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Nihon Bunseki Kagakkai, Analytical Sciences, 9(19), p. 1285-1290, 2003

DOI: 10.2116/analsci.19.1285

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Development and Evaluation of a GC/FID Method for the Analysis of Free Amino Acids in Quince Fruit and Jam

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

A GC/FID methodology for determination of twenty-one free amino acids in quince fruit (pulp and peel) and jam is described. The sample preparation was simple, involving a SCX Solid-Phase Extraction (SPE) purification step and a fast derivatization with ethyl chloroformate for gas chromatographic analysis. The chromatographic separation was achieved using a CP-Sil 19 CB wcot fused-silica capillary column. Under the chosen conditions, with temperature and pressure programming, this capillary column was able to separate all the amino acids not only in a short time but also with good separation. The GC/FID procedure is rapid, sensitive, reproducible and accurate. The detection limit values for amino acids were low, between 0.004 and 0.115 microg/mL, and the method was precise. As a general rule, the recovery values were high. Due to its rapidity and low cost, this technique can be useful in the quality control of quince products.