Analytical data for Acacia senegal var. senegal gum samples collected between 1993 and 1995 from Sudan

被引：30

作者：

Karamalla, KA

Siddig, NE

Osman, ME

机构：

[1] Univ Khartoum, Fac Agr, Dept Biochem & Soil Sci, Khartoum N, Sudan

[2] Khartoum Gum Arab Proc Co, Khartoum, Sudan

[3] Gum Arab Co Ltd, Khartoum, Sudan

来源：

FOOD HYDROCOLLOIDS | 1998年 / 12卷 / 04期

关键词：

gum arabic; Acacia senegal var. senegal; Hashab gum; specifications; specific rotation and nitrogen content;

D O I：

10.1016/S0268-005X(98)00005-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Over 1500 authentic and commercial A. senegal var. senegal gum samples were analysed to evaluate existing quality control parameters and to assess the potential of new parameters such as pH, viscosity, viscosity average molecular weight (Mv) equivalent weight and total uronic acid content as additional qualifying indices. The data obtained indicate the following mean values: moisture (10.75%), ash (3.77%), nitrogen (0.328%), specific rotation (-31.3 degrees), pH (4.66), equivalent weight (1436) and total uronic acid content (13.71%). The results also indicate wide variations in intrinsic viscosity and viscosity average molecular weight (mean values 16.4 ml g(-1) and 9.0x10(5), respectively. Accordingly these parameters, therefore, cannot be recommended as qualifying indices. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：373 / 378

页数：6

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