A modified method for the estimation of total carbonyl compounds in heated and frying oils using 2-propanol as a solvent

被引：127

作者：

Endo, Y

Li, CM

Tagiri-Endo, M

Fujimoto, K

机构：

[1] Tohoku Univ, Grad Sch Agr Sci, Sendai, Miyagi 9818555, Japan

[2] Miyagi Prefectural Govt, Ind Technol Inst, Sendai, Miyagi 9813206, Japan

来源：

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 2001年 / 78卷 / 10期

关键词：

carbonyl compound; carbonyl value; 2,4-dinitrophenylhydrazine; frying oil; lipid peroxidation;

D O I：

10.1007/s11746-001-0381-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A modified method without using benzene for quantitative determination of total carbonyl compounds in heated and frying fats and oils has been developed. The analysis is done by the reaction of 2,4-dinitrophenylhydrazine (2,4-DNP) with aldehydes and ketones in 2-propanol. The optimal wavelength to determine the total carbonyl compounds is 420 nm where the 2,4-dinitrophenylhydrazone (2,4-DNPH) derivatives from saturated and unsaturated aldehydes and ketones had the same molar absorption coefficient. The modified method for the estimation of total carbonyl compounds in heated and frying oils using 2-propanol instead of benzene as a solvent had a good correlation with the conventional method.

引用

页码：1021 / 1024

页数：4

共 6 条

[1] A SIMPLE METHOD FOR ESTIMATING CARBONYL CONTENT IN PEROXIDE-CONTAINING OILS [J].