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Liquid-liquid extraction of silylated polyalcohols from vinegar, and their determination by capillary GC

✍ Scribed by Antonelli, Andrea ;Carnacini, Alberta ;Versari, Andrea

Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 279 KB
Volume: 17
Category: Article
ISSN: 0935-6304
DOI: 10.1002/jhrc.1240170709

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A capillary gas chromatographic method has been developed for the determination of glycerol, erythritol, arabitol, sorbitol, and inositol in vinegar. After addition of phenyl‐β‐glucopyranoside as internal standard, the sample was then dried and silylated. The analysis was performed both on the crude silylated sample and after liquid – liquid extraction. The repeatability of the two methods was evaluated on twenty three different types of vinegar and the extraction did not seriously affect the analysis. Extraction of the TMS‐ethers enables elimination of a large number of interfering substances such as acids and polyphenols and so acts as a purification of the sample.

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