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Phenolic Compounds And Antioxidant And Antimicrobial Properties Of Helichrysum Species Collected From Eastern Anatolia, Turkey, Sevi̇l Albayrak, Ahmet Aksoy, Osman Sağdiç, Ümi̇t Budak
Phenolic Compounds And Antioxidant And Antimicrobial Properties Of Helichrysum Species Collected From Eastern Anatolia, Turkey, Sevi̇l Albayrak, Ahmet Aksoy, Osman Sağdiç, Ümi̇t Budak
Turkish Journal of Biology
The antioxidant activity of the methanolic extracts of 4 plants from genus Helichrysum Mill. (Asteraceae) [H. arenarium (L.) Moench subsp. erzincanicum Davis & Kupicha, H. arenarium (L.) Moench subsp. rubicundum (C.Koch.) Davis & Kupicha, H. armenium DC. subsp. araxinum (Kirp.) Takht., and H. plicatum DC. subsp. pseudoplicatum (Nab.) Davis & Kupicha] was investigated with 2 complementary test systems, DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging and phosphomolybdenum assay. H. plicatum subsp. pseudoplicatum showed the highest level of total antioxidant activity (161.79 ± 0.3 mg ascorbic acid equivalent/g extract) in the phosphomolybdenum assay. H. arenarium subsp. erzincanicum showed the highest level of free radical …
Antioxidant And Antimicrobial Activities Of An Aquatic Plant: Duckweed (Lemna Minor L.), İlhami̇ Gülçi̇n, Ekrem Ki̇reçci̇, Ebru Akkemi̇k, Fevzi̇ Topal, Olcay Hi̇sar
Antioxidant And Antimicrobial Activities Of An Aquatic Plant: Duckweed (Lemna Minor L.), İlhami̇ Gülçi̇n, Ekrem Ki̇reçci̇, Ebru Akkemi̇k, Fevzi̇ Topal, Olcay Hi̇sar
Turkish Journal of Biology
Duckweed (Lemna minor L. Lemnaceae) is a widespread, free-floating aquatic macrophyte, a source of food for waterfowl and a shelter for small aquatic invertebrates. It grows quickly and reproduces faster than other vascular plants. The objective of this study was to determine the antioxidant, antiradical, antimicrobial, and anticandidal activities of duckweed using different in vitro methodologies. For evaluation of antioxidant and antiradical activities, 2,2´-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS.+) radical scavenging, 1,1-diphenyl-2-picryl-hydrazyl (DPPH.) free radical scavenging, total antioxidant activity by ferric thiocyanate, total reducing power by potassium ferricyanide reduction method, superoxide anion radical scavenging, hydrogen peroxide scavenging, and ferrous ions chelating activities were …
Antioxidant And Antibacterial Activities Of Ranunculus Marginatus Var. Trachycarpus And R. Sprunerianus, Gülen İrem Kaya, Nehi̇r Ünver Somer, Si̇bel Konyalioğlu, H. Tansel Yalçin, N. Ülkü Karabay Yavaşoğlu, Buket Sarikaya, Mustafa Ali̇ Onur
Antioxidant And Antibacterial Activities Of Ranunculus Marginatus Var. Trachycarpus And R. Sprunerianus, Gülen İrem Kaya, Nehi̇r Ünver Somer, Si̇bel Konyalioğlu, H. Tansel Yalçin, N. Ülkü Karabay Yavaşoğlu, Buket Sarikaya, Mustafa Ali̇ Onur
Turkish Journal of Biology
Hexane, ethyl acetate, methanol, and aqueous extracts of Ranunculus marginatus d'Urv. var. trachycarpus (Fisch. & Mey.) Azn. and R. sprunerianus Boiss. were tested in vitro for their antioxidant and antibacterial activities. Antioxidant activity of the extracts was determined by DPPH radical scavenging and Trolox equivalent antioxidant capacity assays. Methanol extracts showed the highest antioxidant activity in both assays. The total phenolics in the extracts were determined colorimetrically by using the Folin-Ciocalteau reagent. The total flavonoid content of the extracts was evaluated by a spectrophotometric method. The results obtained in the antioxidant activity tests were in positive correlation with the total …