Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Antimicrobial Properties Of Silene Multifida (Adams) Rohrb. Plant Extracts, Ömer Ertürk, Hati̇ce Kati, Nuretti̇n Yayli, Zi̇hni̇ Demi̇rbağ
Antimicrobial Properties Of Silene Multifida (Adams) Rohrb. Plant Extracts, Ömer Ertürk, Hati̇ce Kati, Nuretti̇n Yayli, Zi̇hni̇ Demi̇rbağ
Turkish Journal of Biology
Specimens of Silene multifida (Adams) Rohrb. were collected in the vicinity of Yomra, Trabzon, Turkey. The fresh plants were air-dried and chopped. This material was extracted with cold chloroform (CHCl3). The chloroform extract was dissolved in dimethyl sulphoxide (DMSO), and, following column chromatography, 6 fractions were obtained. The serial dilutions (0.5, 1, 2, 4 and 10 mg/ml) of these fractions were prepared in 5% Tween 20. The fractions were tested for antimicrobial activity using the agar diffusion technique against 6 bacteria, Bacillus subtilis, Staphylococcus aureus, Esherichia coli, Pseudomonas aeruginosa, Enterobacter cloacae and Proteus vulgaris, and 1 fungus, Candida albicans. Fractions …
Biological Activities Of The Essential Oil And Methanol Extract Of Achillea Biebersteinii Afan. (Asteraceae), Özlem Bariş, Medi̇ne Güllüce, Fi̇kretti̇n Şahi̇n, Hakan Özer, Hamdullah Kiliç, Hakan Özkan, Münevver Sökmen, Tüli̇n Özbek
Biological Activities Of The Essential Oil And Methanol Extract Of Achillea Biebersteinii Afan. (Asteraceae), Özlem Bariş, Medi̇ne Güllüce, Fi̇kretti̇n Şahi̇n, Hakan Özer, Hamdullah Kiliç, Hakan Özkan, Münevver Sökmen, Tüli̇n Özbek
Turkish Journal of Biology
The present work examined the in vitro antimicrobial and antioxidant activities of the essential oil and methanol extract from Achillea biebersteinii Afan. (Asteraceae). The essential oil exhibited antimicrobial activity against 8 bacteria, 14 fungi and the yeast C. albicans, whereas methanolic extract remained inactive. The antioxidative capacity of the samples was evaluated by using DPPH (2,2-diphenyl-1-picrylhydrazyl) and b-carotene/linoleic acid assays. In both assays, the extract showed better antioxidative capacity than the oil. The extract reduced the stable free radical DPPH with lower IC50 value (89.90 µg/ml) than the oil (8900 µg/ml). In the b-carotene/linoleic acid assay, the samples were not …
Antimicrobial Activity Of Palustriella Commutata (Hedw.) Ochyra Extracts (Bryophyta), Semra İlhan, Fi̇li̇z Savaroğlu, Ferdağ Çolak, Cansu Fi̇li̇k İşçen, Fatma Zerri̇n Erdemgi̇l
Antimicrobial Activity Of Palustriella Commutata (Hedw.) Ochyra Extracts (Bryophyta), Semra İlhan, Fi̇li̇z Savaroğlu, Ferdağ Çolak, Cansu Fi̇li̇k İşçen, Fatma Zerri̇n Erdemgi̇l
Turkish Journal of Biology
The present study describes the antimicrobial activity of 2 extracts of Palustriella commutata (Hedw.) Ochyra, collected from the Sündiken Mountains, Eskişehir, Turkey. These extracts were first prepared with acetone and methanol solvents under reflux. The antimicrobial activity of the extracts was then assessed using the disc diffusion method against 11 bacteria, 1 yeast, and 8 moulds. The antimicrobial test results revealed that the acetone extract had a potential activity against 9 test bacteria. While some gram-positive bacteria tested were sensitive (Bacillus mycoides, B. cereus, B. subtilis, and Micrococcus luteus), all gram-negative bacteria tested (Klebsiella pneumoniae, Yersinia enterocolitica, Pseudomonas aeruginosa, Escherichia …
Antimicrobial Activities Of The Extracts Of Marine Algae From The Coast Of Urla (İzmir, Turkey), İnci̇ Tüney, Bi̇lge Hi̇lal Çadirci, Di̇lek Ünal, Atakan Sukatar
Antimicrobial Activities Of The Extracts Of Marine Algae From The Coast Of Urla (İzmir, Turkey), İnci̇ Tüney, Bi̇lge Hi̇lal Çadirci, Di̇lek Ünal, Atakan Sukatar
Turkish Journal of Biology
Methanol, acetone, diethyl ether, and ethanol extracts of 11 seaweed species from the coast of Urla were tested in vitro for their antimicrobial activities against Candida sp., Enterococcus faecalis, Staphylococcus aureus, Streptococcus epidermidis, Pseudomonas aeruginosa, and Escherichia coli with the disc diffusion method. Diethyl ether was the best solution for extracting the effective antimicrobial materials from the algae species used in this experiment, with the exception of D. linearis, for which ethanol was the most effective extraction solution. Diethyl ether extracts of fresh Cystoseira mediterranea, Enteromorpha linza, Ulva rigida, Gracilaria gracilis, and Ectocarpus siliculosus showed effective results against all test …