Abstract
Introduction: Pterocarpus santalinus commonly known as Red sanders, is a member of the Fabaceae family. It is endemic to India and is classified as internationally endangered, with illegal harvesting posing a significant concern. The plant is known for its distinctive wood, which has great colour, beauty, and technical features. The red wood produces santalin, a natural dye that is used to colour pharmaceuticals and foodstuffs. The decoction made from the heartwood is said to have a variety of therapeutic characteristics in traditional medicine. It's been used to induce vomiting as well as treat eye illnesses, mental disorders, and ulcers.
 Aim: This study aimed to find the free radical scavenging activity of Pterocarpus santalinus ethanolic extract preparation.
 Materials and Methods: DPPH and H202 Assay was used to test the antioxidant activity of plant extract. Pterocarpus santalinus were purchased commercially from an herbal health centre,in Chennai. The obtained powder Pterocarpus santalinus stored in an airtight container. 5 gram of powder is mixed with 50 ml of ethanol and kept in the orbital shaker for 72 hours, after it has boiled in a heating mantle at 62-70℃ for 5-10 min. The extract is filtered using whatman filter paper 1.The filter extract again contracted using heating mantle.
 Results: The extract shows very good antioxidant activity for the P.santalinus extract by using DPPH and H202 Assay.
 Conclusion: The free radical scavenging activity of Pterocarpus santalinus ethanolic extract preparation was effective.
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