Phytochemical, Antimicrobial and Antioxidant Activity of Andrographis alata (Vahl) Nees

This study has been undertaken to investigate the phytochemical, Antimicrobial and Antioxidant activity of Andrographis alata (Vahl) Nees.commonly known as Peria nangai (Tamil) which is used in Ayurveda to treat diseases like hepatitis, diabetes etc. in the present investigation solvents like, Petroleum ether, Methanol and Ethanol were used to extract the phytochemical content and in-vitro antimicrobial and antioxidant activity against certain bacterial species has been made.The results showed that the Methanolic extract had significant inhibiting activity of zone of inhibition.The antioxidant assay was done for the plant extract and free radical scavenging assay was made by measuring its capability for scavenging nitric oxide radicals, hydrogen peroxide radicals.Methanolic extract also showed highest effect in hydroxyl radical and nitric oxide scavenging assay.