Citation: ZHANG Lina, DING Qiong. INFLUENCES OF MOLECULAR WEIGHT AND BRANCHING PARAMETER OF LACQUER POLYSACCHARIDE ON THE GROWTH OF LEUCOCYTES[J]. Chinese Journal of Polymer Science, ;1995, 13(2): 107-111. shu

INFLUENCES OF MOLECULAR WEIGHT AND BRANCHING PARAMETER OF LACQUER POLYSACCHARIDE ON THE GROWTH OF LEUCOCYTES

ZHANG Lina ,
DING Qiong

Received Date: 28 November 1993

A method of determining branching parameter of lacquer polysaccharide wasestablished by acid-base back-titration of terminal uronic acid of branches. The branchingfactors obtained are in agreement with the values determined by colorimetric method withcarbazole and the results estimated by using Zimm-Stockmayer equation from viscositydata. Influences of molecular weights and branching factors of five fractions of lacquerpolysaccharide on the bioactivities were studied. The results show that the polysaccharids have bioactivities in motivating the growth of leucocytes,and the effect increases with the decrease of molecular weight and branching factor in the range studied(17×104>Mw>4×104.
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