DETERMINATION OF GLUCOSE IN INSTANT COFFEE WITH AN ENZYME ELECTRODE

被引:5
作者
MATSUKURA, R
ALEIXO, LM
GODINHO, OES
NETO, GD
机构
[1] Instituto de Química, Unicamp, 13081 Campinas, SP
关键词
COFFEE; ENZYME ELECTRODES; GLUCOSE; AMPEROMETRY; BIOSENSORS; ENZYMATIC METHODS;
D O I
10.1016/0003-2670(93)80240-L
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An amperometric method utilizing an enzyme electrode was developed for the determination of the glucose content of instant coffee. The electrode was constructed by combining an oxygen electrode with a beta-D-glucose oxidase-immobilized collagen membrane. Samples of instant coffee were analysed and the results obtained by the proposed method and by the established AOAC method agreed well (r = 0.9964). The sensor was stable for more than 2 weeks and for 320 analyses.
引用
收藏
页码:49 / 52
页数:4
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