MOLECULAR WEIGHT OF XANTHAN POLYSACCHARIDE

Chinese Journal of Applied Chemistry ›› 1989, Vol. 0 ›› Issue (5): 86-88.

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MOLECULAR WEIGHT OF XANTHAN POLYSACCHARIDE

Zhao Dajian¹, Yiang Jianhua¹, Yu Xianchao², Wang Derun²

1. Department of Biology, Nankai University, Tianjin;
2. Central Laboratory, Nankai University, Tianjin

Received:1988-11-23 Revised:1989-03-16 Published:1989-10-10 Online:1989-10-10

Abstract

Abstract: In this paper,four fractions of xanthan gum with different molecular weight determined by SALS technique were prepared by ultrasonication. Taking these fractions as standards, the various average molecular weight of natural xanthan, M_n=1.41?10⁶, M_w=3.08?10⁶, M_v=2.80?10, M_z=6.65?10⁶, were obtained by GPC in 0.80M NaCl aqueous solution. The molecular weight distribution index D and intrinsic viscosity of native xanthan were calculated as 2.18 and 2049.5mL/g respectively.

Key words: Xanthan, Molecular weight, Molecular weight distribution, Gel permeation chromatography, Small angle laser light scattering

Zhao Dajian, Yiang Jianhua, Yu Xianchao, Wang Derun. MOLECULAR WEIGHT OF XANTHAN POLYSACCHARIDE[J]. Chinese Journal of Applied Chemistry, 1989, 0(5): 86-88.

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