Evaluation of the in vitro antioxidant activity in extracts of Uncaria tomentosa (Willd.) DC.
โ Scribed by C. Desmarchelier; E. Mongelli; J. Coussio; G. Ciccia
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 82 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0951-418X
No coin nor oath required. For personal study only.
โฆ Synopsis
Different extracts of U. tomentosa were tested in vitro for their antioxidant activity utilizing tert-butylhydroperoxide-initiated chemiluminescence in rat liver homogenates. Methanol fractions of both stem-bark and roots were capable of exerting antioxidant activity by this technique. The presence of different concentrations of bark and root methanol extracts also prevented TBARS production and free radical-mediated DNA-sugar damage.
๐ SIMILAR VOLUMES
Clove and nutmeg essential oils were analysed by GC and GCยฑMS. These oils, together with 16ยฑ18 components found to be present, were tested for antioxidant properties at ยฎnal concentrations of 0.05ยฑ 2.5 ร 10 4 ppm in an egg yolk-based thiobarbituric acid reactive substances (TBARS) assay and also und
The antioxidative effects of vegetable extracts were evaluated using linoleic acid emulsion and liposomal phospholipid suspension systems. First, the antioxidative activities of water, ethanol and 2% metaphosphoric acid extracts of the vegetables were investigated by measuring the rate of oxygen con
The in vitro antioxidant and free radical scavenging activity of the ethanol extract from Ginkgo biloba L. was examined in different systems. The extract showed hydrogen-donating ability, reducing power, copper-binding property, free radical scavenging activity in a H 2 O 2 /รOH-luminol system and i
The pharmacological activity of the dichloromethanol extract of Schinus molle L. (SM-DCM) was analysed in in vitro models. Preincubation of the isolated guinea-pig ileum or rat uterus preparations with the extract (100 mg/mL) abolished the contractile effects of histamine and serotonin respectively.