Study on Structure of Water-soluble Polysaccharides from Fruit Calyx of Physalis alkekengi L. var. franchetii (Mast.) Makino

Abstract

Abstract: Being isolated by DE-52 and Sephadex G-200 gel filtration, four homogeneous polysaccharide which are PAVF I,PAVF II-a, PAVF II-b and PAVF III were obtained. Gas chromatography analysis and infrared spectra analysis showed that PAVF I is mainly composed of arabinose where the molecular weight of PAVF I is 107 kD. PAVF II-a is mainly composed of xylose, mannose, glucose where the molecular w-eight of PAVF II-a is 500 kD. PAVF II-b is mainly composed of rhamnose, mannose and fructose, the molecular weight of which is 170 kD. And PAVF III is mainly composed of rhamnose and some protein combined by covalent bond. Characterization of the four glycoconjugates by IR analysis showed that the typical absorption of polysaccharide indicates the presence of β-glycoside linkage.

Key words: Physalis alkekengi L. var. francheti (Mast.) Makino, polysaccharide, structure

LIU Jun-Hua, SUN Yong-Min. Study on Structure of Water-soluble Polysaccharides from Fruit Calyx of Physalis alkekengi L. var. franchetii (Mast.) Makino[J]. FOOD SCIENCE, 2007, 28(11): 94-98.

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Study on Structure of Water-soluble Polysaccharides from Fruit Calyx of Physalis alkekengi L. var. franchetii (Mast.) Makino

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