Accumulation of vasicine and vasicinone in tissue cultures of Adhatoda vasica and evaluation of the free radical-scavenging activities of the various crude extracts

► Tissue cultures of A. vasica are advantageous for vasicine, vasicinone production. ► Water extracts exhibited higher free radical scavenging activities than Trolox. ► Represents a model system for biotechnological and pharmacological investigations.