Lantadenes are pentacyclic triterpenoids present in the leaves of the plant Lantana camara. In the present study, in vitro antioxidant activity and free radical scavenging capacity of lantadene A was evaluated using established in vitro models such as ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picryl-hydrazyl (DPPH•), hydroxyl radical (OH•), nitric oxide radical (NO•), superoxide ...

The influence of extraction temperature, powder concentration, and extraction time on the antioxidant properties of aqueous ginger extract was investigated. The possibility of estimating the antioxidant properties of the extract from its absorbance and colour properties was also investigated. Results indicated that powder concentration was the most significant factor to consider in optimizing a...

BACKGROUND Porphyra tenera (Kjellman, 1897) is the most common eatable red seaweed in Asia. In the present study, P. tenera volatile oil (PTVO) was extracted from dried P. tenera sheets that were used as food by the microwave hydrodistillation procedure, after which the characterization of its chemical constituents was done by gas chromatography and mass spectroscopy and its antioxidant potenti...

the oxidative stress causes many diseases in human, therefore antioxidants have a specialposition in the medicinal chemistry. tyrosol is an important antioxidant with a plenty ofbiological properties. there are many strategies such as clustering single drug units in orderto develop new drugs. the cluster effect can increase drug effects relative to single drug unit.calixtyrosol is the novel clu...

Background & Aim:Caryopteris odorata is an aromatic shrub of family verbenaceae growing in tropical to subtropical regions. Various traditional applications of this plant have been documented guiding us to investigate the pharmacological activities and to further investigate the chemical composition. Experimental: Methanolic extract of aerial par...

the present study was carried out to determine the free radical scavenging properties of some plants, found in malaysia. the air-dried leaves of each plant (20 g) were soaked in distilled water (1:20; w/v) for 72 h at room temperature. collected supernatants were tested for free radical scavenging activity against the dpph and superoxide anion radical scavenging assays. all extracts were found ...

Different studies have demonstrated that the bioactivity of hydroxyflavones is due to their antioxidant and free radical scavenging activity. Recently, most interest has been devoted to structure-activity relationships; however, the main problems encountered in these studies are the low solubility of some hydroxyflavones in aqueous solution and the pro-oxidant character of the hydroxyl group at...

Article history: Received on: 27/07/2014 Revised on: 08/08/2014 Accepted on: 24/08/2014 Available online: 27/09/2014 The plant Hyptis is an effective medicinal herb and a well known medicinal plant in herbal world. The present study was aimed to investigate the α-amylase inhibition and antioxidant activities of chloroform fraction of H. suaveolens. Chloroform fraction of H. suaveolens was scree...

The free radical scavenging activities of n-hexane extract of the whole plant of Emilia sonchifolia was evaluated by employing various in vitro assay systems like DPPH radical scavenging activity, superoxide radical scavenging activity and hydrogen peroxide scavenging activity with IC50 values 180, 160 and 160 μg/ml respectively. The results of the study indicate that the n-hexane extract of th...

Quercetin is a typical flavonoid with diverse biological effects, attributable to its free radical scavenging activity. Bioavailability of quercetin aglycone and its glycosides is an important factor for its antioxidant activity in vivo. A severe limitation exists and is imputable to very poor absorption of quercetin when administered orally. To overcome this limitation, development of a value ...