell powder is passed through a 50-mesh sieve and mixed with water. The solid-to-liquid mass ratio of camellia oleifera shell powder to water is 1:15 to obtain a mixture. The mixture is ultrasonically extracted at 90°C for 30 minutes, 540W for 7 minutes, and two The second time, the two extracts are mixed, the extract is concentrated in vacuum at 40-50°C to a viscous shape, a certain volume of absolute ethanol is added to make the ethanol volume fraction in the extract reach 80%, and alcohol precipitation is carried out at 3-5°C for 24 hours. After alcohol precipitation, the precipitate and the supernatant were separated by centrifugation, the precipitate was dissolved with an appropriate amount of ultrapure water, and vacuum freeze-dried to obtain the crude polysaccharide of camellia oleifera husk. A certain amount of polysaccharide extract was weighed, and the content of uronic acid was determined by the phenol-sulfuric acid method. The extraction r...

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Abstract

The invention relates to a process for extracting camellia oleifera shell husk chitin. The process comprises the following steps: screening camellia oleifera shell husk powder by a sieve of 40-60 meshes so as to obtain treated powder; mixing the treated powder with water so as to obtain a mixture, wherein the mass ratio of camellia oleifera shell husk powder to water is 1:(10-20); performing ultrasonic and / or microwave extraction on the mixture, wherein the condition of ultrasonic extraction is that the ultrasonic extraction lasts for 15-35 minutes at 80-100 DEG C; the condition of microwave extraction is that microwave extraction lasts for 5-9 minutes under microwaves of 240-700 W; concentrating an extract at 40-50 DEG C, adding ethanol, performing alcohol precipitation for 12 hours or more at 3-5 DEG C after the volume fraction of ethanol is 80% or above, and separating the precipitate, thereby obtaining the camellia oleifera shell husk chitin. The process is simple and feasible, high in extraction rate, low in cost and beneficial for industrial application.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a process for extracting camellia oleifera polysaccharide. Background technique [0002] Camellia oleifera is the main woody oil plant in my country, and it is also the four largest woody edible oil plant in the world. Camellia oleifera husk is the shell of camellia oleifera fruit, the main by-product of camellia oleifera production, and is rich in resources. Camellia oleifera husk is a waste resource. According to literature reports, camellia oleifera husk polysaccharide extracted from oleifera husk has biological activities such as anti-tumor, anti-oxidation, and hypolipidemic effects. It has been used in food, environmental protection, beauty care and other daily It has been applied in the chemical industry, especially in the field of biomedicine. However, at present, most of Camellia oleifera husks are directly burned by farmers, and a few are used as ...

Claims

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Application Information

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IPC IPC(8): C08B37/00
CPCC08B37/00C08B37/0003
Inventor 续旭毕德成张永夏陈培锋廖伟良
Owner SHENZHEN UNIV