Sanz, Cristina published the artcileProfiles of volatile compounds and sensory analysis of three blends of coffee: influence of different proportions of Arabica and Robusta and influence of roasting coffee with sugar, SDS of cas: 20662-83-3, the publication is Journal of the Science of Food and Agriculture (2002), 82(8), 840-847, database is CAplus.
One hundred and forty-six volatile compounds were identified and quantified using a static headspace sampler in 3 blends of coffee: Arabica/Robusta 80:20 (A80:R20) natural roasted coffee, Arabica/Robusta 20:80 (A20:R80) natural roasted coffee and Arabica/Robusta 20:80 with 50% of Robusta coffee roasted with sugar (A20:R80 50% Torrefacto). The different proportion of Arabica and Robusta coffee in the blend A80:R20 vs. A20:R80 influenced the amounts of 20 chem. families of volatile compounds Aldehydes, ketones, alcs., pyrroles, pyrazines, furans, thiazoles, thiophenes, esters, oxazoles, lactones, sulfur compounds, pyridines, alkanes, alkenes, phenolic compounds, benzenic compounds, acids, pyranones and terpenes were present in higher quantities in the sample containing 80% of Arabica coffee, whereas sulfur compounds were more abundant in the coffee with 80% of Robusta. Sensory differences were also found between the 2 blends of coffee in the burnt, caramel, nutty, earthy and roasty notes. Torrefacto coffee, widely consumed in Spain, is obtained by roasting coffee with sugar. Higher quantities of ketones, alcs., pyrazines, furans, pyridines, alkanes, phenolic compounds, pyranones and terpenes were found in the blend A20:R80 50% Torrefacto coffee vs. A20:R80 natural roasted coffee. These differences in the volatile fraction were perceived by our panelists in the intensities of the nutty, roasty, earthy, burnt and caramel notes.
Journal of the Science of Food and Agriculture published new progress about 20662-83-3. 20662-83-3 belongs to oxazolidine, auxiliary class Oxazole, name is 4,5-Dimethyloxazole, and the molecular formula is C5H7NO, SDS of cas: 20662-83-3.
Referemce:
https://en.wikipedia.org/wiki/Oxazolidine,
Oxazolidine | C3H7NO – PubChem