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The experiment was carried out using the shadow-dried aerial parts including leaves and shoots of Gontscharovia popovii collected in Fars province in order to investigate the polyphenolic compositions, antioxidant activity, total phenolic content and essential oil constituents. The result showed IC50 of 395.77 μg mL−1 and total phenolic content of about 20.01 mg g−1 gallic acid equivalent dry weight. It also showed a wild range of polyphenols such as; Gallic acid, catechin, chloregenic acid, rutin, vanillin, trans-Ferulic acid, sinapic acid, coumarin, hesperedin, quercetin, hesperetin, eugenol and carvacrol as the main detected polyphenols. Some major compounds were also detected through essential oil analysis, such as; 76.7% carvacrol, 4.25% γ-Terpinene, 3.8% p-Cymene and 2.4% (E)-Caryophyllene. Qualitative and quantitative analyses of chemical compounds of G. popovii was performed using HPLC, GC, GC/MS and microplate reader. [ABSTRACT FROM AUTHOR]

Gaillonia erianthais a member of family Paederieae (Rubiaceae). The essential oil ofG. erianthagrowing wild in south of Iran was obtained by hydrodistillation and analysed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). Antioxidante activity and polyphenolic content were identified by DPPH microplate method and HPLC-DAD, respectively. Twenty-two compounds were identified in the oil. The major volatile compounds were camphor (14.8%), octyl formate (14.7%), 1,8-cineole (10.9%), n-decane (8.1%), n-undecane (6.8%), n-dodecane (6.1%), n-nonane(5.4%) and α-agarofuran (5.2%). The antioxidant activity of the extract ofG. erianthawas found to be 786.57 μg/mL. It was found that the predominant phenolic constituents were chlorogenic acid (2.23 mg/g), catechin (0.37 mg/g), hesperidin (0.13 mg/g), trans-ferulic acid (0.12 mg/g), caffeic acid (0.051 mg/g), carvacrol (0.028 mg/g) and vanillin (0.021 mg/g), respectively. [ABSTRACT FROM PUBLISHER]

Lagoecia cuminoides L. belongs to the family of Umbelliferae (Apiaceae), and known also as common wild cumin. The aerial parts of L. cuminoides were collected at the flowering stage and dried, then the methanolic extract was analyzed for polyphenol compounds identified by HPLC-DAD and antioxidant activity (DPPH(2,2-diphenyl-1-picrylhydrazyl) radical scavenging assay). It was found that the predominant phenolic constituents were chlorogenic acid, hesperidin, rosmarinic acid, hesperetin and vanillin. The antioxidant activity of methanolic extract from L. cuminoides was found 1597 μg/mL in DPPH scavenging assay. There is no strict positive relationship between the polyphenolic content and antioxidant activity of extracts. [ABSTRACT FROM AUTHOR]

The essential oils of leaves and flowers of Tanacetum dumosum Boiss., an endemic medicinal shrub, were extracted by using hydrodistillation method and analysed using GC and GC–MS. A total of 43 and 44 compounds were identified in the essential oils from the leaves and flowers of T. dumosum, respectively. The major chemical constituents of leaves oil were borneol (27.9%), bornyl acetate (18.4%), 1,8-cineol (17.5%), α-terpineol (5.3%), cis-chrysanthenyl acetate (3.3%), camphene (2.7%) and terpinene-4-ol (1.9%), while the main components of the flower oil were isobornyl-2-methyl butanoate (41.1%), trans-linalyl oxide acetate (11.9%), 1,8-cineole (7.7%), thymol (4.2%), linalool (3.9%), camphor (2.9%), isobornyl propanoate (2.9%), α-terpineol (2.1%) and caryophyllene oxide (2.0%). Major qualitative and quantitative variations for some main chemical compounds among different aerial parts of T. dumosum were identified. High contents of borneol, bornyl acetate, 1,8-cineol and linalool in the leaves and flowers of T. dumosum show its potential for use in the food and perfumery industry. [ABSTRACT FROM AUTHOR]