Determination of polyphenols, indole-3-acetic acid and 2-aminoacetophenone in wines by high performance liquid chromatography

Maslov, Luna (2014) Determination of polyphenols, indole-3-acetic acid and 2-aminoacetophenone in wines by high performance liquid chromatography. Doctoral thesis, Faculty of Science > Department of Chemistry.

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Abstract

Method for determination of 31 polyphenols and indole-3-acetic acid in wines was developed using high performance liquid chromatography with diode array detector and fluorescence detector. Solid phase extraction of polyphenolic compounds and indole-3-acetic acid using N-vinylpirolidone-divinylbenzene copolymer as sorbent was optimized. Polyphenolic composition and indole-3-acetic acid were determined in white and red wines from Croatia. Indole-3-acetic acid was determined for the first time in red wines from Croatia, in mass concentrations ranging from 0.076 mg L-1 to 1.031 mg L-1. Anthocyanins pattern as chemotaxonomic marker was observed for autochtonic cultivars Teran and Plavac mali from Croatia. Ultrasound-assisted headspace solid-phase microextraction and direct immersion solid-phase microextraction were compared and optimized for etermination of 2-aminoacetophenone. Identification and quantification of 2-aminoacetophenone was performed by gas chromatography-mass spectrometry.

Item Type: Thesis (Doctoral thesis)
Keywords: 2-aminoacetophenone, indole-3-acetic acid, polyphenols, solid-phase extraction, solid-phase microextraction, untypical aging off-flavour, wine
Supervisor: Šarić, Marica Medić
Date: 2014
Number of Pages: 198
Subjects: NATURAL SCIENCES > Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: mag. bibl. Ana Šafran
Date Deposited: 10 Jul 2014 12:28
Last Modified: 18 Apr 2016 14:11
URI: http://digre.pmf.unizg.hr/id/eprint/2491

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