We tested the ability of human subjects to distinguish between enantiomers, i.e. odorants which are identical except for chirality. In a forced-choice triangular test procedure 20 subjects were repeatedly presented with 10 enantiomeric odor pairs and asked to identify the bottle containing the odd stimulus. We found (i) that as a group, the subjects were only able to significantly discriminate ...

In Brazilian folk medicine, Tetradenia riparia (Hochst.) Codd. (Lamiaceae) is used to treat toothaches and dental abscesses and diseases induced by worms, bacteria, or fungi. This paper aims to investigate the chemical composition and the antibacterial effects of the essential oil obtained from Tetradenia riparia leaves (TR-EO) grown in Southeastern Brazil against a representative panel of oral...

Expressions for the calculation of rotatory strengths using algebraic diagrammatic construction (ADC) scheme polarization propagator in both length and velocity gauges have been implemented. This enables simulation electronic circular dichroism (ECD) spectra at ADC level up to third order perturbation theory. The ADC(n) methods produce comparable accuracy those obtained with coupled cluster cor...

Chemical investigations of L. stoechas subsp. luisieri and pedunculata essential oils were analyzed by GC-MS, the antimicrobial activity was performed against bacteria fungi isolated from food sources. The cytotoxicity oil in NHDF cells using MTT method. According to results, main compounds trans-α-necrodyl acetate (40.2%), lavandulyl (11%), trans-α-necrodol (10.4%), while fenchone (50.5%) camp...

Abstract Foeniculum vulgare Mill. is a medicinal plant, used as flavouring agent. The essential oil from F. has potential antimicrobial and insecticidal effects, can be in food industry order to protect the resources products against microbial pest’s contamination. aim of research was characterize volatile components by Gas Chromatography/Mass Spectrometry (GC/MS) Chromatography (GC-FID) observ...