SIMULTANEOUS DETERMINATION OF 2-FURFURALDEHYDE AND 5-(HYDROXYMETHYL)-2-FURFURALDEHYDE BY DERIVATIVE SPECTROPHOTOMETRY

被引：28

作者：

TU, DN ^{[1
]}

XUE, SF ^{[1
]}

MENG, CY ^{[1
]}

ESPINOSAMANSILLA, A ^{[1
]}

DELAPENA, AM ^{[1
]}

LOPEZ, FS ^{[1
]}

机构：

[1] UNIV EXTREMADURA,DEPT ANALYT CHEM,E-06071 BADAJOZ,SPAIN

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 1992年 / 40卷 / 06期

关键词：

D O I：

10.1021/jf00018a021

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The reactions of 2-furfuraldehyde (FUR) and 5-(hydroxymethyl)-2-furfuraldehyde (HMF) with 2-thiobarbituric acid (TBA) have been investigated. These compounds react with TBA in an acidic medium, and the reaction is accelerated by heating at moderate temperature. The yellow reaction products show high absorption in the visible region. Chemical variables that affect the reactions have been optimized. The spectral overlapping of the reaction products of FUR and HMF with TBA has been resolved by first-derivative spectrophotometry. The simultaneous determination of FUR and HMF mixtures is accomplished by taking the first-derivative signal at 436 nm for FUR determination and at 414 nm for HMF determination, respectively. The method has been applied to a commercial orange juice and oral rehydration salt formulations.

引用

页码：1022 / 1025

页数：4

共 19 条

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