Polyphenolic Content, Antioxidant Potential and Antimicrobial Activity of Satureja boissieri

Abstract

Antioxidant activities of Satureja boissieri extracts were detected by using specific in vitro techniques. Standard antioxidant compounds such as ascorbic acid, BHA (Butylated Hydroxyanisole) and BHT (Butylated Hydroxytoluene) were used to compare with the results obtained from ethanol and water extracts of the plant samples. Both extracts presented high antioxidant actions on ABTS cation radical and DPPH free radical scavenging methods. Furthermore, the antimicrobial activity of S. boissieri was defined by using three fungi species, three Gram-positive and four Gram-negative bacteria species. The reducing power antioxidant activities of samples were measured by CUPRAC and FRAP techniques. Also, phenolic compounds of S. boissieri leaves were identified by UHPLC-ESI-MS/MS. The high concentration of hesperidin (5051 +/- 247 ppb) and rosmarinic acid (4364 +/- 214 ppb) was characterized quantitatively. According to the results, high phenolic content can be thought of as one of the responsible parameters for effective biological activity. Also, its flavonoid and phenolic contents are good natural sources for using in the food industry and pharmacological process.