Characterization of aroma compounds of four brandies by aroma extract dilution analysis was written by Zhao, Yuping;Li, Jiming;Xu, Yan;Fan, Wenlai;Jiang, Wenguang. And the article was included in American Journal of Enology and Viticulture in 2009.Application In Synthesis of Ethyl 2-hydroxy-3-phenylpropanoate This article mentions the following:
Aroma compounds in two VSOP and two XO brandies were identified by gas chromatog.-mass spectrometry (GC-MS) and gas chromatog.-olfactometry (GC-O) after fractionation. A total of 109 aroma compounds were detected by GC-O in the four brandy samples on DB-wax and HP-5 columns. Aroma extract dilution anal. (AEDA) was further used to identify the most important aroma compounds Results showed that esters could be the most important aroma compounds, particularly Et esters. Various alcs., aldehydes, acetals, furan derivatives, lactones, and phenolic compounds were also identified. According to flavor dilution (FD) factors, the most significant aroma compounds were 2-methylpropanol, 3-methylbutanol, Et hexanoate, Et heptanoate, Et octanoate, β-damascenone, and trans-β-methyl-γ-octalactone (FD â?024). These compounds contributed to fruity, sweet, and coconut-like aromas, with the exception of 2-methylpropanol and 3-methylbutanol, which imparted a fusel note. 1,1-Diethoxyethane and cis-β-methyl-γ-octalactone, with cream- and coconut-like aromas, were the important aroma compounds (FD 1024) in two of the brandies. In the experiment, the researchers used many compounds, for example, Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0Application In Synthesis of Ethyl 2-hydroxy-3-phenylpropanoate).
Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Application In Synthesis of Ethyl 2-hydroxy-3-phenylpropanoate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics