Kang, Suyoung; Yan, Han; Zhu, Yin; Liu, Xu; Lv, Hai-Peng; Zhang, Yue; Dai, Wei-Dong; Guo, Li; Tan, Jun-Feng; Peng, Qun-Hua; Lin, Zhi published the artcile< Identification and quantification of key odorants in the world's four most famous black teas>, Application In Synthesis of 78-70-6, the main research area is odorant black tea gas chromatog mass spectrometry; Black teas; GC-O; GC × GC-TOFMS; Key odorants; OAV.
Keemun, Assam, Darjeeling and Ceylon black teas are honored as the world’s four most famous black teas, and their excellent aroma qualities are well received by people around the world. In this study, aroma components in these four types of teas were analyzed by comprehensive two-dimensional gas chromatog. time-of-flight mass spectrometry (GC × GC-TOFMS) and gas chromatog.-olfactometry (GC-O) technologies. A total of 42 aroma-active compounds were ultimately identified, especially benzeneacetaldehyde, geraniol, (Z)-3-hexen-1-yl hexanoate, trans-β-ionone, cis-linalool oxide (pyranoid), hotrienol, and Me salicylate presented the strongest aroma strengths with pleasant scents in all tested teas. The quantification results indicated that 19 compounds including (Z)-3-hexenol, 1-octen-3-ol, linalool, phenylethyl alc., hexanal, benzeneacetaldehyde, limonene, heptanoic acid, (Z)-3-hexen-1-ol, acetate, benzyl alc., trans-linalool oxide (furanoid), hotrienol, 1-octen-3-one, 2-nonanone, (E)-2-octenal, nonanal, β-myrcene, 2-pentylfuran, and methylpyrazine were identified as the key compounds with odor activity values (OAVs) higher than 1.0 in the world’s four most famous black teas. Notably, the comparison of GC-O and OAV calculation results showed that Me salicylate (Ceylon), (E)-2-octenal (Assam), benzeneacetaldehyde (Keemun) and linalool and trans-linalool oxide (furanoid) (Darjeeling) might be the most definitive odorants in the corresponding tea categories.
Food Research International published new progress about Black tea beverages. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Application In Synthesis of 78-70-6.
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