EVIDENCE FOR A SINGLE STRANDED XANTHAN CHAIN BY ELECTRON-MICROSCOPY

被引:8
作者
MILAS, M
RINAUDO, M
TINLAND, B
DEMURCIA, G
机构
[1] UNIV J FOURIER,CTR RECH MACROMOLEC VEGETALES,CNRS,LAB PROPRE,BP 53,F-38042 GRENOBLE,FRANCE
[2] INST BIOL MOLEC & CELLULAIRE,F-67084 STRASBOURG,FRANCE
关键词
Biopolymers--Solutions - Chemical Reactions--Association - Microscopes; Electron - Solutions--Microscopic Examination - Sugars--Adsorption;
D O I
10.1007/BF00283103
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Electron microscopy of xanthan adsorbed on positively charged carbon coated grids indicates that this technique can yield reliable information about the structure of the molecule. The results presented in the present work suggest that xanthan exists only as single stranded wormlike molecules in clean dilute solutions. In contrast the electron micrographs obtained with native and renatured xanthans adsorbed to uncharged supports indicate side by side associations. A possible role of the acetyl substituent content on this behavior is suggested.
引用
收藏
页码:567 / 572
页数:6
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