italianoenglishfrançaisdeutschespañolportuguês
Language
Search
  • » Winemaking Processes
  • » Monitoring Acetaldehyde Concentrations during Micro-oxygenation of Red Wine by Headspace Solid-Phase Microextraction with On-Fiber Derivatization
  • Vicente Ferreira , LAAE, Universidad de Zaragoza
    VIDEO SEMINAR ENOFORUM 2018: 70% of commercial wines contain, without it being evident, the aromas that will cause their aromatic degradation when free SO2 level decreases. Essentially there are tw...
    Price:15 €(Tax included)
    Published on: 17/01/2019

Monitoring Acetaldehyde Concentrations during Micro-oxygenation of Red Wine by Headspace Solid-Phase Microextraction with On-Fiber Derivatization

William K. Carlton, Barry Gump, Kenneth Fugelsang, and Alam S. Hasson, J. Agric. Food Chem., 55 (14), 5620 -5625, 2007

An analytical method was developed to quantify levels of acetaldehyde in wine samples. The method utilizes headspace solid-phase microextraction with on-fiber derivatization using O-(pentafluorobenzyl) hydroxylamine and quantification by gas chromatography with flame ionization detection. The technique showed good sensitivity and reproducibility in samples of Chardonnay, Petite Sirah, and Merlot wines containing acetaldehyde at levels below the sensory threshold (40-100 ppm). The method was used to monitor acetaldehyde concentrations during the micro-oxygenation of Merlot wine in a 141 L pilot-plant experiment and a 2400 L full-scale study. In both experiments, levels of acetaldehyde remained constant for several weeks before increasing at rates of the order of 1 ppm/day. Variations in the levels of acetaldehyde present are discussed within the context of the underlying chemical reactions. (We recommend that you consult the full text of this article. Original title …)
Published on 29/10/2007
Related sheets
© All Right Reserved
ISSN 1826-1590 VAT: IT01286830334
powered by Infonet Srl Piacenza
Privacy Policy
This website and its related third-party services make use of cookies necessary for the purposes described in the cookie policy. If you want to learn more about cookies or how to disable them (either totally or partially), please see the cookie policy. By closing this banner, scrolling through this page, clicking on a link or continuing navigation in any other way, you consent to the use of cookies.
More informationOK

- A +
ExecTime : 1,9375