Phytochemical and antioxidant screening of some extracts of Juniperus communis L. and Juniperus oxycedrus L.

摘要

The content of phytochemicals, total phenolics, total flavonoids and antioxidant potential of extracts of Juniperus communis L. and Juniperus oxycedrus L. berries were determined. Ethanol, ethyl acetate and chloroform were used for the process of extraction. Phytochemical monitoring was based on already known methods, while in vitro antioxidant activities were done by DPPH assay. Phytochemical screening showed a wide spectrum of phytochemicals. Ethanolic extract of Juniperus communis L. possesses the strongest antioxidant activity (IC50 = 28.55 +/- 0.24 mu/ml), as well the higher contents of total phenolics, 189.82 +/- 0.27 mg of gallic acid equivalent per g of dried weight extract (mg GAE/g extract DW), and total flavonoids, 42.85 +/- 0.13 mg of rutin equivalents per g of dried weight extract (mg RE/g extract OW). The results indicated the potential application of the tested extracts as significant antioxidants.