• Chayanika Bharadwaj
• Prabha G Shetty

This study focuses on the antioxidant potential of two weeds, Alternanthera tenella and Leucas indica that are used for their medicinal properties since ages. The total antioxidant capacity of the ethanolic extracts was determined using phosphomolybdenum assay. The IC50 value for L. indica was 6.485±0.00103mg/cm3 and that for A. tenella was 17.27±0.00129 mg/cm3. The free radical scavenging activity was determined using DPPH assay. The IC50value for L. indica was found to be 2.737mg/cm3 and that for A. tenella to be 1.964mg/ cm3. The total phenolic content determined using Folin – Ciocalteu method was found to be 154.6± 0.156mg GAE /g for L. indica and 4.9 ± 0.067 mg GAE /g for A. indica. The reducing nature was determined using FRAP assay and Ferrozine assay. The reducing capacity measured by FRAP assay was 4.630±0.0006 mg Fe equivalent/g for L. indica and 2.080±0.0037 mg Fe equivalent/g for A. tenella. The ferric reducing capacity by ferrozine assay was 1.0186±0.0003 mg AE/g for L. indica and 0.4814±0.0318 mg AE/g for A. tenella. This study indicates that A. tenella and L. indica are both potential antioxidants. However, L. indica showed better antioxidant properties compared to A. tenella.

antioxidant, radical scavenging, phenolic content, reducing power, FRAP value.

"In-vitro antioxidant and free radical scavenging activity of Alternanthera tenella and Leucas indica.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.418-424, April-2019, Available :http://www.jetir.org/papers/JETIR1904861.pdf

"In-vitro antioxidant and free radical scavenging activity of Alternanthera tenella and Leucas indica.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp418-424, April-2019, Available at : http://www.jetir.org/papers/JETIR1904861.pdf