GC‐MS quantitation of isocitric acid in the presence of a large excess of citric acid

Sándor Tisza, I. Molnár-Perl

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A GC‐MS method has been developed for the analysis of the sugar and carboxylic acid content of citrus fruits, including the quantitation of isocitric acid in the presence of a large excess of citric acid. Optimum conditions have been determined for the analysis (from one solution, by one injection, on a 30 m DB‐5 column) of the TMS oxime and/or TMS derivatives of sugars and acids obtained from various lemon, grapefruit, and orange samples. Quantitation was based on the monitoring of the total ion current and of selective fragments. The utility of the method has been demonstrated by the determination of isocitric acid in the presence of 10‐ to 200‐fold excess of citric acid.

Original languageEnglish
Pages (from-to)165-168
Number of pages4
JournalJournal of High Resolution Chromatography
Volume17
Issue number3
DOIs
Publication statusPublished - 1994

Keywords

  • Carboxylic acids
  • Citric acid
  • GC‐MS
  • Isocitric acid
  • Quantitation
  • Selected fragments
  • Sugars
  • TMS derivatives

ASJC Scopus subject areas

  • Chemical Engineering(all)

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