Aggregation of Aeromonas gum in aqueous solution

被引：17

作者：

Zhang, L ^{[1
]}

Xu, XJ

Jiang, GW

Iijima, H

Tsuchiya, H

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

[2] Asahi Chem Ind Co Ltd, Chem Technol Dept 4, Miyazaki 8820847, Japan

[3] Asahi Chem Ind Co Ltd, Specialty Chem Sales Dept 4, Tokyo 1008440, Japan

来源：

POLYMER JOURNAL | 1999年 / 31卷 / 02期

关键词：

aggregation; Aeromonas gum; light scattering; viscometry; polysaccharide aqueous solution;

D O I：

10.1295/polymj.31.150

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Aeromonas (A) gum, a stabilizer, and thickening agent of food, is composed of xylose, mannose, galactose, glucose, and mannuronic acid. Weight average molecular weights M-w and intrinsic viscosities [eta] of the unfractionated A gum and three fractions in water. 0.5 M NaCl aqueous solution and cadoxen were studied by light scattering and viscometry. Experimental results showed that A gum exists as an aggregate in 0.5 M NaCl aqueous solution and mainly as a single chain in cadoxen. The apparent aggregation number (N-sp) of A gum in 0.5 M NaCl aqueous solution was ca. 22, and decreased with increasing sample molecular weight. Change of aggregation and disaggregation of A gum in 0.5 M NaCl aqueous,cadoxen mixtures occurred from 0 to 0.4 of nu(cad) (volume fraction of cadoxen). and was reversible. The stable aggregation of A gum in 0.5 M NaCl aqueous/3% cadoxen mixture was achieved after 150 min.

引用

页码：150 / 153

页数：4

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