TAILIEUCHUNG - The antioxidant activity of some medicinal plants

The antioxidant properties of the methanol extracts of 10 medicinal plants were evaluated with the DPPH (1,1-diphenyl2-picryl hydrazyl) test, hydroxyl scavenging test, and lipid peroxidation assay. | Turk J Biol 32 (2008) 197-202 © TÜBİTAK The Antioxidant Activity of Some Medicinal Plants Prateek Kumar JAIN, Veerasamy RAVICHANDRAN, Simant SHARMA, Ram K. AGRAWAL Department of Pharmaceutical Sciences, Dr. Hari Singh Gour University, Sagar (.), 470 003 - INDIA Received: Abstract: The antioxidant properties of the methanol extracts of 10 medicinal plants were evaluated with the DPPH (1,1-diphenyl2-picryl hydrazyl) test, hydroxyl scavenging test, and lipid peroxidation assay. The methanol extract of Emblica officinalis was the most active according to the DPPH test, with an IC50 value of ± μg/ml, followed by Asparagus racemosus, with an IC50 value of ± μg/ml. The minimum free radical scavenging activity was shown by Zingiber officinale, with an IC50 value of ± μg/ml. The hydroxyl radical scavenging activity of the methanolic extracts of various plants was as follows: Asparagus racemosus > Terminalia chebula > Emblica officinalis > Centella asiatica > Withania somnifera > Terminalia bellerica > Glycyrrhiza glabra > Evolvulus alsinoides > Zingiber officinale > Andrographis paniculata. According to the lipid peroxidation assay the extracts of Emblica officinalis and Evolvulus alsinoides showed the greatest effectiveness, with inhibition values of ± and ± , respectively, at the 100-μg/m concentration (P Terminalia chebula > Emblica officinalis > Centella asiatica > Withania somnifera > Terminalia bellerica > Glycyrrhiza glabra > Evolvulus alsinoides > Zingiber officinale > Andrographis paniculata şeklinde sıralanmıştır. Lipit peraksidasyon denemesinde Emblica officinalis ve Evolvulus alsinoides en yüksek etkiyi göstermiştir. İnhibisyon değerleri 100 μg/ml konsantrasyonda 39,14 ± 2,1% ve 36,38 ± 1,3% şeklinde hesaplanmıştır (P Asparagus racemosus > Withania somnifera> Evolvulus alsinoides > Terminalia chebula > Centella asiatica > Terminalia bellerica > Andrographis paniculata > Glycyrrhiza glabra > .

• Sinh học
• DPPH assay
• Lipid peroxidation assay
• Medicinal plants
• Picryl hydrazyl
• Hydroxyl scavenging test
• Murraya paniculata
• DPPH radical scavenging assay
• Lipoxygenase inhibition assay
• Prolyl endopeptidase inhibition assay
• Respiratory burst inhibitory assay
• Evaluation of total phenolic
• Flavonoids content
• Relation with antioxidant properties
• Tagetes patula varieties
• BMC Chemistry
• Parkia speciosa Hassk
• FRAP assay
• Antibacterial activity
• Nutritional safety
• Food securit
• Natural antioxidant
• DPPH free radical scavenging assay
• The extracts prepared ginger skin
• Journal of Chemistry
• Smilax china
• Salix alba
• Total antioxidant potential
• Phytochemical screening
• Aluminium chloride
• Antioxidant activity
• DPPH scavenging activity
• Flavonoids and total phenolics
• Seed extracts derived from rice
• Carbohydrate polymers
• Potato starch
• Citric acid
• Molecular weight