DETERMINATION OF TOTAL CARBONYL-COMPOUNDS IN AQUEOUS-MEDIA

被引：27

作者：

YUKAWA, N

TAKAMURA, H

MATOBA, T

机构：

[1] NARA WOMENS UNIV,FAC HOME ECON,DEPT FOOD SCI & NUTR,NARA 630,JAPAN

[2] NARA WOMENS UNIV,GRAD SCH HUMAN CULTURE,DIV HUMAN LIFE & ENVIRONM SCI,NARA 630,JAPAN

来源：

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 1993年 / 70卷 / 09期

关键词：

ALDEHYDE; CARBONYL COMPOUND; CARBONYL VALUE; 2,4-DINITROPHENYLHYDRAZINE; LIPID PEROXIDATION;

D O I：

10.1007/BF02545347

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A method for the quantitative determination of total carbonyl compounds in aqueous media has been developed. The analysis is based on the reaction of 2,4-dinitrophenyl-hydrazine with aldehydes and the subsequent formation of the quinoidal ion under basic conditions. The aldehydes react with 2,4-dinitrophenylhydrazine in both ethanol and aqueous-ethanol media. The optimal wavelength to determine the total carbonyl compounds is 425 nm where the molar absorption coefficient of saturated aldehydes equals that of unsaturated aldehydes. The method can be used to determine all aldehydes in aqueous food media.

引用

页码：881 / 884

页数：4

共 9 条

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Frankel E.N., 1985, FLAVOR CHEM FATS OIL, P1

[2] LIPID HYDROPEROXIDE REACTIVITY WITH PROTEINS AND AMINO-ACIDS - REVIEW [J].