January 2012
Optimization of light quality for production of alkaloid and polysaccharide in Dendrobium candidum Wall. ex Lindl.
The main bioactive substances of traditional medicine Dendrobium candidum are alkaloids and polysaccharides. A strategy is described for optimizing light quality to maximize the production of alkaloids and polysaccharides in D. candidum, so as to provide the basis for industrial production. Concentration of alkaloids and polysaccharides were studied by acid dye colorimetry and vitriol-phenol colorimetry,...
January 2012
Isolation and characterization of antimicrobial activity conferring component(s) from seeds of bitter gourd (Momordica charantia)
Momordica charantia, a commonly used vegetable in Pakistan, has been known for its medicinal importance to cure diabetes but its antimicrobial activity has not been explored yet. Present study was designed to investigate antimicrobial activity of M. charantia seed extracts against mammalian and poultry pathogens. Buffered saline, ethanol, n-hexane, petroleum ether based seed extracts of M....
January 2012
Leaf essential oil, leaf methanolic extract and rose hips carotenoids from Rosa sempervirens L. growing in North of Tunisia and their antioxidant activities
Rosa sempervirens L. leaves and hips (fruits) were collected in two different sites in Northern Tunisia. The leaf essential oil was analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). Total phenols and flavonoids from the methanolic leaf extract were determined. Rose hips β-carotene content was evaluated by high-performance liquid chromatography (HPLC). The...
January 2012
Difference in structure and complement fixing activity of pectic polysaccharides from different plant parts of Echinacea purpurea (L.) Moench.
Water soluble pectic polysaccharide fractions were isolated from different parts of Echinacea purpurea in order to elucidate any structural and biological differences. Water extracts of stems, leaves, flower buds, open flowerheads, post fertile flowers and roots were purified by ion exchange chromatography and by gelfiltration. The polysaccharides consisted of a high amount of galacturonic acid, but also...
January 2012
Chemical composition of volatile compounds and antioxidant activities of essential oil, aqueous and ethanol extracts of wild Tunisian Ruta chalepensis L. (Rutacea)
The chemical composition of the volatile fractions of two populations of Ruta chalepensis L. (Rutaceae) collected, at the vegetative stage, from two areas of the South-East of Tunisia (Sdira and Thoujene) were analysed. The volatile fractions were extracted from the leaves by hydrodistillation or static headspace, then analysed by gas chromatography flame ionization detector (GC/FID) and gas...
January 2012
Investigation on flowering period of Asteraceae members in the Shanjan region Shabestar district, Northwest Iran (usage for honeybees)
Identification of plants distribution honey plants in an area are very important and necessary for the Apiculture and Nectar production and it also plays an important role in the pollination of flowering plants. The aim of this research was determine flowering duration and delay for three plants of Asteraceae family Shanjan Rangeland [Scorzonera phaeopappa (Boiss.), Senecio mollis (Willd.)...
January 2012
Extraction of cinnamon essential oil and identification of its chemical compounds
The essential oils is present in many plants particularly spices, it contain numbers of chemical compounds with different chemical structures. Due to this functional groupings that these compounds posses, they might act and exhibit different properties namely antimicrobial, stabilizing and flavouring properties. The objective of this work is to isolate the oily fraction from cinnamon bark (Cinnamomum...
January 2012
The haematological and biochemical effects of methanol extract of the seeds of Moringa oleifera in rats
The toxic effects of oral administration of the methanol extract of Moringa oleifera seed at 0,400, 800 and 1600 mg/kg was investigated in Wistar rats after 21 days treatment. Treatment with the extract did not significantly (P > 0.05) alter the levels of hemoglobin, red blood cell, packed cell volume, mean corpuscular volume and mean corpuscular hemoglobin concentration. In rats, also, the levels of...
January 2012
Protective effects of Chrysanthemi Flos extract against streptozotocin-induced oxidative damage in diabetic mice
The present study was aimed to evaluate the protective role of Chrysanthemi Flos extract (CFE) against free radical-mediated oxidative damage in liver and kidney of streptozotocin (STZ) - induced diabetic mice. Chrysanthemi Flos was extracted with methanol. Male ICR mice (n = 24) were divided into four groups. Diabetes was induced by STZ injection (ip) at a dose of 100 mg/kg. Animals of treated...
January 2012
Antimicrobial activity and essential oil composition of Thymus daenensis Celak from Iran
The composition and antimicrobial activity of the essential oil of Thymus daenensis Wild, an endemic species from Iran, was studied. The volatile oil obtained by hydrodistillation was characterized by the physico-chemical properties, gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) techniques. Thirty compounds, accounting for 97.5% of the total oil, were identified. The main...
January 2012
Genomic DNA extraction from seed induced callus and explants in Salvia L. species for utilization in secondary metabolite production
Salvia, the largest genus of Lamiaceae, includes about 900 species, widespread throughout the world. This genus is represented, in Turkish flora, by 88 species and 93 taxa, 45 of which are endemic. Some members of this genus are of economic importance since they have been used as flavoring agents in perfumery and cosmetics. Despite the medicinal potential of plants in Turkey being considerable, knowledge of this area...
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