Synthesis of isotopically labelled thiol volatiles and cysteine conjugates for quantification of Sauvignon Blanc wine
✍ Scribed by Katherine R. Hebditch; Laura Nicolau; Margaret A. Brimble
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- French
- Weight
- 134 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The thiols 4‐mercapto‐4‐methylpentan‐2‐ol (4MMPOH), 3‐mercaptohexan‐1‐ol (3MH), and 3‐mercaptohexyl acetate (3MHA), which contribute to the aroma profile of Sauvignon Blanc, as well as other varieties of wine, have been synthesized with deuterium labels. The cysteinylated precursors of the thiols, 4‐(4‐methylpentan‐2‐one)‐L‐cysteine (4MMP‐cys) and 4‐(4‐methylpentan‐2‐ol)‐L‐cysteine (4MMPOH‐cys), found in grape must were also synthesized with deuterium labels. These deuterated compounds provide useful internal standards for the quantification of these thiols in wine using LCMS. Copyright © 2007 John Wiley & Sons, Ltd.