## Abstract An analytical method for the determination of free amino acids and especially of cysteine in musts and wines is reported. This technique involves the use of a pre‐column derivatisation with iodoacetic acid (IDA) and __o__‐phthaldialdehyde (OPA). Isoindole‐type fluorescent derivatives we
HRGC of wine free amino acids as a tool for elementary wine characterization
✍ Scribed by Vasconcelos, Ana M. P. ;das Neves, Higuinaldo J. Chaves
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 437 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0935-6304
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✦ Synopsis
Abstract
In this paper we show that wine free amino acids derivatized as isopropyl N‐heptafluorobutyryl esters can be used as a tool for wine characterization. Elementary wines of eight Vitis vinifera varieties were studied during a seven year period. The characteristic wine amino acids for each variety were assessed by means of pattern recognition techniques. A “star symbol plot” was used for graphic representation.
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