Investigations of the adulteration of extra virgin olive oils with seed oils using their weak chemiluminescence

被引：27

作者：

Papadopoulos, K

Triantis, T

Tzikis, CH

Nikokavoura, A

Dimotikali, D

机构：

[1] Democritos Natl Res Ctr Phys Sci, Inst Chem Phys, GR-15310 Athens, Greece

[2] NTU Athens, Dept Chem Engn, Athens, Greece

来源：

ANALYTICA CHIMICA ACTA | 2002年 / 464卷 / 01期

关键词：

chemiluminescence; olive oils; seed oils; potassium superoxide;

D O I：

10.1016/S0003-2670(02)00436-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A weak chemiluminescence (CL) emission was observed in commercial Greek extra virgin olive oils (Knossos, Spitiko, Ananias, Altis, Minerva, Xenia) and in refined seed oils such as sunflower oils (Marata, Sanola, Sun, Mana, Sol, Minerva) as well as in corn oils (Flora, Minerva, Marata Sun and Sol) with potassium superoxide in the aprotic solvent dimethoxyethylene. On measuring the CL of mixtures of extra virgin olive oils with the cheaper refined seed oils, calibrations were produced which can be used for the determination of the adulteration of olive oils with seed oils down to 3%. Furthermore, depending on the kind of oils, "low" authenticity-CL-factors for olive oils (0.8-2.15 mumol l(-1) gallic acid) and "high" for seed oils (4.5-11.2 mumol l(-1) gallic acid) were calculated. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：135 / 140

页数：6

共 32 条

[1] Analysis of olive oil and seed oil triglycerides by capillary gas chromatography as a tool for the detection of the adulteration of olive oil [J].