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- W4322757034 abstract "Organosulfur compounds (OSCs) in coffee remain challenging to analyze by conventional gas chromatography (GC) due to their low concentrations amid coffee's complex matrix and susceptibility to chiral-odor influences. In this study, multidimensional GC (MDGC) methods were developed to profile OSCs in coffee. Conventional GC was compared to comprehensive GC (GC×GC) for untargeted OSC analysis in eight specialty coffees, and GC×GC was found to improve the fingerprinting of OSCs in coffee (50 vs 16 OSCs identified). Of the 50 OSCs, 2-methyltetrahydrothiophen-3-one (2-MTHT) was of high interest due to its chirality and known aroma contribution. Following that, a heart-cutting method for chiral GC (GC-GC) was developed, validated, and applied to the coffees. The mean enantiomer ratio of 2-MTHT was observed to be 1.56 (R/S) in brewed coffees. Overall, MDGC techniques allowed for more comprehensive analyses of coffee OSCs, from which (R)-2-MTHT was found to be the predominant enantiomer with the lower odor threshold." @default.
- W4322757034 created "2023-03-03" @default.
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- W4322757034 date "2023-03-02" @default.
- W4322757034 modified "2023-10-17" @default.
- W4322757034 title "Multidimensional Gas Chromatography of Organosulfur Compounds in Coffee and Structure–Odor Analysis of 2-Methyltetrahydrothiophen-3-one" @default.
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- W4322757034 doi "https://doi.org/10.1021/acs.jafc.2c08842" @default.
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