Akademik Veri Yönetim Sistemi
OXIDATION COMMUNICATIONS, cilt.38, ss.1978-1994, 2015 (SCI-Expanded)
For assessment of biological activities of extracts of stem and levaes of Zygophyllum eurypterum, a systematic procedure was adopted. Antioxidant activities were examined by evaluating DPPH radical scavenging activity, total phenolic contents (TPC), total flavonoids contents (TFC) and reducing power. The value of TPC observed was from 5.52 mg/100 g (n-hexane) to 98.25 mg/100 g (methanol) for leaves. Similarly the range of TFC was from 1.46 mg/100 g (n-hexane) to 24.41 mg/100 g (methanol) for stem and 0.70 mg/100 g (n-hexane) to 4.46 mg/100g (methanol) for leaves. The maximum values of IC50 were observed in n-hexane fraction, 80.41 for stem and 424.4 for leaves. Methanolic extracts show minimum values as 15.37 for stem and 84.61 for leaves. The % inhibition in linoleic acid system for stem was in the range of 26.7 (n-hexane) to 96 (methanol) and for leaves from 44.7 (n-hexane) to 87.5 (n-butanol). The % age inhibition in linoleic acid in leave and stem of Z. eurypterum was very close to standard BHT (92.8). Methanolic extract and residue show maximum value of antibacterial activity against Streptococcus (21 mm) and S. aureus (22 mm) for stem and n-hexane and residue against E. coli (21.1 and 20.4 mm). Similarly methanolic extracts (stem) show maximum value of antifungal activity against A. niger (19.2 mm) and n-hexane fractions show minimum values against C. albicus (9.8 mm). It was observed that methanolic extracts (stem) show minimum value of MIC against S. aureus (0.78 mg/ml) with maximum inhibition zone (22 mm). GC-MS analysis of essential oil of plant showed the presences of many compounds.