The quantities of trans-verbenol, myrtenol, and the pheromone, cis-verbenol, in the hindguts of males and females were found to increase in linear proportion following exposure to increasing concentrations of vapour of the host plant precursor, (-)-a-pinene. Males produced significantly more of these compounds than females. Differences between males and females in the ratios of compound product...

In Þeld tests of ßoral chemicals dispensed singly, alfalfa looper moths, Autographa californica (Speyer), were captured in traps baited with phenylacetaldehyde, -myrcene, or benzyl acetate. Cabbage looper moths, Trichoplusia ni (Hübner) were also captured in traps baited with phenylacetaldehyde,methyl salicylate, ormethyl-2-methoxybenzoate. In evaluations of binaryblends of those same compounds...

The phytotoxicity of the three major monoterpene constituents of the essential oil from leaves of Artemisia scoparia Waldst. & Kit. (redstem wormwood) was investigated. GC/GC-MS analysis revealed that the essential oil (yield 0.84%) is a complex mixture containing 19 monoterpenes, 7 sesquiterpenes and 15 other compounds--aliphatic alcohols, ketones, aromatic hydrocarbons and esters. The three m...

Multiple-funnel traps baited with exo-brevicomin and a mixture of cisand transverbenol were used to test the relative attractiveness #If myrcene and (-)-a-pinene to the mountain pine beetle, Dendroctonus ponderosae Hopkins, in a s tand of western white pine, Pinus mont icola Doug]. Traps baited with myrcene caught significantly more D. ponderosae than traps baited with (-)-a-pinene, irrespectiv...

The present work aimed to evaluate the insecticidal activity of Cymbopogon citratus essential oil and its major compounds (citral myrcene) on Anticarsia gemmatalis. oil, citral, myrcene, a mixture citral myrcene were tested at concentrations 0.1, 0.3, 0.5, 0.7, 0.9 % v/v, plus two negative controls (distilled water Tween-80® 0.5 v/v) positive control (novaluron 0.075 w/v). Insect mortality was ...

Monoterpenes with an unsaturated hydrocarbon structure are mineralized anaerobically by the denitrifying beta-proteobacterium Alcaligenes defragrans. Organic acids occurring in cells of A. defragrans and culture medium were characterized to identify potential products of the monoterpene activation reaction. Geranic acid (E,E-3,7-dimethyl-2,6-octadienoic acid) accumulated to 0.5 mM in cells grow...

The copolymerization of bio-renewable β-myrcene or β-farnesene with styrene was examined using an ansa-neodymocene catalyst, affording two series of copolymers with high styrene content and unprecedented syndioregularity of the polystyrene sequences. The incorporation of terpene in the copolymers ranged from 5.6 to 30.8 mol % (β-myrcene) and from 2.5 to 9.8 mol % (β-farnesene), respectively. NM...

Purpose: To investigate the anticancer potential of myrcene against oral cancer cells.Methods: The effect on cell growth were studied using CCK-8 proliferation andclonogenic assays, while Annexin V-FITC/PI and DAPI staining methods used for determination its apoptosis. Protein expression levels assayed by western blotting technique. Wound healing Transwell chamber assays to determine migration ...