The characterization of gum arabic (Acacia senegal) samples from Uganda

被引：29

作者：

Anderson, D. M. W. ^{[1
]}

Wang Weiping ^{[1
]}

机构：

[1] Univ Edinburgh, Dept Chem, Edinburgh EH9 3JJ, Midlothian, Scotland

来源：

FOOD HYDROCOLLOIDS | 1991年 / 5卷 / 03期

关键词：

D O I：

10.1016/S0268-005X(09)80115-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Seven samples of gum from Acacia senegal trees growing in north-east Uganda have been characterized. All have negative specific rotations (-26 to -34 degrees) and nitrogen contents of 0.27-0.28% and therefore satisfy the revised JECFA specification for gum arabic. They have, however, lower methoxyl, rhamnose, and hydroxyproline contents than typical Sudanese commercial samples. In addition, the Ugandan samples vary considerably in their emulsification functionality and contain unusually high proportions of aluminium, chromium, copper and iron. Fourier-transform (13)C-NMR spectra confirm that the variations in the analytical parameters of these samples reflect differences in fine structure

引用

页码：297 / 306

页数：10

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