Biological Activity Evaluation of Scorzonera tomentosa

This study, it was aimed to evaluate the phytochemical components, antimicrobial activity and antioxidant activity of 80% ethanol extract of Scorzonera tomentosa, an endemic species. The major component of the plant was determined by GC-MS analysis and was found as 2-Pentanamine (35.68%). When the antioxidant capacity of S.tomentosa was examined, DPPH and ABTS radical scavenging activities were determined to be quite high compared to the reference drug (IC50 values; DPPH: 517.0 ± 1.86 µg/mL; ABTS: 244.8 ± 0.94 µg/mL; reference drug: 1.313 ± 0.24 µg/mL). In addition, according to total phenol content (TPC) and total flavonoid content (TFC) analyses, it was determined that the plant is richer in flavonoids. The antimicrobial activity of this species is not at an effective level. More extensive studies with S.tomentosa may allow the plant to be used as a natural antioxidant.