Browsing by Author "Uzun, Y."

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Allelopathic Potential of Macrofungi on Germinating Maize (Zea Mays L.) Grain
(Academic Journals, 2010) Uzun, Y.; Türker, M.; Kaya, A.; Demirel, K.; Işler, S.; Keleş, A.
The effect of methanol extracts of 10 macrofungi was evaluated on grain germination of maize (Zea mays L.). Germination percentage, radicle and plumule length and the level of carbohydrates and fatty acids were measured. Fungal metabolites inhibited germination up to 90.96%, plumule (97.77%) and radicle (92.83%) development. Plumule and radicle lengths were stimulated 35.26 and 10.60% in some assays, respectively. The fungal metabolites decreased the glucose (97.60%), sucrose (90.34%), fructose (96.85%), maltose (95.64%), oleic acid (97.50%) and linoleic acid (98.25%) levels, whereas increasing levels of the glucose (165.14%), sucrose (166.53%), fructose (83.18%), maltose (124.73%), oleic acid (6975.00%) and linoleic acid (5233.33%) were detected in some assays. It is concluded that macrofungi metabolites have commonly inhibitory effects on physiological and morphological processes of germinating maize grain except for considerable increases in the some parameters investigated. © 2010 Academic Journals.
Analysis of Trace Metal Levels in Wild Mushrooms
(Asian Journal of Chemistry, 2011) Kaya, A.; Genccelep, H.; Uzun, Y.; Demirel, K.
Three macro elements and nine trace elements contents of 30 wild edible mushrooms collected from Kahramanmaras province of Turkey, were analyzed. The minimum and maximum heavy metal amounts of mushrooms were analyzed as mg/g dry weight for Ca (0.072-8.32), Mg (0.33-6.56), K (8.11-28.15) and as mg/kg for Fe (65.56-7156), Zn (13.18-230.85), Cu (4.30-84.67), Cr (0.77-80.03), Mn (5.15-91.21), Pb (not detected-3.10), Ni (0.79-174.15), Cd (0.00-8.67) and Co (0.00-10.92). The potassium content was found to be higher than those of the other minerals in all mushrooms, studied and Morchella deliciosa was found to have the highest Fe, Cr, Mn, Pb, Ni and Co concentrations among the analyzed species.
Antimicrobial Activity of Three Macrolepiota Species From Turkey
(Chemical Publishing Co., 2008) Dulger, B.; Hacioglu, N.; Aydin, G.; Uzun, Y.
Three Macrolepiota species (M. heimii, M. rachodes and M. puellaris) were tested for their antimicrobial activity by using the disc diffusion method. The ethanol extract from the fruit bodies of mushrooms were assayed against 16 microorganisms. In comparison with the test antibiotics amikacin, chloramphenicol and nystatin, the ethanol extract obtained from M. heimii presented significant activity against Micrococcus species and Citrobacter freundii. The extracts have weak anti-yeast activity against the yeast cultures.
Contributions To the Macrofungi Flora of Gümüşhane Province
(2006) Uzun, Y.; Keleş, A.; Demirel, K.
Some macrofungi specimens were collected from Gümüşhane province between 2001 and 2003. As a result of field and laboratory studies, 105 taxa belonging to 2 classes and 24 families were identified. These taxa are presented in a list. Of the 105 taxa, 14 are new records for the mycoflora of Turkey. © TÜBİTAK.
Health Attributes of Ethnic Vegetables Consumed in the Eastern Anatolia Region of Turkey: Antioxidant and Enzyme-Inhibitory Properties
(Elsevier B.V., 2016) Dalar, A.; Uzun, Y.; Turker, M.; Mukemre, M.; Konczak, I.
Background Four ethnic vegetables from the Eastern Anatolia region of Turkey, Malva neglecta Wallr., Plantago lanceolata L., Cichorium intybus L. and Eryngium bornmuelleri Nab. are commonly used by the local population for food preparation. This study aimed at understanding their potential health attributes. Methods Hydrophilic extracts obtained from roots, stems, leaves and flowers were evaluated for their antioxidant capacities [total phenolics (TP), ferric reducing antioxidant power (FRAP), and oxygen radical absorbance capacity (ORAC) assays] and suppression of two isolated key enzymes relevant to metabolic syndrome: α-glucosidase and pancreatic lipase. Phytochemical composition of extracts was investigated by high performance liquid chromatography (HPLC) and liquid chromatography mass spectrometry (LC-MS). Results The evaluated extracts exhibited pronounced antioxidant capacities, comparable to those of common spices and herbs, and effectively suppressed the activities of isolated α-glucosidase and pancreatic lipase enzymes. These activities correlated well with total phenolics contents. Plantago lanceolata was an effective inhibitor of α-glucosidase and C. intybus of pancreatic lipase enzyme. High performance liquid chromatography mass spectrometry analyses revealed the dominance of luteolin glycosides in P. lanceolata. The same compound was present in C. intybus, where it was accompanied by significant amounts of cichoric, chlorogenic and caftaric acid. Malva neglecta and E. bornmuelleri contained the lowest levels of phenolic compounds and exhibited the lowest antioxidant and enzyme inhibitory activities. Conclusions Among the investigated ethnic vegetables, P. lanceolata and C. intybus represent a valuable source of antioxidant phytochemicals of phenolic nature that modulated in vitro the activities of digestive enzymes. These ethnic food sources diversify diet and enhance health attributes of foods. © 2016 Korea Food Research Institute
Macrofungal Diversity of Ardahan and Iǧdır Province (Turkey)
(Asian Network for Scientific Information, 2010) Uzun, Y.
The present study is based on the macrofungi specimens, collected from different biotope of Ardahan and Iǧdi{dotless}r provinces of Turkey, between 2000-2001. As a result of field and laboratory studies, 78 taxa were identified and the previous reports on 61 taxa in the study area were added. Total 139 taxa belonging to 35 families in Myxomycetes, Pezizomycetes and Agaricomycetes were presented as a list. Seventy eight of them are new for the province. Cortinarius uraceus Fr. (Cortinariaceae) is determined as a new record for Turkish macromycota. © 2010 Asian Network for Scientific Information.
Macrofungi of Aǧri Province
(2002) Demirel, K.; Uzun, Y.; Kaya, A.
Macrofungi were collected during field trips in the Aǧri district between 1997 and 2000. At the end of field and laboratory studies. 45 taxa belonging to 3 classes and 18 families were identified. Three of these. Pluteus ephebeus (Fr.:Fr.) Gill. (Pluteaceae). Coprinus auricomus Pat. (Coprinaceae) and Inocybe tigrina Heim. (Cortinariaceae), are new records for the mycoflora of Turkey.
Macrofungi of Erzurum Province
(2003) Demirel, K.; Kaya, A.; Uzun, Y.
This study was conducted on macrofungi specimens collected from Erzurum province between 1997 and 2000. As a result, 114 macrofungi species belonging to 29 families and two classes were identified. Two of them, Melanoleuca humilis (Pers.: Fr.) Sing. and Tricholoma lascivum (Fr.) Gill. (Tricholomataceae), are new records for the macrofungi flora of Turkey.
Macromycetes of Genç District (bingöl-Turkey)
(2009) Uzun, Y.; Kaya, A.; Keleş, A.; Akçay, M.E.; Acar, I.
The study was conducted on the macrofungi specimens collected from Genç district (Bingöl-Turkey) between 2006-2009 to determine the macromycota of the region. Seventy eight taxa belonging to 23 families in Ascomycetes and Basidiomycetes classes were identified. Agaricaceae, Tricholomataceae and Strophariaceae are the most crowded families in the region. All of the taxa are new for the district. Omphalotus olivascens var. olivascens (Marasmiaceae) is determined as new record for Turkish macromycota. © 2009 Asian Network for Scientific Information.
Six Typhula Spp. Newly Recorded From Türkiye
(Mycotaxon Ltd, 2022) Kesici, S.; Akçay, M.E.; Sadullahoğlu, C.; Uzun, Y.
Macrofungi samples were collected during routine field studies in 2019 within the borders of Hakkari and Şırnak provinces, Türkiye. Six Typhula species were collected for the first time from Türkiye: T. corallina, T. crassipes, T. incarnata, T. micans, T. phacorrhiza, and T. quisquiliaris. Detailed descriptions of the species are presented with morphological and microscopic illustrations and ecological information. © 2022 Mycotaxon Ltd. All rights reserved.
Some Poisonous Fungi of East Anatolia
(2004) Demirel, K.; Uzun, Y.
This study was carried out on some poisonous macrofungi samples collected from the East Anatolia region. As a result of field and laboratory studies, 36 poisonous taxa belonging to Ascomycetes and Basidiomycetes were identified. The identified taxa are given with their distributions, habitat and substrates, collection dates and collectors' numbers. One of the species, Amanita eliae Qúel. (Amanitaceae), is a new record for the poisonous fungi of Turkey. © TÜBITAK.
Two New Arrhenia Fr. Records for the Macrofungi of Turkey
(2008) Kaya, A.; Uzun, Y.; Demr̊el, K.; Karacan, I̊.H.
Arrhenia rickenii (Hora) Watling and Arrhenia spathulata (Fr.) Redhead (Tricholomataceae) were recorded for the first time from Turkey. © TÜBİTAK.
Two New Records of Phallales for the Mycoflora of Turkey
(2004) Demirel, K.; Uzun, Y.
The macrofungi species Phallus hadriani Vent.: Pers. and Mutinus caninus (Hud.: Pers.) Fr. (Phallaceae) have been recorded for the first time from Turkey. Descriptions based on their macroscopic and microscopic features are given. © TÜBITAK.