Research Information System
INTERNATIONAL JOURNAL OF PHARMACEUTICAL SCIENCES AND RESEARCH, no.1, pp.244-250, 2017 (ESCI)
Essential oils extracted from two Algerian endemic plants Lavandula antineae and Thymus algeriensis were analyzed by the GC, the results showed the presence of a large amount of oxygenated sesquiterpenes in both species. Total phenolics and flavonoids content were determined according to the Folin-Ciocalteu method and the aluminum trichloride method, the antioxidant activities of two types of extracts (ethyl acetate and n-butanol) from the plants were tested with the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. The rates of total phenolics and flavonoids present in L. antineae equal to 2,013 +/- 0,009 mg GAE/g of dry plant and 0.587 +/- 0,003 mg QER/g of dry plant material respectively. Thymus algeriensis has presented values of phenolics and flavonoids equal to 1.337 +/- 0,001 mg GAE/g and 0.339 +/- 0,001 mg QER/g of the dry plant. The ethyl acetate extract of L. antineae have presented the higher EC50 value (0047mg/ml).