Analysis and Sensory Evaluation of the Stereoisomers of a Homologous Series (C5–C10) of 4-Mercapto-2-alkanols
作者:Svenja Nörenberg、Christiane Kiske、Bastian Reichardt、Verena Andelfinger、Anne Pfeiffer、Franziska Schmidts、Wolfgang Eisenreich、Karl-Heinz Engel
DOI:10.1021/acs.jafc.7b03543
日期:2017.10.11
the medium-chain homologues (C7–C9) of the 4-mercapto-2-alkanol stereoisomers. Except for the C5 homologue, the lowest odorthresholds were determined for the (2R,4R)-configured stereoisomers. The variability in odor qualities was mainly determined by the chain length. None of the 4-mercapto-2-alkanol stereoisomers showed consistent odor qualities for all homologues.
New Volatile Sulfur-Containing Constituents in a Simultaneous Distillation−Extraction Extract of Red Bell Peppers (Capsicum annuum)
作者:Regula Naef、Alain Velluz、Alain Jaquier
DOI:10.1021/jf072493y
日期:2008.1.1
mercapto-alcohols 17, 18, and 30, the dithiols 19 and 28, the methylthio-thiols 20 and 21, and the thiophene-thiol 31) and the two new dithiolanes 10 and 29. All of them are structurally related to the unsaturated C7- and C9-ketones 1- 4. The free thiols were enriched using Affi-Gel 501 ( p-aminophenyl-mercuric acetate grafted on an agarose gel). The new compounds were confirmed by syntheses and were organoleptically