Optical Isomers of Linalool and Linalool Oxides in Tea Aroma
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概要
- 論文の詳細を見る
The main aroma components of oolong and black tea, linalool and four diastereomers of linalool oxides (LO_s), were enantioselectively isolated by capillary gas chromatography, using a column coated with an optically active liquid phase, permethylated β-cyclodextrin. The R/S ratio varied among linalool and LO_s, and among the different types of tea, the ratio for a particular compound also being different. However, the complete patterns of R/S ratio were similar in the semi-fermented and fermented teas, respectively. Using a specific cultivar of black tea, the R/S ratio for each of the five compounds was compared in the free state in black tea with that of an aglycone of the glycoside in fresh tea leaves or in black tea. While the e. e. values of the compounds varied, those for a specific compound were similar, except for linalool, regardless of their free or combined state. These results show that LO_s are not directly transformed from linalool, but are formed enzymatically from glycoside precursors.
- 社団法人日本農芸化学会の論文
- 1994-11-23
著者
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Wang Dongmei
Laboratory Of Food Chemistry Department Of Nutrition And Food Science Ochanomizu University
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Wang Dongmei
Beijing Institute Of Transfusion Medicine
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Kubota Kikue
Laboratory Of Food Chemistry Department Of Nutrition And Food Science Ochanomizu University
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KAWABE Akira
Department of Biotechnology, Graduate School of Engineering, Osaka University
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Kubota K
Ochanomizu Univ. Tokyo Jpn
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Kubota K
Laboratory Of Food Chemistry Department Of Nutrition And Food Science Ochanomizu University
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Kobayashi A
Laboratory Of Bioresources Chemistry Faculty Of Agriculture Okayama University
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Morita Kae
Laboratory of Food Chemistry, Department of Nutrition and Food Science, Ochanomizu University
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Kobayashi Akio
Laboratory of Food Chemistry, Department of Nutrition and Food Science, Ochanomizu University
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Ando Kiyoshi
Laboratory of Food Chemistry, Department of Nutrition and Food Science, Ochanomizu University
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Morita K
Fukuoka Inst. Health And Environmental Sci. Fukuoka Jpn
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Morita K
Univ. Tokyo Tokyo
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Kobayashi Akio
Laboratory Of Bioresources Chemistry Department Of Agricultural Science Okayama University
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