Antioxidant and antimicrobial activities of Tamarix aphylla (L.) Karst. growing in Tunisia
Abstract
This study was carried out with the objective to investigate antioxidant, antibacterial and antifungal activities of Tamarix aphylla (L.) Karst.
The antioxidant activities were evaluated by determining total phenolic content and IC50 values. The obtained results allowed us to note that total phenolic content of the different extracts varied from 5.13 to 22.02 mg GAE/g DW. Regarding the IC50 values, they varied from 0.81 to 19.92 mg/ml for DPPH. and from 12.16 to 21.23 mmol TE/g DW for ABTS+..
All the tested extracts showed remarkable antibacterial activities with MIC values ranged from 0.078 to 2.5mg/ml. The strongest inhibitions were observed for the ethyl acetate stems extract with MIC values of 0.156; 0.117; 0.117; 0.078 and 0.235 mg/ml against E. coli; P. aeruginosa; S. aureus; E. feacalis and Acinetobacter baumannii respectively.
T. aphylla extracts have not antifungal activities against Candida albicans, Candida krusei, Candida glabrata and Candida parapsilosis.
These findings suggest that T. aphylla may be considered as a potential sources of new antioxidant and antibacterial drugs.