The chemical composition of the essential oils obtained from the aerial parts of Helichrysum cymosum and H. fulgidum, from Tanzania, were analyzed by GC and GC/MS. A total of sixty-five compounds, representing 92.4% and 88.2% of the two oils, respectively, were identified. trans-Caryophyllene, caryophyllene oxide, beta-pinene, p-cymene, spathulenol and beta-bourbonene were found to be the main ...

A gas liquid chromatographic analysis of the essential oils from four new Greek Oregano clones revealed that carvacrol was the predominant constituent in all clones, representing extremely high percentages of the oils (from 79.5% in a clone named Athos to 93% in a clone named Olympus). The thymol content ranged from 0.04 to 0.55 percent among the tested clones. Phenols (carvacrol and thymol) an...

Significant selective enrichments of mutants defective in catabolic pathways can be achieved by exposure of pseudomonad cells to halogenated analogs of growth substrates. Between 3 and 95% of viable clones rescued from such enrichments have been defective in specific catabolic pathways. This has been demonstrated for eight different catabolic pathways for aromatic compounds in pseudomonads, in ...

Bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. (Xoo) is one of the most damaging diseases to rice across world. Various chemicals have been employed so far for management bacterial blight. On other hand, these compounds are ecosystem and an impact on non-target species such as humans animals. As a result, there need create new natural inhibitor BLB management. Deformylase (PDF) en...

A series of ruthenium compounds containing a pyrrole-ketone bidentate ligand, 2-(2'-methoxybenzoyl)pyrrole (1), have been synthesized and characterized. Reacting 1 with [(η⁶-cymene)RuCl₂]₂ and RuHCl(CO)(PPh₃)₃ generated Ru(η⁶-cymene)[C₄H₃N-2-(CO-C₆H₄-2-OMe)]Cl (2) and {RuCl(CO)(PPh₃)₂[C₄H₃N-2-(COC₆H₄-2-OMe)]} (3), respectively, in moderate yields. Successively reacting 2 with sodium cyanate and...

This study aimed to determine the characterization of essential oils in turmeric leaves and rhizomes using Chromatography-Mass Spectrophotometry (GC-MS). In this study, were obtained by steam distillation on seven months old Panjalu area. Based research results, there eight similar compounds, alpha-phellandrene, 1,3-cyclohexadiene 1-methyl-4-(1-methyl ethyl), P-Cymene, D-Lymonene, Eucalyptol, a...