The trans- and cis-linalool 3,6-oxide 6-O-beta-D-xylopyranosyl-beta-D-glucopyranosides isolated as aroma precursors from leaves for oolong tea

New glycosidic aroma precursors (1 and 2) of the main volatile constituents, trans- and cis-linalool 3,6-oxides (linalool oxides I and II), were isolated from oolong tea leaves (Camellia sinensis var. sinensis cv. Maoxie). The isolation was guided by an enzymatic hydrolysis with acetone powder prepa...

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Published inBioscience, biotechnology, and biochemistry Vol. 58; no. 9; pp. 1742 - 1744
Main Authors Moon, Jae-Hak, Watanabe, Naoharu, Sakata, Kanzo, Yagi, Akihito, Ina, Kazuo, Luo, Shaojun
Format Journal Article
LanguageEnglish
Published Tokyo Taylor & Francis 1994
Japan Society for Bioscience Biotechnology and Agrochemistry
Subjects
aroma precursors
Biological and medical sciences
Biotechnology
Carbohydrate Sequence
Chromatography, Gas
Coffee, tea and other stimulative beverage industries
enzymatic hydrolysis
feuille
Food industries
Fundamental and applied biological sciences. Psychology
Gas Chromatography-Mass Spectrometry
Glycosides - chemistry
hidrolisis enzimatica
hojas
hydrolyse enzymatique
leaves
Magnetic Resonance Spectroscopy
Molecular Sequence Data
Monoterpenes
Odorants - analysis
Plant Leaves - chemistry
precurseur d' arome
precursor de aroma
Spectrometry, Mass, Fast Atom Bombardment
Stereoisomerism
tea
Tea - chemistry
Terpenes - chemistry
Terpenes - isolation & purification
the
Volatile compound
Tea
Camellia sinensis
Purification
Investigation method
Dicotyledones
Angiospermae
Glucoside
Spermatophyta
Biosynthesis precursor
Aroma
Theaceae
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Summary:New glycosidic aroma precursors (1 and 2) of the main volatile constituents, trans- and cis-linalool 3,6-oxides (linalool oxides I and II), were isolated from oolong tea leaves (Camellia sinensis var. sinensis cv. Maoxie). The isolation was guided by an enzymatic hydrolysis with acetone powder prepared from fresh tea leaves (cv. Yabukita) followed by GC or GC-MS analyses. Chromatographic purification of hot water extracts of the tea loaves on active charcoal, Amberlite XAD-2, and Sephadex LH-20 columns as well as HPLC gave two new glycosides, trans- and cis-linalool 3,6-oxide 6-O-beta-D-xylopyranosyl-beta-D-glucopyranoisdes (1 and 2).
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ISSN:0916-8451
1347-6947
DOI:10.1271/bbb.58.1742