The volatile constituents of taheebo (the dried inner bark of Tabebuia impetiginosa Martius ex DC) were isolated by three methods: solvent-assisted flavour evaporation (SAFE); steam distillation under reduced pressure, followed by continuous liquid–liquid extraction (DRP-LLE); and high-flow dynamic headspace sampling (including closed-loop stripping) (DHS). The extracts were analysed qualitativ...

the chemical composition of the volatile oil from aerial parts of hypericum triquetrifolium turra was studied by gc-ms. fifty components (97.1% of the total composition) were detected in the volatile oil. germacrene-d (21.7%), b-caryophyllene (18.3%), d-cadinene (6.4%), trans -b-farnesene (4.3%), a-humulene (3.8%), b-selinene (3.7%), γ-cadinene (3.3%) and trans -phytol (3.2%) were found to be t...

chemical composition of the essential oil of the fruit of ferula assafoetida l. obtained by steam distillation solvent extraction methodhas been studied by gc/ms for the first time. fifty-four components, comprising 96.9% of the total oil, were identified.epi-α-cadinol (23.15 %), germacrene b (10.98 %), α-gurjunene (6.18 %), (z)-1-propenyl secbutyl disulfide (5.89 %), 5-epi-7-epi-α-eudesmol (4....

Scutellaria is widely used in traditional medicine as a medical plant, in Asian countries, especially in China. It has been applied in treatment because of its sedative, antithrombotic, anti-inflammatory, antioxidant, and antiviral effects. Scutellaria condensata Rech. f. subsp. pycnotricha (Rech. f.) Rech. f. is a wild perennial plant which  grows in Iran. In this study, GC-FID and GC-MS were ...

Gas chromatography-mass spectrometry and multivariate curve resolution were applied to the differential analysis of the volatile components in Agrimonia eupatoria specimens from different plant parts. After extracted with water distillation method, the volatile components in Agrimonia eupatoria from leaves and roots were detected by GC-MS. Then the qualitative and quantitative analysis of the v...

The organic volatile flavor compounds in fermented stinky tofu (FST) were studied using SPME-GC/MS. A total of 39 volatile compounds were identified, including nine esters, seven alcohols, five alkenes, four sulfides, three heterocycles, three carboxylic acids, three ketones, two aldehydes, one phenol, one amine and one ether. These compounds were determined by MS, and conformed by comparison o...

A combined approach of subwindow factor analysis and spectral correlative chromatography was used to analyze the volatile components in Radix Flemingiae Macrophyllae and Flemingiae Latifolia Benth, one of its substitutes. After extraction by a water distillation method, the volatile components in Radix Flemingiae Macrophyllae and Flemingiae Latifolia Benth were detected by GC-MS. Then the quali...

the essential oils of the aerial parts of three different artemisia species (a.scoparia, a. diffusa, a. turanica ) growing wildly in the northeast of iran were analyzed by gc-ms. twenty-two, twenty-six, and thirteen components were identified in the essential oils of these plants, respectively. the major constituents of the oil ofa. scoparia were b-pinene (16.10%), carvacrol (13.81%), limonene ...