Study on the Extraction Technology of Crude Polysaccharides from Ginkgo biloba Sarcotesta

Abstract

Abstract: Objective: To study the optimal water extraction technology of polysaccharides from Ginkgo biloba sarcotesta.Methods: The content of the polysaccharides was determined by the method of phenol-sulphate acid. The extraction rate was regarded as an examine target. On the basis of single factor tests, orthogonal experiment design was applied to analyze the influence of factors including solid-liquid ratio, extraction temperature and time on the extraction rate of the polysaccharides. Results: Temperature is an important factor for the extraction rate of the polysaccharides. The optimal technology condition was obtained. The extraction temperature is 100℃, the time is 1h, and the solid-liquid ratio is1:12. The extraction rate of polysaccharides and the yield of crude polysaccharides were 95.09% and 23%, respectively. Conclusion: The optimal process is applicable to the extraction of crude polysaccharides from Ginkgo biloba sarcotesta.

Key words: Ginkgo biloba sarcotesta, polysaccharides, extraction technology

WU Xiang-Yang, Mao-Guang-Hua, Yang-Liu-Qing, Wu-Jing-Bo, ZHU Xiao-Huan. Study on the Extraction Technology of Crude Polysaccharides from Ginkgo biloba Sarcotesta[J]. FOOD SCIENCE, 2006, 27(10): 372-375.

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Study on the Extraction Technology of Crude Polysaccharides from Ginkgo biloba Sarcotesta

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