Nest mounds of wood ants the Formica rufa group are built using conifer needles, small branches, other plant materials and soil. Conifer needles contain several mono sesquiterpenes. Thus, ant nests may act as terpene hotspots in forest soils. Some terpenes show antifungal activity thus cause small-scale heterogeneity fungal biomass. We compared concentrations biomass (ergosterol concentration) ...

Analysis of seasonal changes in the composition Scots pine oleoresin by 1H and 13C NMR spectroscopy was carried out. Due to favorable weather conditions (positive temperatures on days sampling throughout year) samples for each 12 months were obtained studied. Chloroform (CDCl3) solutions Eight resin acids identified quantified: abietic, dehydroabietic, isopimaric, levopimaric, neoabietic, palus...

background: the genus tanacetum (compositae) is represented by 26 species in the flora of iran, 12 of them are endemic. one report on the analysis of essential oil of tanacetum polycephalum boiss. species has been published. objective: aim of this study is to determine the chemical composition of the hydrodistilled oil of tanacetum pinnatum boiss. of iranian origin for the first time. methods: ...

abstract essential oils (eos) of achillea eriophora, extracted by hydrodistillation and their constituents were analyzed by gas chromatograph (gc) and gc/mass spectrometry using retention indices and fragmentation patterns. the antibacterial effects of the eo was assessed on several food-borne pathogens, namely staphylococcus aureus, bacillus cereus, escherichia coli o157:h7, salmonella enterit...

achillea millefolium belong to the asteraceae family and from genus achillea. in this study essential oils were extracted from all aerial parts via hydro distillation (hd) method by clevenger set . by using of gas chromatography/mass spectrometry ( gc-ms) technique the chemicals component essential oil were identified. about 41 components with were identified which encompassed 97.66 percent of ...

The present study investigated the chemical composition of the essential oil (EO) from aerial parts (flowering stage) of Achillea wilhelmsii C. Koch by GC-MS. In addition, the antioxidant activity of the EO as well as its antimicrobial activity against methicillin-susceptible and methicillin-resistant Staphylococcus aureus (MRSA) strains was tested. Antioxidant activity was measured by the abil...

The aim of the study was to evaluate the antibacterial activity of essential oil extracted from Chrysanthemum boreale (C. boreale) on Streptococcus mutans (S. mutans). To investigate anticariogenic properties, and bacterial growth, acid production, biofilm formation, bacterial adherence of S. mutans were evaluated. Then gene expression of several virulence factors was also evaluated. C. boreale...

Lippia dulcis is a sweet-tasting, woody herb but the sweetness is often mixed with a camphorous taste. Lippia dulcis oil from Brazil was found to be low in camphor (trace), whereas the oil from Mexico had considerable camphor (33.9%). The Lippia oil from Brazil was high in 6-methyl-5-hepten-2-one (10.5%), α-copaene (8.6%), (E)-caryophyllene (10.6%), bicyclogermacrene (6.6%), δ-cadinene (7.2%), ...

The objective of this study was to identify the major volatile compounds and their relative concentrations in flowers of different chrysanthemum cultivars and their wild relatives. The volatile organic components of fresh flowers were analyzed using a headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry. In total, 193 volatile organic components were detected;...

Volatile compounds from seven Salvia species and one interspecific hybrid growing at the Dallas Arboretum and Botanical Garden, Texas, US. Salvia coccinea, S. farinacea, S. greggii, S. leucantha, S. longispicata x farinacea, S. madrensis, S. roemeriana and S. splendens were investigated for their chemical compositions using a microdistillation technique. Volatiles were analyzed by gas chromatog...