Analysis of Iodine-like (Chlorine) Flavor-causing Components in Brazilian Coffee with Rio Flavor
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概要
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Green beans and roasted beans of coffee with Rio flavor were analyzed by gas chromatography-olfactometry to clarify the causal substances of Rio flavor in Brazilian coffee. In addition to 2,4,6-trichloroanisole (TCA) and 2,4,6-trichlorophenol (TCP), which are known as the main causal substances of Rio flavor, a new iodine-like flavor-causing compound, 2,6-dichlorophenol (DCP), was detected. The detected amounts of 2,6-DCP and 2,4,6-TCA were less than 0.1 and 0.1 ppb in Rio flavor-free coffee beans, 0.8 and 1.2 ppb in weak Rio flavored beans, and 3.0 and 2.6 ppb in strong Rio flavored beans, respectively. Musty and chlorine flavors were sensed more strongly in model coffee containing both 2,4,6-TCA and 2,6-DCP than in the coffee containing them individually. In the present study, 2,6-DCP was identified as a new causal substance of Rio flavor, and it was found that the presence of 2,4,6-TCA intensifies Rio flavor, as a synergy effect.
- 2011-07-01
著者
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Takui Takeji
Department Of Chemistry Faculty Of Science Osaka City Univerisity
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Takui Takeji
Departments Of Chemistry And Materials Science Graduate School Of Science Osaka City University
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Sato Kazunobu
Departments Of Chemistry And Materials Science Graduate School Of Science Osaka City University
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Sato Kazunobu
Department Of Chemistry Graduate School Of Science Osaka City University
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Kato Hiroyuki
Department Of Botany Faculty Of Science University Of Tokyo
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