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Articles by Fatih Kalyoncu
Total Records ( 3 ) for Fatih Kalyoncu
  Ilgaz Akata , Bulent Ergonul and Fatih Kalyoncu
  In this study, chemical compositions and antioxidant activities of 16 wild edible mushrooms (Agrocybe cylindracea, Amanita ceciliae, Armillaria mellea, Boletus reticulatus, Cantharellus cibarius, Chlorophyllum rhacodes, Coprinus comatus, Flammulina velutipes var. velutipes, Lactarius deliciosus, Lactarius salmonicolor, Pleurotus ostreatus, Polyporus squamosus, Rhizopogon roseolus, Russula anthracina, Suillus collinitus and Tricholoma myomyces) were investigated. Antioxidant properties of methanol extracts were studied by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging method. Among the mushroom extract Amanita ceciliae and Pleurotus ostreatus (96.16 %) showed the most potent radical scavenging activities at 4.51 and 2.72 mg mL-1, respectively. The lowest scavenging activity was exhibited by C. rhacodes (70.46%) at 2.35 mg mL-1.
  Pelin Gunc Ergonul , Bulent Ergonul , Fatih Kalyoncu and Ilgaz Akata
  The fatty acids of five wild edible mushroom species (Agrocybe cylindracea, Coprinus comatus, Lactarius deliciosus, Suillus collinitus and Tricholoma myomyces) collected from different regions from Anatolia were determined. The fatty acids were identified and quantified by gas chromatography and studied using fruit bodies. Fatty acid composition varied among species. The dominant fatty acid in fruit bodies of all mushrooms was cis-linoleic acid (18: 2). Percentage of cis-linoleic acid in species varied from 36.29-66.72%. The other major fatty acids were, cis-oleic, palmitic and stearic acids, respectively. Fatty acids analysis of the mushrooms showed that the unsaturated fatty acids were at higher concentrations than saturated fatty acids.
  Fatih Kalyoncu , A. Usame Tamer and Mustafa Oskay
  Many plant pathogenic fungi are the subject of intense study because they cause disease symptoms that have a severe negative effect on the yield or quality of tomatoes (Lycopersicum esculentum M.) and its products. The common fungi associated with tomatoes and tomato pastes were determined and compared to get information on whether the mould content of the tomato pastes originate entirely from the tomato or from the soil. Eighteen species which belong to 7 fungal genera (Alternaria, Aspergillus, Fusarium, Mucor, Penicillium, Rhizopus and Trichoderma) among 250 mould isolates were determined of tomatoes and home-made tomato pastes collected from Manisa Province and its surrounding (Turkey). Alternaria alternata was the most prevalent fungal species. Members of Aspergillus niger group represent 1/6th of all the identified species. Seven of the species are the types of species that may potentially produce mycotoxins.
 
 
 
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