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Sabinene Hydrate (sabinene + hydrate)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Beyond six scents: defining a seventh Thymus vulgaris chemotype new to southern France by ethanol extraction

FLAVOUR AND FRAGRANCE JOURNAL, Issue 3 2009
Ken Keefover-Ring
Abstract The concept of plant chemotype has long been useful to describe secondary chemical phenotypes; however, the idea has practical limitations, especially when applied to ecological questions. This work reports the discovery of a new 1,8-cineole chemotype of Thymus vulgaris from a well-studied area in southern France. Multivariate statistical analysis of ethanol-extracted plant terpenes was used to describe this new chemotype and three others found at the site, and the results are used to discuss the chemotype concept. While the total amount of essential oils among these chemotypes showed no difference, the concentration of the main terpene differed significantly, with the 1,8-cineole and cis -sabinene hydrate chemotypes having the lowest amounts of their respective main components, and the linalool chemotype having the highest. The , -terpinyl acetate chemotype had intermediate levels of its main terpene. A factor analysis revealed four factors which explained almost 89% of the total variation in plant essential oils. Each factor represented a separate chemotype, including a cis -sabinene hydrate, linalool, ,- terpinyl acetate and the new 1,8-cineole chemotype. Although the concept of plant chemotype is still valid, better definitions are important when evaluating the influences of a plant's secondary chemistry on other community members. Copyright © 2009 John Wiley & Sons, Ltd. [source]

Comparative study of the leaf oil of Juniperus macropoda growing in Garhwal regions of Uttranchal (India)

FLAVOUR AND FRAGRANCE JOURNAL, Issue 5 2005
Divya Srivastava
Abstract Leaf oils of Juniperus macropoda collected from different localities (Hindolkhal and Mussorie) of Garhwal Himalaya (Uttaranchal) exhibited much variation in their yield and composition. Oil yields in the Hindolkhal and Mussorie samples were 1.2% and 0.52% respectively. In the Hindolkhal sample, , -elemene (42.5%) was the main constituent of oil, followed by t -sabinene hydrate (8.8%) and , -cubebene (7.9%), while in the Mussorie sample the main oil constituent was , -thujone (22.6%), followed by biformene (7.7%) and sabinene (5.8%). Copyright © 2005 John Wiley & Sons, Ltd. [source]

Enantiomeric composition of (E)- and (Z)-sabinene hydrate and their acetates in ,ve Origanum spp.

FLAVOUR AND FRAGRANCE JOURNAL, Issue 2 2005
Olga Larkov
Abstract 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 ,rst time in Origanum spp. Copyright © 2004 John Wiley & Sons, Ltd. [source]

The Essential Oils of the Greek Endemic Satureja horvatii ssp. macrophylla in Relation to Bioclimate

CHEMISTRY & BIODIVERSITY, Issue 8 2010
Antonia Dardioti
Abstract The essential oils of the Greek endemic Satureja horvatii subsp. macrophylla collected from 36 areas (among them, 23 are included in twelve sites of the EU network NATURA 2000) belonging to different bioclimatic types were studied. The total essential-oil content is negatively related to the altitude. The variation of the essential oil composition follows a geographical pattern, which is related to the bioclimatic belts along the taxon's range. Carvacrol dominates in areas with Mediterranean and Submediterranean bioclimate (mainly in the S and C part of the taxon's distribution), linalool or trans -sabinene hydrate, and/or borneol in the Submediterranean or Temperate Axeric bioclimates (in the N part of distribution), whereas thymol is found as main oil constituent in all three bioclimates. [source]