October 2012
A review of traditional uses, phytochemical and pharmacological aspects of selected members of Clausena genus (Rutaceae)
The present review describes the morphological, traditional, phytochemical and pharmacological aspects of the most medicinally important members of Clausena genus.Clausena excavata, Clausena anisata, Clausena lansium, Clausena harmandiata, Clausena anisum-olens and Clausena dentata are the targeted species for investigation in this review. The selected members of the...
October 2012
In vitro antioxidant effects of Trigonella foenum graecum (L.) Fenugreek seed extract on sheep red blood cells
An extract from the seeds of Trigonella foenum graecum (Fenugreek) was evaluated for its protective effect against hydrogen peroxide (H2O2) induced oxidation in normal sheep erythrocytes (red blood cells (RBCs)). RBCs, treated with increasing concentrations of 30% H2O2 along with fenugreek seed extract (FSE) were analyzed for hemolysis and lipid peroxidation. Sheep RBCs treated with increasing...
October 2012
Effects of oligosaccharide elicitors from endophyitc Fusarium oxysporum Dzf17 on diosgenin accumulation in Dioscorea zingiberensis seedling cultures
The effects of the oligosaccharides prepared from endophytic fungus Fusarium oxysporumDzf17 on diosgenin accumulation in Dioscorea zingiberensis seedling cultures were investigated. Among three oligosaccharide fractions (DP2-5, DP5-8, and DP8-12), DP8-12 at concentration of 20 mg/L resulted in the highest diosgenin content and yield of the seedlings with the values individually as 1.28 mg/g dw and 18.05...
October 2012
Antifungal activity of stigmasterol, sitosterol and ergosterol from Bulbine natalensis Baker (Asphodelaceae)
Bulbine natalensis Baker. (Asphodelaceae) is indigenous to only southern Africa and is widely used as a skin remedy. B. natalensis contain secondary metabolites that have antibacterial properties. Phytosterols are a group of steroid alcohols and phytochemicals that occur naturally in plants. Aspergillus, Penicillium and Fusarium species are considered to be the most toxigenic...
October 2012
Isolation of chemical compounds from Sorbus tianschanica Rupr by high-speed counter-current chromatography
Sorbus tianschanica Rupr has been used as a pharmacologically valuable plant in Xinjiang to treat tuberculosis, asthma, cough and gastritis for a long time. Four compounds including three flavonoids and chlorogenic acid were isolated and purified by high-speed counter-current chromatography (HSCCC) from S. tianschanica Rupr. The two-phase solvent system composed of n-hexane - ethyl acetate - n-butanol -...
October 2012
Alkaloids and flavonoids from the air dried aerial parts of Citrullus colocynthis
From the air dried aerial parts of Citrullus colocynthis, two new alkaloids namely, 2-(nonan-8-one)-(1H)-4-quinolone and 2-(Nonan-8-one) 4-methoxy-quinoline were isolated. Two flavonoids, (2S)-3\, 4\ -methylenedioxy -5, 7-dimethoxy flavan and hispidulin 7- (6 – E – β coumaroyl – β – D glucopyranoside) were also extracted and identified. The structures were established by...
October 2012
Evaluation of antioxidant potential and antimicrobial studies of bark of medicinal plant, Mallotus tetracoccus (Roxb.) Kurz.
The present study was aimed to investigate the total phenols, flavonoids, carotenoids, antioxidant activity and antimicrobial activity of the bark extract of Mallotus tetracoccus(Roxb.) Kurz. Total phenols, flavonoids and carotenoids in the extract were found to be 55.35 ± 0.13 mg GAE, 260.3053 ± 1.413 mg QE and 0.182 ± 0.005 mg/g, respectively. The reducing power and metal chelating...
October 2012
Antibacterial activity of extracts of diploid and induced autotetraploid Tunisian populations of Trigonella foenum-graecum L.
Trigonella foenum-graecum L. is a medicinal plant known for its various pharmacological properties, including the anti-bacterial and the anti-microbial effects. This study aimed to determine and compare the antibacterial activities of extracts of two Tunisian T. foenum-greacum populations, diploid (2n=16) and its induced autotetraploid (4n=32). Aqueous and organic extracts (petroleum ether, ethyl acetate...
October 2012
Heavy and essential metals contents of Artemisia annua L. and Pyrus pashia Buch. Ham
Artemisia annua and Pyrus pashia are used to relieve and treat many human diseases due to their low side effects. They are rich source of biologically important elements, which may play an important role in the observed therapeutic uses of these plants. It is important to have a good quality of medicinal plants in order to protect consumers from contamination. Therefore, the aim of the present study was...
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