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...

A simple method to transform the easily available 1,8-cineole (1) into the more valuable compound seudenone, 3-methyl-2-cyclohexenone (4), a sex pheromone of Dendroctonus pseudotsugae Hopkins, is described. © 2000 Elsevier Science B.V. All rights reserved.

We examined multivariate evolution of 20 leaf terpenoids in the invasive plant Melaleuca quinquenervia in a common garden experiment. Although most compounds, including 1,8-Cineole and Viridiflorol, were reduced in home compared with invaded range genotypes, consistent with an evolutionary decrease in defense, one compound (E-Nerolidol) was greater in invaded than home range genotypes. Nerolido...

Cytochrome P450cin (CYP176A1) is a bacterial P450 isolated from Citrobacter braakii that catalyzes the hydroxylation of cineole to (S)-6beta-hydroxycineole. This initiates the biodegradation of cineole, enabling C. braakii to live on cineole as its sole source of carbon and energy. P450cin lacks the almost universally conserved threonine residue believed to be involved in dioxygen activation an...

Neuroprotective Effects of 1,8-Cineole on Apoptosis Inhibition and Bcl-2/Caspase-3 mRNA Expression in the Hippocampus Epileptic Pilocarpine Model Rats

Eucalyptus pulverulenta (Baby Blue Eucalyptus) originated from Australia is one of the rare species family (Myrtaceae) and well adapted to hilly regions India. Apart cut foliage utility plant, its leaves have a pleasant aroma like most members Myrtaceae. This study was designed extract essential oil using hydro distillation method. Four different types samples were used (viz. tender leaves, mat...

A microwave-assisted hydrodistillation protocol was modified to extract essential oils from leaves of Salvia triloba L. and Laurus nobilis L. The essential oils of these plants are generally obtained by hydrodistillation or steam distillation. The volatile compounds obtained by microwave-assisted hydrodistillation and hydrodistillation methods were analyzed by GC and GC/MS. Both distillation me...