ANTIOXIDANT AND ANTIMICROBIAL PROPERTIES OF STEVIA LEAVES EXTRACTS AND SILVER NANOPARTICLES COLLOIDS

Abstract

Three extracts of Stevia rebaudiana (Bertoni) were prepared using various types of raw materials: leaves of plants grown ex situ, leaves of plants grown in vitro, callus culture formed on damaged leaves. Composition of the extracts, their activity in the synthesis of silver nanoparticles colloids, as well as antioxidant and antimicrobial properties of the extracts and the colloids were investigated.

Keywords

• Stevia leaves extract
• silver nanoparticles colloid
• antioxidant activity
• antimicrobial properties