T. Hofmann, P. Schieberle, W. Grosch
Jan 18, 1996
Citations
2
Influential Citations
82
Citations
Quality indicators
Journal
Journal of Agricultural and Food Chemistry
Abstract
Dilute ethereal solutions of mercaptoacetone (MA), 2-mercapto-3-butanone (MB), 3-mercapto-2-pentanone (MP), 2-methyl-3-furanthiol (MFT), and 2-furfurylthiol (FFT), either alone or in pairs, were stored at 6 °C. During a period of 10 days the oxidation of the thiols to the corresponding disulfides or mixed disulfides was followed by high-resolution gas chromatography/mass spectrometry. In diethyl ether MFT showed the highest oxidation rate, which decreased in the order MFT ≫ MA > MB = MP = FFT. After 1 day, mixed disulfides (e.g. MFT−FFT, FFT−MB) were detectable when pairs of the five thiols dissolved in diethyl ether were stored at 6 °C. MFT oxidized more slowly in dichloromethane than in diethyl ether, and it was stable in pentane. However, a heat treatment increased the oxidation rate of MFT dissolved in dichloromethane or pentane. Keywords: 2-Methyl-3-furanthiol; 2-furfurylthiol; disulfide formation