The essential oil, obtained by steam distillation of flowers, leaves and stems from Wisteria brachybotrys Sieb.et Zucc, collected in Japan was analyzed by gas chromatography (GC) and GC-MS. The important aroma-active compounds were also detected in the oil using GC-MS/Olfactometry (GC-MS/O) and aroma extraction dilution analysis (AEDA). As a result, sixty-eight compounds from flowers of W. brac...

For the quantitative analysis of phthalates in polymers, a thermal desorption (TD)-GC-MS method was compared with solvent extraction (SE)-GC-MS methods which require the long pretreatment procedures using large amount of harmful organic solvents. Calibration curves of TD-GC-MS showed good linearity (r(2)>0.9997) and low method detection limit (<30mg/kg with 9.0% RSD). Quantification results for...

the essential oil of stachys lavandulifolia vahl (lamiaceae) was isolated by hydrodistillation of the aerial parts of the plant, with a yield of 0.25%. the chemical composition of volatile oil was analyzed by capillary gc and gc/ ms. the main components were germacrene-d (13.2%), ?-phellandrene (12.7%), ?-pinene (10.2%), myrcene (9.4%), ?-pinene (8.4%) and z-?-ocimene (5.8%).

abderaz the composition of the essential oil obtained from the seeds of ammi majus l. which collected from province of khozestan in the southwest area of iran.the oils was analyzed by gas chromatography mass spectrometry (gc-ms). twenty - eight components have been identified in the extract of a. majus l. with toluene (3.766%), thymol (12.811%), carvacrol (37.811%) as major components, respecti...

background and objectives: helichrysum oligocephalum dc. (compositae)  is an endemic plant in iran that has been recommended by iranian traditional and folk medicine practitioners for gastrointestinal complaints. the plant is rich in essential oil and in the present investigation, the volatile composition of the species has been determined. methods: the light yellow essential oil from the aeria...

background &amp; aim: white horehound (marrubium vulgare l.) is a perennial medicinal plant of the family lamiaceae. the aim of this study was to identify of the chemical components of white horehound collected from isfahan.  experimental: the aerial parts of m. vulgare were collected from (kamu mountain) isfahan province central of iran, during 2014. the essential oils of samples were obtained...

background &amp; aim: essential oil of pennyroyal (mentha pulegium l.) has many applications in food, perfume and pharmaceutical industries. the aim of this study was to determine the content and chemical constituents of pennyroyal essential oil growing wild in southern iran. experimental: the aerial parts of the plant were collected around hajiabad, hormozgan province in 2013. the essential oi...

the essential oils of leaves and flowers of peucedanum ruthenicum (m. bieb.) rochel (umbelliferae) were prepared by hydrodistillation separately and analyzed by gc and gc-ms, and the composition of both essential oils were compared together. sixteen and eleven compounds were identified in leaves and flowers essential oils representing 100% and 96.4% of total oils, respectively. the major compon...