This study reports chemical composition of the essential oils and in vitro antioxidant, antimicrobial and cytotoxic activity of the volatile fraction, extracted using simulations steam distillation-solvent extraction (SDE) method, and methanolic extract from the stems and young leaves of Pterocarya fraxinifolia from Gilan, west-north of Iran for the first time. The extraction yield of volatile ...

Different techniques like "closed loop stripping" [CLSA], "purge and trap" [PTI], and continuous steam distillation extraction [SDE] were used to establish GC profiles of major histocompatibility complex-associated volatile constituents of human urine and statistically evaluated for reliability. Of the three methods investigated, PTI appeared to be superior for the detection of very volatile su...

R. G. Berger, K. Neuhäuser, and F. Drawert Institut für Lebensmitteltechnologie und Analytische Chemie, Technische Universität München, D-8050 Freising 12, Bundesrepublik Deutschland Z. Naturforsch. 41c, 963—970 (1986); received July 21, 1986 Polyporus durus, Basidiomycetes, Flavor, Lactones, Triglyceride The neutral volatile constituents produced by shake flask cultured mycelium of Polyporus d...

brassica napus l. and sinapis alba l. are two cruciferous species for which some medicinal uses are mentioned in the iranian, indian and chinese traditional medicine. seed oil of  b. napus has cathartic action, and is either used as such or after partial hydrogenation for cooking, shortening or as margarines. sees of s. alba have also cathartic action and some other medicinal uses but, because ...

Background & Aim: This research, order to study of extraction and investigation on the essential oil of Anthemis hyalina DC. were conducted.   Material & Methods: The volatile constituents of Anthemis hyalina DC. were isolated by hydro-distillation and analyzed by GC and GC/MS. In this study, samples were collected from Qazvin on June 2008.   Results & Discussion:...

A GC-MS-Selected Ion Monitoring (SIM) detection method was developed for simultaneous determination of four monoterpenes: (-)-menthone, (+)-pulegone, (-)-limonene and (+)-menthofuran as the main bio-active and toxic constituents, and four other main compounds in the volatile oils of Schizonepeta tenuifolia (ST) leaves and spikes at different harvesting times. The results showed that the method ...

Trypanocidal activity was found in the volatile oil of dried Dracocephalum kotschyi. GC-MS analysis determined that the major constituents of the oil were geranial (35.8%), C10H14O (26.6%), limonene (15.8%) and 1,1-dimethoxy decane (14.5%). In order to isolate the unknown biologically active monoterpene, fractionation of the volatile oil was carried out by silica gel column chromatography. The ...

 Stevia rebaudiana Bert (Asteraceae) is herbaceous plant with sweet leaves, which are the source of sweetener products. The present study focuses on effects of different combination of plant growth regulators on callus induction, callus cell growth and regeneration and volatile constituents from callus of stevia in tissue culture condition. The results of present study showed callus formation p...

The previous studies revealed that Equisetum arvense contained alkaloids, carbohydrate, proteins and amino acids, phytosterols, saponins, sterols, ascorbic acid, silicic phenol, tannin, flavonoids, triterpenoids, volatile oils many other biological active constituents. E. has been used as a folklore medicine for treatment of various conditions such tuberculosis, catarrh in the kidney bladder re...

The Ruta graveolens L. (Rutaceae) plant is used medicinally as a homeopathic remedy in various areas of the world. In this study, volatile oils were extracted from the areal parts of the plant which was collected from southern India, then investigated for its chemical constituents and antimicrobial activities. The volatile oils were extracted by hydrodistillation using a Clevenger apparatus and...