Evaluation of phenolic compounds of two Lygeum spartum L. cytotypes

Lygeum spartum represents a natural barrier in the Algerian high plateaus against the advance of sand and the desertification. The plant is of interest due to its tolerance to environmental stress. There are two levels of ploidy in this species; the diploid cytotype 2n = 16 which is confined in the locality of Ain Benkhllil and the polyploid cytotype 2n = 40 which thrives in semi-arid climates and has a large ecologic plasticity. The The aim of this study was the evaluation of the phenolic compounds and flavonoids in both cytotypes. The antioxidant activity was also measured with results showing differences in the level of phenolic compounds; thus, these compounds could serve as biomarkers to distinguish the two cytotypes. Key words: Lygeum spartum L, total phenols, flavonoids, 2,2-diphenylpicrylhydrazyl (DPPH), lipid peroxidation.