Antibacterial and antioxidant activity of different extracts obtained from Withania somnifera (Ashwagandha)

Antioxidant activity of glycowithanolides from Withania somnifera.

Antioxidant activity of active principles of Withania somnifera, consisting of equimolar concentrations of sitoindosides VII-X and withaferin A, was investigated for their effects on rat brain frontal cortical and striatal concentrations of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX). Results were compared with effects induced by deprenyl, an agent with well docu...

Withania Somnifera (ashwagandha)—an Important Medicinal Plant

Methanolic extracts of Withania somnifera leaves, fruits and roots possess antioxidant properties and antibacterial activities

BACKGROUND Withania somnifera, also known as ashwagandha, is an important herb in ayurvedic and indigenous medical systems. The present study was designed to evaluate the antioxidant and antibacterial activities of an 80% aqueous methanolic extract of W. somnifera roots (WSREt), fruits (WSFEt) and leaves (WSLEt). METHODS Several assays were performed to determine the antioxidant properties of...

Induction and identification of autotetraploidy in ashwagandha (Withania somnifera Dunal.)

Seed treatment with aqueous colchicine solution was carried out for induction of autotetraploidy in ashwagandha in four accessions (Shilpa, Acc. 17, Bydyanath and MWS-327). Increased stomatal size and decrease in stomata density aided in detection of autotetraploids. Among four ashwagandha accessions tried, Acc. 17 was more responsive for the induction of autotetraploids. Colchicine at 0.5 per ...

Green synthesis and characterization of gold nanoparticles using leaf extracts of Withania somnifera (Linn.) (Ashwagandha)

In this study, a novel technique for biosynthesizing of gold nanoparticles (GNPs) using Withania somnifera as reductants and stabilizers is reported. Biosynthesis of anisotropic gold nanoparticles using ethanolic extract of Withania somnifera leaf and their potential as IR blockers has been demonstrated. The phenolic groups (–OH) residue was identified as the active functional group for gold io...