The chemical composition of the essential oil of the flowering aerial parts of Monarda didyma L. cultivated in central Italy was analyzed by Gas Chromatography/Mass Spectrometry (GC/MS). The major compounds of the oil were thymol (59.3%), p-cymene (10.3%), terpinolene (9.2%), δ-3-carene (4.4%), myrcene (3.7%), and camphene (3.4%). The essential oil was tested in vitro for its anti-germination a...

Muhammad Shaiq Ali*, Muhammad Saleem, and Viqar Uddin Ahmad H. E. J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan Z. Naturforsch. 54b, 807Ð810 (1999); received July 22, 1998 Lamiaceae, Zataria multiflora, Isopropyl Benzene Constituents, Structure Elucidation, NMR Data A new isopropyl benzene derivative named as zatatriol (5) and two synthetically known compoun...

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...

Background: In developing new products for skin care and wound treatment, biocompatibility plays a major role in the choice of ingredients. Thymol, an essential oil extracted from thyme plant, exhibits outstanding antibacterial properties, but more importantly, it proves to be much more compatible to skin cells in comparison to some conventionally used antibiotic drugs and chemicals. Objectiv...

background : thymol and carvacrol have previously demonstrated larvicidal activity against aedes aegypti (diptera: culicidae). in view of this fact, it was of our interest to obtain synthetic derivatives and evaluate their larvicidal ac­tivity on ae. aegypti larvae. methods : structural modifications were performed on thymol and carvacrol in an effort to understand the functional groups necessa...

Previous results of the comparison of colors given by indicators in alkaline buffers and pure aqueous sodium hydroxide have been repeated and confirmed. The electrometric determinations show that the sodium hydroxide was pure and gave theoretical values for the concentration of hydroxyl ion. The slight but distinct neutralising effect of dilute solutions of alkali has been measured electrometri...

This study focuses on the biological activities of eleven chitosan products with a viscosity-average molecular weight ranging from 22 to 846 kDa in combination with the most active monoterpenes (geraniol and thymol), out of 10 tested, against four plant pathogenic bacteria, Agrobacterium tumefaciens, Erwinia carotovora, Corynebacterium fascians, and Pseudomonas solanacearum. The antibacterial a...