مشخصات پژوهش

عنوان	Evaluation of in vitro Antioxidant Activities and Antibacterial Potentials of Two Brown Algae Extracts; Lyengaria stellata and Padina boergesenii Inhabiting the Persian Gulf, Iran
نوع پژوهش	مقاله چاپ شده
کلیدواژه‌ها	Antibacterial activity, Antioxidant Potential, Persian Gulf, Seaweeds, Lyengaria stellate, Padina boergesenii
چکیده	In-vitro antioxidant activities of semi - purified methanolic extract of Lyengaria stellata and ‎Padina boergesenii were evaluated using DPPH radical-scavenging activity and reducing ‎power. Total phenolic contents (TPC) and total flavonoid contents (TFC) were also ‎investigated. The acetone fraction of L. stellata contained the highest value (126.04±8.65 mg ‎GAE/g) of TPC, and the highest concentration of TFC (94±0.13 and 82±0.09 mg GAE /g) ‎was obtained in ethanol fractions of Lyengaria stellata and Padina boergesenii, respectively. ‎The highest DPPH scavenging activity (88.5%) was observed in the acetone fraction of L. ‎stellata (1 mg/ml). The most significant reducing power was observed in the acetone fractions ‎of both seaweeds at 100 mg/ml concentration (1.130±0.040 and 0.839±0.010, respectively). ‎Ethanol and acetone fractions of L. stellata showed the greatest antibacterial activity ‎‎(29.6±0.5 and 28.0±0.7 mm, respectively) against Staphylococcus aureus. The minimum value ‎of MIC was observed in acetone fractions of both seaweeds against S. aureus (50.7 and 50.8 ‎‎µg/ml), while Salmonella enterica showed the highest resistance to seaweeds extracts ‎according to the– highest MIC values (>200 mg/ml) and the smallest IZ diameters. The ‎extract of both algae showed considerable antioxidant activity according to DPPH radical ‎scavenging activity and reducing power assays. ‎
پژوهشگران	مریم آخوندیان (نفر دوم)، پنگ چنگ فو (نفر اول)