Development of quantitative analytical method for volatile thiol compound with LC-ESI-MS as nonvolatile derivative by integrating a thiol-specific derivatization

Generally, volatile thiols are hard to be measured with electrospray-ionization-type LC-MS due to the volatility. Therefore, we here evaluated the pretreatment of their S-bimanyl derivatization by monobromobimane to enable the detection as nonvolatile derivative. Consequently, we successfully developed the convenient and efficient method through the quantitative analysis of 2-furanmethanethiol (volatile thiol odorant of coffee aroma) in coffee bean.

Automated summary

The study evaluated the pretreatment of volatile thiols by S-bimanyl derivatization using monobromobimane to enable detection as nonvolatile derivatives. A convenient and efficient method was successfully developed for the quantitative analysis of 2-furanmethanethiol (a volatile thiol odorant of coffee aroma) in coffee beans.