Camellia sinensis cultivated for tea has two varieties: Camellia sinensis var. sinensis (Chinese variety) and Camellia sinensis var. assamica (Assam variety). Japanese green teas are mainly produced from the Chinese variety, whereas Thai green teas are made from both varieties. The odors of Thai green teas made from each variety differ from each other and are also distinct from that of Japanese green tea. Here, we investigated the characteristics of the aroma of Thai green teas (Chinese and Assam varieties) and Japanese green tea (Chinese variety) following fractional distillation of their hexane extracts. Each fraction was analyzed by gas chromatography-olfactometry (GC-O) and gas chromatography-mass spectrometry (GC-MS). We found that the rich aroma characteristics of Thai green tea depend on whether the Chinese or the Assam variety is used.
HattoriS., TakagakiH., FujimoriT. (2003) Evaluation of Japanese green tea extract using GC/O with original aroma simultaneously input to the sniffing port method (OASIS). Food Science and Technology Research, 9, 350–352.
3.
OkaY., OmuraM., KataokaH., TouharaK. (2004) Olfactory receptor antagonism between odorants. The EMBO Journal, 23, 120–126.
4.
de MarchC.A., RyuS., SicardG., MoonC., GolebiowskiJ. (2015) Structure-odour relationships reviewed in the postgenomic era. Flavour and Fragrance Journal, 30, 342–361.
5.
HasegawaT. (2013) Aroma components of incense. Journal of Japan Association on Odor Environment, 44, 133–140.
6.
HasegawaT., NakataniK., FujiharaT., YamadaH. (2015) Aroma of turmeric: Dependence on the combination of groups of several odor constituents. Natural Product Communications, 10, 1047–1050.
7.
HasegawaT., ToriyamaT., OhshimaN., TajimaY., MimuraI., HirotaK., NagasakiY., YamadaH. (2011) Isolation of new constituents with a formyl group from the heartwood of Santalum album L. Flavour and Fragrance Journal, 26, 98–100.
8.
HasegawaT., FujitaT., TsukumoY., FujiharaT., JinguD., TakahashiA., NakajimaK. (2014) Investigation of the aroma profile of green tea leaves using organic synthesis and conventional analytical techniques. Journal of Food Science and Engineering, 4, 10–20.
9.
HasegawaT., TsukumoY., FujitaT., FujiharaT., TakahashiA., NakajimaK. (2016) The odor of matcha (Japanese powdered green tea) as the base note of green tea leaves. International Journal of Tea Science, 12, 58–65.
10.
HasegawaT., ShimadaY., SaitoH., FujiharaT., HaraguchiK., TakahashiA., NakajimaK. (2016) Characteristic aroma features of Tencha and Sencha green tea leaves manufactured by different processes. Natural Product Communications, 11, 1171–1173.
