OXIDATION OF D-GLUCOSE BY CU(II) IN ACIDIC MEDIUM

被引：13

作者：

SIGNORELLA, S ^{[1
]}

LAFARGA, R ^{[1
]}

CIULLO, L ^{[1
]}

SALA, LF ^{[1
]}

机构：

[1] UNIV NACL ROSARIO,DEPT QUIM FIS,RA-2000 ROSARIO,ARGENTINA

来源：

CARBOHYDRATE RESEARCH | 1994年 / 259卷 / 01期

关键词：

D O I：

10.1016/0008-6215(94)84195-0

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The oxidation of D-glucose by Cu(II) has been studied in NaAcO buffers within the pH range of 4-5 at 110 degrees C. The observed pseudo-first-order rate constant is given by: a[AcO-] + b/[H+] + c[AcO-][Glc] + d[Glc]/[H+](2), where a = 5.3 +/- 0.4 x 10(-4) s(-1) M(-1) b = 1.30 +/- 0.07 x 10(-8) s(-1) M, c = 6.16 +/- 0.04 x 10(-3) s(-1) M(-2), and d = 3.2 +/- 0.2 x 10(-13) s(-1) M. This rate law corresponds to the formation of gluconic acid and Cu(I) when a ten-fold or higher excess of D-glucose over Cu(II) is employed. The results are discussed in terms of a possible mechanism of oxidation of D-glucose by CuOAc+, present in solution.

引用

页码：35 / 43

页数：9

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