Journal
FLAVOUR AND FRAGRANCE JOURNAL
Volume 20, Issue 2, Pages 109-114Publisher
WILEY
DOI: 10.1002/ffj.1386
Keywords
enantiomeric composition; (E)- and (Z)-sabinene hydrate; (E)- and (Z)-sabinene hydrate acetate; Origanum ramonense; Origanum dayi; Origanum majorana; Origanum vulgare; Origanum syriacum
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The enantiomers of (E)- and (Z)-sabinene hydrate and of (E)- and (Z)-sabinene hydrate acetate from extracts of Origanum ramonense Danin, O. dayi Post, O. majorana L., O. vulgare L. ssp. vulgare and O. syriacum L. ssp. syriacum were analysed by GC-MS with chiral and non-chiral capillary columns. The order of elution, the enantiomeric ratios and relative percentages of the four pairs of enantiomers were determined. The (1S)-enantiomers of (E)-sabinene hydrate and (E)-sabinene hydrate acetate were predominant in O. dayi, whereas in the other Origanum spp. the (1R)enantiomers were predominant. (Z)-sabinene hydrate acetate was not detected in O. syriacum, while the (1R)-enantiomer was present in an optically pure form in O. ramonense, O. majorana and O. vulgare; in O. dayi the enantiomeric purity was 97%. The enantiomeric distributions of (E)- and (Z)-sabinene hydrate and their acetates were determined for the first time in Origanum spp. Copyright (c) 2004 John Wiley & Sons, Ltd.
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