Browsing by Author "Kalmis E."

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    Antimicrobial activity of two wild mushrooms Clitocybe alexandri (Gill.) Konr. and Rhizopogon roseolus (Corda) T.M. Fries collected from Turkey
    (2006) Solak M.H.; Kalmis E.; Saglam H.; Kalyoncu F.
    Two edible wild mushrooms, namely Clitocybe alexandri (Gill.) Konr. (Tricholomataceae) and Rhizopogon roseolus (Corda) T.M. Fries (Rhizopogonaceae), collected from the southwest of Turkey, were tested for their antimicrobial activity by using the disc diffusion method. The ethanol, methanol, diethyl ether, water, ethylacetate and n-hexane extracts from the fruit bodies of mushrooms were assayed against 13 microorganisms. In comparison with the test antibiotics penicillin, novobiocin, nalidixic acid and ampicillin, the methanol extract obtained from the two mushrooms presented significant activity against E. coli, Bacillus subtilis and Enterobacter aerogenes. On the other hand, the ethylacetate extract from C. alexandri was found to be active against Candida albicans and Saccharomyces cerevisiae, whereas the ethanol extract of Rhizopogon roseolus was active against Saccharomyces cerevisiae. This research has shown that various extracts obtained from two macrofungi could be used in vitro to inhibit the growth of some important bacteria and fungi. Copyright © 2006 John Wiley & Sons, Ltd.
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    Feasibility of using olive mill effluent (OME) as a wetting agent during the cultivation of oyster mushroom, Pleurotus ostreatus, on wheat straw
    (2008) Kalmis E.; Azbar N.; Yildiz H.; Kalyoncu F.
    In this study, cultivation of oyster mushroom, Pleurotus ostreatus, on wheat straw substrate containing tap water and olive mill effluent (OME) mixture containing varying volume of OME was studied in order to investigate the feasibility of using OME as an alternative wetting agent and OME's impact on some fundamental food quality characteristics of mushrooms. Time period for mycelial colonization, primordium initiation and first harvest were comparatively evaluated with the control group. It was shown that the use of OME and tap water mixture consisting of OME up to 25% volumetrically was possible for the purpose of commercial mushroom production. Experimental results obtained from substrate containing 25% OME mixture showed no statistically significant difference compared to control group. The negative effects of increasing volume of OME in the mixture were also indicated by bioefficiency, which was found to be 13.8% for substrates wetted with 100% OME, whereas bioefficiency was 53.6% for control group. Increasing volume of OME in the mixture resulted in deformation of fruit body shape, whereas no significant difference in food quality was observed due to the higher amount of OME. This work suggested that the use of OME up to 25% as moisturizer could be considered, especially for the locations having significant number of olive mills and mushroom producers, both as an environmentally friendly solution for the safe and ecological disposal of OME and a practical way for recovering OME's economic value thereby. © 2006 Elsevier Ltd. All rights reserved.
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    Biological decolorization of textile dyes from isolated microfungi
    (Triveni Enterprises, 2012) Biyik H.; Basbulbul G.; Kalyoncu F.; Kalmis E.; Oryasin E.
    In this study, biological decolorization of two textile dyestuff (Benazol black ZN and Cibacron black W-NN) was comparatively studied using 22 microfungi strains isolated from polluted industrial soil areas. The initial dye concentrations in the medium were 250 and 500 mg l-1. Benazol black ZN was the best decolorized by Haematonectria haematococca (HH1) (36.0%) and Cibacron black W-NN was the best decolorized by Aspergillus niger (AN1) (33.0%) at 250 mg l-1 dye concentration. At 500 mg l-1 dye concentration for two different dyes all microfungi strains used showed weak decolorization rates, maximum 13.0% for Benazol black ZN and 6.0% for Cibacron Black W-NN. © 2011 Triveni Enterprises.
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    Evaluation of Pleurotus ostreatus, P. sajor-caju and Ganoderma lucidum isolated from nature for their ability to decolorize synazol blue and synazol red textile dyes
    (Journal of Pure and Applied Microbiology, 2014) Seker D.; Kalyoncu F.; Kalmis E.; Akata I.
    Biological decolorization of Synazol Blue and Synazol Red were comparatively studied using three different wild-type white-rot fungi strains (Pleurotus ostreatus, P. sajor-caju and Ganoderma lucidum) isolated from nature. The initial dye concentrations in the medium were 250, 500 and 1000 mg/L, respectively. All the organisms studied decolorized Synazol Blue to varying degrees. At low dye concentration, fungi strains resulted in the best decolorization, but mycelia negatively affected from increasing dye concentrations.