Determination of colorant matters mixtures in foods by solid-phase spectrophotometry

被引：58

作者：

Capitan, F ^{[1
]}

CapitanVallvey, LF ^{[1
]}

Fernandez, MD ^{[1
]}

deOrbe, I ^{[1
]}

Avidad, R ^{[1
]}

机构：

[1] UNIV GRANADA, DEPT ANALYT CHEM, E-18071 GRANADA, SPAIN

来源：

ANALYTICA CHIMICA ACTA | 1996年 / 331卷 / 1-2期

关键词：

solid-phase spectrophotometry; colorants determination; food analysis;

D O I：

10.1016/0003-2670(96)00192-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new, simple, sensitive and inexpensive method for simultaneous determination of Sunset Yellow FCF (SY), Quinoline Yellow and their respective unsulphonated products (Sudan I (SUD) and Quinoline Yellow Spirit Soluble (QYSS)) in mixtures is proposed. Sunset Yellow and Quinoline Yellow were selectively fixed in Sephadex DEAE A-25 gel (pH 5.0) and SUD and QYSS were selectively fixed in C-18 silica gel (pH 5.0) and the absorbances of both systems were measured directly in solid-phase. The applicable concentration ranges were from 3.0 to 500.0 ng ml(-1) for Quinoline Yellow Water Soluble (QYWS), from 3.0 to 200.0 ng ml(-1) for QYSS, from 15.0 to 500.0 ng ml(-1) for SY and from 20.0 to 200.0 ng ml(-1) for SUD. The method was applied to the determination of these compounds in soft drinks, fruit liqueurs and ice creams.

引用

页码：141 / 148

页数：8