Corn fiber citrate: Preparation and ion-exchange properties

被引：64

作者：

Wing, RE

机构：

[1] Plant Polymer Research, Natl. Ctr. for Agric. Utiliz. Res., Agricultural Research Service, Peoria, IL 61604

来源：

INDUSTRIAL CROPS AND PRODUCTS | 1996年 / 5卷 / 04期

关键词：

corn fiber; citric acid; agricultural residue; polysaccharide; thermochemical reaction;

D O I：

10.1016/S0926-6690(96)00030-1

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Corn fiber (CF) was allowed to react thermochemically with citric acid (CA) to yield potentially biodegradable products possessing high ion-exchange capacity. The reaction variables studied were: citric acid level (0-100 g), reaction time (0-24 h), pH (1.5-8.3) and temperature (110-140 degrees C). Moisture content and pH were found to be controlling factors. Reaction efficiencies approaching 100% were achieved, while minimizing cross-linking and maximizing carboxyl content. Carboxyl content (0.5-3.6 mmol/g) was determined and copper-binding capacity (0.1-2.0 mmol/g) at pH 4.5 was evaluated for the various CF-CA products.

引用

页码：301 / 305

页数：5