Chemical composition and Antioxidant activities of the ethanolic extract of Salvia Libanotica growing in Lebanon

摘要

The total phenolic and flavonoidal compositions of the ethanolic extract of salvia libanotica was determined using the (FC) and aluminum chloride spectrophotometric methods. Quantitative HPLC was used for the identification and quantification of each phenolic compound present in the extract. Chlorgenic acid, Naringenin , quercetin and hesperetin were found to be the major phenolic compounds of the extract. The antioxidant activity of the extract was tested using the DPPH scavenging assay. The extract has shown a strong scavenging activity with an IC 50 = 8.73 μg/ml compared to the synthetic antioxidant BHT (IC 50 = 91.40 μg/ml).