PHYTOCHEMICAL ANALYSIS, ANTIOXIDANT AND ANTIMICROBIAL ACTIVITIES OF THREE SAMPLES OF DRIED FIGS (FICUS CARICA L.) FROM THE REGION OF MASCARA

摘要

Ficus carica L. have always been known by their power to cure various diseases. This study aims to evaluate the antioxidant activity of twelve different extracts of three samples of dried ?gs. First, the extracts were tested for their polyphenolic, ?avonoid and tannin contents by the Folin–Ciocalteu, the aluminium trichloride and vanillin methods and high-performance liquid chromatography (HPLC) for more characterisation. The antioxidant activity was performed by using thre different methods; the 2,2-diphenyl-2-picrylhydrazyl (DPPH), Ferric reducing antioxidant power (FRAP) and total antioxidant capacity (TAC). The results showed that the methanolic extract of Sidi Bendjebbar sample presented a higher TPC value (458 mg GAE /g) while the acetonic and aqueous extracts of El-Keurt presented a higher values of TFC and CTC. In other hand, the methanol extract of El-Keurt sample exhibited the highest antioxidant capacity with an IC50 of 0.078 mg/ml. The antimicrobial activity of the extracts against various Gram positive and Gram negative bacteria was screened by the inhibition zone using the disc and diffusion assay, minimal inhibition concentration (MIC) by micro-well method allonwing to calculate the fractional inhibitory concentration (FIC). The ethanolic extracts of the two samples El-Keurt and Sidi Bendjebbar were the most effective extracts being able to inhibit the growth of the majority of the strains tested. Our study supported the use of these fruit as supplements for nutrient deficiencies and for combating diseases associated with oxydative damage or some microbial infection for better drug alternatives.