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Research on Extraction of Pectin from Orange Peel

Shen Yong-gen

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Abstract

Taking dried orange peel which is crushed as material,raw pectin was extracted from it with the method of acid hydrolysis deposition.The research aimed to investigate the best conditions for extracting raw pectin from orange peel by single-factor experiment(material to water ratio,pH value,extraction temperature and extraction time)and L9(34)orthogonal experiment.The maximum extracting rate of raw pectin could be obtained under the following conditions: The temperature was 85 ℃,the ratio of orange peel over hydrochloric acid was 1∶10,pH value was 2.0,the stirring time was 60 minutes.The average extracting rate of pectin from orange peel was 14.57%.The purity of pectin was 87.23%.The esterification degree of pectin was 75.66%,and pectin sample color was creamy white to pale yellow.

About this research paper

What this paper is about

Taking dried orange peel which is crushed as material,raw pectin was extracted from it with the method of acid hydrolysis deposition.The research aimed to investigate the best conditions for extracting raw pectin from orange peel by single-factor experiment(material to water ratio,pH value,extraction temperature and extraction time)and L9(34)orthogonal experiment.The maximum extracting rate of raw pectin could be obtained under the following conditions: The temperature was 85 ℃,the ratio of orange peel over hydrochloric acid was 1∶10,pH value was 2.0,the stirring time was 60 minutes.The average extracting rate of pectin from orange peel was 14.57%.The purity of pectin was 87.23%.The esterification degree of pectin was 75.66%,and pectin sample color was creamy white to pale yellow.

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Available abstract

Taking dried orange peel which is crushed as material,raw pectin was extracted from it with the method of acid hydrolysis deposition.The research aimed to investigate the best conditions for extracting raw pectin from orange peel by single-factor experiment(material to water ratio,pH value,extraction temperature and extraction time)and L9(34)orthogonal experiment.The maximum extracting rate of raw pectin could be obtained under the following conditions: The temperature was 85 ℃,the ratio of orange peel over hydrochloric acid was 1∶10,pH value was 2.0,the stirring time was 60 minutes.The average extracting rate of pectin from orange peel was 14.57%.The purity of pectin was 87.23%.The esterification degree of pectin was 75.66%,and pectin sample color was creamy white to pale yellow.

Key concepts: Pectin, Orange (colour), Chemistry, Raw material, Hydrochloric acid, Chromatography, Food science, Pectinase

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