antioxidant potential

ABSTARCT Solanum spirale is a tribal medicinal food plant which is used among the Adi tribes of Arunachal Pradesh, India. The methanol extract of shoot and berry were studied for their total phenolic (Folin-Ciocalteu’s method) and total flavonoid contents (colorimetric method) to study antioxidant potential ((DPPH & ABTS). The extracts were recorded to contain considerable amounts of phenolic content (18.64±2.12 mg GAE/g) in shoot and 11.72±1.42 mg GAE/g) in mature berry and flavonoid content of (5.29±1.01 µM RE/g) in shoot&50.52±1.03 µM RE/g) in mature berry and antioxidant potentials were calculated as 29.85±1.25 µM/g in the ABTS assay of shoot and38.27±1.33µM/g in the ABTS assay of berry while 45.4±0.37µM/g in the DPPH assay of shoot and 52±0.92 µM/g in the DPPH assay of mature berry respectively. This work also discourse traditional use of Solanum spirale among Adi tribes of Arunachal Pradesh. Keywords: Solanum spirale, total phenolic, flavonoid content, antioxidant potential, tribals, medicinal food, ethnobotany.

To evaluate phytochemical constituents and antioxidant potential of methanol aerial parts (leaf and stem) extract of Mentha arvensis L from Kashmiri Himalaya region. The extract shows the presence of flavonoids, saponins, alkaloids, steroids, carbohydrates, proteins, tannins and phenolics. The antioxidant activity of methanol aerial extract of Mentha arvensis L was evaluated by using 1,1-diphenyl, 2-picrylhydrazyl (DPPH) scavenging and reducing power assays. The total phenolic and total flavonoid content (mg/g) was found to be 672.11 and 283.1 respectively. The percentage inhibition of DPPH scavenging was found to be 81.33% at concentration of 0.5mg/ml. The reducing power was found to be 0.76 at 0.1mg/ml and increased to 2.42 at 0.5mg/ml. The results obtained revealed that methanol extract from aerial parts of Mentha arvensis L can be promising candidates for natural sources of antioxidants with high activity.