HPLC COUPLED WITH A COULOMETRIC ELECTRODE ARRAY DETECTOR - DETERMINATION OF PHLORETIN GLUCOSIDE IN JUICES FOR DETECTION OF ADULTERATION

Authors
SONTAG G BERNWIESER I
Citation
G. Sontag et I. Bernwieser, HPLC COUPLED WITH A COULOMETRIC ELECTRODE ARRAY DETECTOR - DETERMINATION OF PHLORETIN GLUCOSIDE IN JUICES FOR DETECTION OF ADULTERATION, Deutsche Lebensmittel-Rundschau, 90(3), 1994, pp. 72-74
Citations number
14
Categorie Soggetti
Food Science & Tenology
Journal title
Deutsche Lebensmittel-Rundschau → ACNP
ISSN journal
00120413
Volume
90
Issue
3
Year of publication
1994
Pages
72 - 74
Database
ISI
SICI code
0012-0413(1994)90:3<72:HCWACE>2.0.ZU;2-5
Abstract
A method for quantitative determination of phloretin glucoside in appl e juice and nectar of pears using HPLC with coulometric electrode arra y detection is described. After a simple sample preparation the compon ents are separated on a reserved phase column (C18, 5mum) and detected at potentials between + 400 and + 855 mV. The concentration of phlore tin glucoside in commercial apple juices varies between 10.4 and 16.7 mg/L. The chromatograms of apple and pear samples are very simple, but have a different pattern. Therefore it is possible to recognize an ad ulteration of pear nectar with apple juice down to 1%.