Using real-time simultaneous gas- and particle-phase data, the condensation of naphthalene ?-caryophyllene oxidation products on a molecular level is discussed.

the volatile constituents of aerial parts of euphorbia aellenii rech.f. and e. microsciadea boiss. were analyzed by gas chromatography (gc) and gc-mass spectrometry (ms) methods. the main volatile constituents of e. aellenii were phytol isomer (47.3%), camphene (31.9%) and caryophyllene oxide (20.6%), while the major volatile components of e. microsciadea were trans-anethole (74.5%), limonene (...

Alternative storage pest control that is more environmentally friendly than the use of synthetic chemical pesticides to botanical from plant essential oils, including clove (Syzygium aromaticum) which contains main compounds eugenol and trans-caryophyllene. To study various mechanisms action oils as insecticides could in silico approach through molecular docking. This aims predict dominant bind...

Volatile components of three parts of Pimpinella tragium Vill. (Umbelliferae family) from Iran were investigated qualitatively and quantitatively for the first time. Essential oils were isolated by hydro-distillation from stems plus leaves, inflorescence and seeds of P. tragium individually. The plant materials were collected from Polour (Northeast of Tehran Province). The yields of the ...

Sesquiterpene composition at two sites representative of the southeastern U.S. is similar with β-caryophyllene and humulene dominating ozone reactivity.

This work aimed to investigate chemical composition of essential oils obtained from Zanthoxylum dissitum leaves and roots and their insecticidal activities against several stored product pests, namely the cigarette beetle (Lasioderma serricorne), red flour beetle (Tribolium castaneum) and black carpet beetle (Attagenus piceus). The analysis by GC-MS of the essential oils allowed the identificat...

Rumput roman extract is used as a natural food preservative. Its antimicrobial activity and constituents were investigated as part of an ongoing study to evaluate its quality and safety as a food additive. The constituents were analyzed by GC/MS, and 5 major constituents were isolated and identified as capillin, capillene, caryophyllene oxide, alpha-curcumene and methyleugenol using NMR analysi...