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Distributions And Possible Roles Of Laminin, Fibronectin And Theirreceptor Subunits Integrin \Beta4 And \Alpha5 In Remodelling Of Extracellularmatrix During Decidualization In Rats, Ümi̇t Ali̇ Kayişli, Mevlüt Asar, Ramazan Demi̇r
Distributions And Possible Roles Of Laminin, Fibronectin And Theirreceptor Subunits Integrin \Beta4 And \Alpha5 In Remodelling Of Extracellularmatrix During Decidualization In Rats, Ümi̇t Ali̇ Kayişli, Mevlüt Asar, Ramazan Demi̇r
Turkish Journal of Biology
In the endometrium preparing for pregnancy, the stromal matrix components of the cells and their products begin structural differentiation due to endometrial receptivity. According to the hypothesis that 'extracellular matrix (ECM) proteins and adhesion molecules take roles in the structural differentiation as a result of endometrial decidualization', our aim was to determine the roles of ECM molecules laminin, fibronectin and adhesion proteins integrin \alpha5 and \beta4 in the decidulization and implantation by examining the emergence and changing distribution of these proteins. In this study, five experimental groups, consisting of 40 pregnant animals on pregnancy days 4-8, were used. Paraffin tissue …
Obtaining Biosurfactant From Olive Oil Mill Effluent (Oome) Usingpseudomonas Sp., Uğur Sidal, Nazi̇f Kolankaya, Cengi̇z Kurtonur
Obtaining Biosurfactant From Olive Oil Mill Effluent (Oome) Usingpseudomonas Sp., Uğur Sidal, Nazi̇f Kolankaya, Cengi̇z Kurtonur
Turkish Journal of Biology
Olive oil mill effluent (OOME) is one of the major pollutants produced by the agricultural industry in Mediterranean countries. The olive oil mills in these countries generate about 2-3 million tonnes of effluent annually. OOME is a black liquor containing a water-soluble fraction of ripe olives and water that is used in the process of olive oil extraction. This waste has a high mineral content and a chemical oxygen demand of 25.000-100.000 mg/l. depending on the olive oil extraction process used. This study presents a process for biosurfactant as rhamnolipid production by Pseudomonas sp. from olive oil mill effluent (OMME). …
Boron Accumulation In Carp Tissues ( Cyprinus Carpio L., 1758) In Damlakes Çötören And Kunduzlar (Kırka-Eskişehir), Şaki̇r Özkurt
Boron Accumulation In Carp Tissues ( Cyprinus Carpio L., 1758) In Damlakes Çötören And Kunduzlar (Kırka-Eskişehir), Şaki̇r Özkurt
Turkish Journal of Biology
Samples of water, bottom clay, plankton and fish were collected over a period of one year. The boron contents of the samples taken were determined in the laboratory. The differences and relationships in the obtained data were identified using various statistical methods. Boron gradually accumulates in the plankton, bottom clay and water of Çatören and Kunduzar. Boron collects in the tissues of the fish Cyprinus carpio in both lakes, in the musce, brain and liver in Çatören, and in the musce, liver and brain in Kunduzlar. Boron pollution is more serious in Çatören dam than in Kunduzlar. It was observed …
Transmission Of The Embryonic Stem Cell (Esc)Genome To Offspring And Sexual Development Inchimeric Mice From A Male Esc Line, Sezen Arat
Turkish Journal of Biology
This study was performed to determine the capability of embryonic stem (ES) cells at late passage number to form functional germ cells and to orientate the sexual development of chimeric mice produced from ES cell injection into embryos. When an R1 ES cell line was routinely cultured on mitotically inactivated feeder cells in culture medium supplemented with leukemia inhibitory factor (LIF), the colonies maintained an undifferentiated ideal ES cell morphology. When the ES cells were injected into 45 eight-cell embryos, 38 embryos (84%) combined with ES cells. Twenty-eight percent of the embryos transferred to recipients developed to term. Thirty percent …
Temporal And Spatial Determination Of Germinbiosynthesis In Wheat Tissues, Mahmut Çalişkan, Andrew C. Cuming
Temporal And Spatial Determination Of Germinbiosynthesis In Wheat Tissues, Mahmut Çalişkan, Andrew C. Cuming
Turkish Journal of Biology
In the current study, the biosynthesis of germin was determined in the organs of wheat embryos during germination. The temporal and spatial determination of germin protein was carried out by employing an anti-germin sera in gel-blot analysis. Germin was detected in the coleoptile, roots and vascular transition region of and 6-day-old germinated wheat seedlings. It was shown that the leaf tissue acquires germin accumulation only at the late stage of germination. The pellet fraction of protein homogenate obtained from embryos at different ages revealed higher germin accumulation than the supernatant fraction from the same sources.
Humerus Primer Ossification Zone Development In Rat Fetuses: A Histological And Histochemical Study, İsmai̇l Üstünel, Gökhan Akkoyunlu, Erdoğan Kocamaz, Ramazan Demi̇r
Humerus Primer Ossification Zone Development In Rat Fetuses: A Histological And Histochemical Study, İsmai̇l Üstünel, Gökhan Akkoyunlu, Erdoğan Kocamaz, Ramazan Demi̇r
Turkish Journal of Biology
In this investigation of the primary ossification zones of 14-18 day-old fetal rat humeri by histological, histochemical and histoenzymatical methods, 30 rat fetuses of the species Rattus norvegicus were used. The humeral diaphysis samples of the fetuses were subjected to alcian blue-heamatoxylin, periodic acid Schiff (PAS)-heamatoxylin, alcian blue-PAS-heamatoxylin, alizarin red and toluidine blue, alkaline phosphatase (ALP), adenosine triphosphatase (ATPase) and acid phophatase (ACP) staining techniques. The results can be summarized as follows: On day 14, no ossification signs were evident yet, whereas on day 15, the initiation of degenerations in some chondrocyte cytoplasms and the formation of osteoblastic cells on …
Immunohistochemical Distribution Of Transforming Growth Factor Alpha,Laminin, Fibronectin And Desmin In Rat Ovary, Gökhan Akkoyunlu, İsmai̇l Üstünel, Ramazan Demi̇r
Immunohistochemical Distribution Of Transforming Growth Factor Alpha,Laminin, Fibronectin And Desmin In Rat Ovary, Gökhan Akkoyunlu, İsmai̇l Üstünel, Ramazan Demi̇r
Turkish Journal of Biology
Since the pure synthesis of transforming growth facto alpha (TGF\alpha) many attempts have been made in order to determine its distribution in various tissues. As a result of the complexitiy of the cyclic periods throughout experimental models, it is not easy to determine the distribution of TGF\alpha in the system. Especially the pre-and through-gestational pattern of TGF\alpha in rat ovary has not been reported fully. Furthermore, the shortage of literature about intracellular desmin and laminin, fibronectin of different intermediate filaments whether they have any interaction with TGF\alpha through this period, makes the subject worth discussing. Immunocytochemical techniques were utilized in …
The Effect Of Soy Flour On Alcohol And Cell Concentration In Alcoholfermentation Of Molasses, Tuncay Ari, Sedat Dönmez
The Effect Of Soy Flour On Alcohol And Cell Concentration In Alcoholfermentation Of Molasses, Tuncay Ari, Sedat Dönmez
Turkish Journal of Biology
The effects of soy flour on alcohol fermentation of molasses by different yeast strains were investigated. Six strains of Saccharomyces cerevisiae and one Saccharomyces bayanus were used. It was found that soy flour affected fermentation time, alcohol concentration and total cell count in all strains. But the degree of this effect was different among strains. The maximum ethanol concentration were 63.9 g/l in Saccharomyces cerevisiae N3 strains. The maximum theoritical yield, however was 91.6% in Saccharomyces cerevisiae W4 strains. Compared with the control, the largest increment in ethanol concentration was in Saccharomyces bayanus 1A as 12.2%. Furthermore, addition of soy …
The Cytogenetic Effects Of Npyr On Mice, Mehmet Korkmaz, Ahmet Çolak
The Cytogenetic Effects Of Npyr On Mice, Mehmet Korkmaz, Ahmet Çolak
Turkish Journal of Biology
The effects of N-nitrosopyrrolidine (NPYR) on mice chromosomes and micronucleus induction were investigated in order to evaluate its genotoxic effects. Twenty 10-12 week old mice and 40 8- 10 week old male mice ( Mus musculus var. albinos) were used for chromosome analysis without sex discrimination and micronucleus tests respectively. Mice were intraperitoneally treated in single injections with three dose levels (100, 200 and 300 mg/kg) of NPYR with isotonic saline as the solvent vehicle. Bone marrow was sampled at 24 and 48 h postinjection. Examination of the mice bone marrow chromosomes at the metaphase (24 h) showed that in …
The Monthly Variations Of Blood Glucose Level Of Capoeta Tinca Capoeta(Heckel, 1843) In Çoruh Basin-Oltu Stream, Ayhan Yildirim, Mustafa Türkmen, İrfan Altuntaş
The Monthly Variations Of Blood Glucose Level Of Capoeta Tinca Capoeta(Heckel, 1843) In Çoruh Basin-Oltu Stream, Ayhan Yildirim, Mustafa Türkmen, İrfan Altuntaş
Turkish Journal of Biology
In this study, the monthly variation of blood glucose level of Capoeta tinca caught from in Çoruh Basin - Oltu Stream, between Augist 1995 and June 1996 was determined. It was determined that the average blood glucose level was 86.19±3.86 mg/dl in males and 83.58±3.77 mg/dl in females. The blood glucose level was highest (116.36±8.58 mg/dl) in April, and lowest (51.00±7.10 mg/dl) in June.
Investigation Of Selected Industrially Important Enzymatic Activities Of Turkish Agricultural Mycoflora-I: Amylase, Lipase, Protease, Şemi̇nur Topal, Ceyda Pembeci̇, Mehli̇ka Borcakli, Mehmet Batum, Özlem Çelti̇k
Investigation Of Selected Industrially Important Enzymatic Activities Of Turkish Agricultural Mycoflora-I: Amylase, Lipase, Protease, Şemi̇nur Topal, Ceyda Pembeci̇, Mehli̇ka Borcakli, Mehmet Batum, Özlem Çelti̇k
Turkish Journal of Biology
In this context, fungi being a rich source in from metabolites point of view, their utilization possibilities in various area are investigated. Primary metabolites of the fungi representing Turkish agricultural mycoflora which belongs to our culture collections are determined and their importance with respect to industry will be evaluated. It is assumed that enzymes such as, protease, amylase, lipase, cellulase, xylanase, b-glucanase, pectinase of these moulds represent a potential source for food industry. In this context, qualitative screening three of these enzymes producing abilities of relevant moulds are carried out. Methods used for enzyme determination cover, "Opacity Capacities in Deep …
The Population Structure And Growth Properties Of Chalcalburnusmossulensis (Heckel, 1843) Caught From Askale Region Of River Karasu, Mustafa Türkmen, İhsan Akyurt
The Population Structure And Growth Properties Of Chalcalburnusmossulensis (Heckel, 1843) Caught From Askale Region Of River Karasu, Mustafa Türkmen, İhsan Akyurt
Turkish Journal of Biology
In this study, the population structure and growth properties of Chalcalburnus mossulensis (Heckel, 1843) caught from Askale Region of River Karasu betwen February 1996 and January 1997 were examined. The age composition of population varied between I and VI ages, and the most abundant age group was the third age group (42.13%). The population was composed of 51.74% females and 48.26% males. The fork length and the body weights of males and females varied between 8.9-18.1 cm, 3.6-67.9 g and 8.5-18.5 cm, 5.1-79.5 g respectively. The specific and relative growth for length and weight were maximum in the second age. …
The Effect Of Olive Oil Mill Effluent On The Mitotic Cell Division And Total Protein Amount Of The Root Tips Of Triticum Aestivuml., Mehmet Aybeke, Göksel Olgun, Uğur Sidal, Dürdane Kolankaya
The Effect Of Olive Oil Mill Effluent On The Mitotic Cell Division And Total Protein Amount Of The Root Tips Of Triticum Aestivuml., Mehmet Aybeke, Göksel Olgun, Uğur Sidal, Dürdane Kolankaya
Turkish Journal of Biology
In this work sitotoxic and mutagenic effects Olive Oil Mill Effluent (OOME) on the root tips of Triticum aestivumL. were investigated. In this purpose, germination rate of seeds, mitotic division abnormalities and total protein amounts were evaluated. The seeds kept in various OOME concentrastions, it was determinated that germination rate decreased, whilst mitotic abnormalities and mitotic cell division frequency increased. Especially, the increased cell division frequency was of significance, almost several times higher than the control group. The cells having multinucleus or fragmented nucleus and numerical or sutructural mutations were also found. Furthermore it was observed that total protein amounts …
Antioxidant Enzymes Activities In Chemically Warfared Samples Ofdociostaurus Maroccanusobtained From An Epidemic Population, Aysun Özkan, Gülgün Gündüz, Battal Çiplak, Kayahan Fişkin
Antioxidant Enzymes Activities In Chemically Warfared Samples Ofdociostaurus Maroccanusobtained From An Epidemic Population, Aysun Özkan, Gülgün Gündüz, Battal Çiplak, Kayahan Fişkin
Turkish Journal of Biology
Antioxidant enzyme activities at first, second, third nymphal stage and adult individuals of nition [O-O-dimethyl-O-(3-methyl-4-nitro-phenyl) phosphorothioate] administered D. maroccanusare investigated. Living specimens where nition had been administered for chemical contention by Agricultural Head Office of Antalya Province in 1996 were taken from epidemic population of Eynif plain (Ibradi, Antalya). Catalase, GSH-reductase, GSH-peroxidase and Se-dependent-GSH-peroxidase activities are assayed spectorofotometrically. The catalase activity did indicate no significant change in any nymphal stage. GSH-reductase activity increased in adult individuals. Se-GSH-peroxidase activity decreased with second nymphal stage and increased with the third one, Whereas GSH-peroxidase activity increased at second nymphal stage of D. maroccanus.
Hydrophobicities And Electrostatic Behavior Ofdifferent Micro-Organisms, Abbas Yousefi Rad, Hakan Ayhan, Erhan Pi̇şki̇n, Özgül Kisa
Hydrophobicities And Electrostatic Behavior Ofdifferent Micro-Organisms, Abbas Yousefi Rad, Hakan Ayhan, Erhan Pi̇şki̇n, Özgül Kisa
Turkish Journal of Biology
The surface properties of 7 different micro-organisms with their 14 different strains were examined. The contact angles of the micro-organism films were measured by a captive-bubble technique. Surface free energies were calculated from the contact angles. Hydrophobicities were also evaluated by adhesion to p-xylene. The zeta potentials and surface charges of the micro-organisms were measured using a zeta potential analyser system. The contact angles of the gram positive micro-organisms, gram negative micro-organisms and Candida ablicans were in the ranges 48-70°, 43.5-55°, and 69-75° respectively, while the corresponding surface free energies were in the ranges 44.9-60.4 erg.cm -2 , 55.3-61.8 erg.cm …
Am1 Treatment Of Some Phenoxyacetic Acidherbicides, Lemi̇ Türker
Am1 Treatment Of Some Phenoxyacetic Acidherbicides, Lemi̇ Türker
Turkish Journal of Biology
AM1-type semiempirical quantum chemical calculations were carried out to explain differences in herbicidal activity between certain phenoxyacetic acid derivatives. It was found that the proper orientation and shape of the COOH group and the phenyl moiety both mutually and individually affected the observed activities.
A Study Of The Levels Of Vitamins A, E And C And Selenium In Rhubarb(Rheum Ribes L.), Ömer Munzuroğlu, Fi̇kret Karataş, Nazmi̇ Gür
A Study Of The Levels Of Vitamins A, E And C And Selenium In Rhubarb(Rheum Ribes L.), Ömer Munzuroğlu, Fi̇kret Karataş, Nazmi̇ Gür
Turkish Journal of Biology
The levels of vitamins A, E and C and selenium in young shoots of Rheum ribes L. collec-ted at various altitudes from Elazığ and Tunceli Basins were examined experimentally. The vitamin le-vels and the amount of selenium were determined by HPLC and fluorometers. It was determined that the levels of A, E and C vitamins and selenium in the young shoots of Rheum ribes L. were in the ranges of 0.255 ± 0.019 - 0.363 ± 0.015 µg.gr -1 , 0.614 ± 0.014 - 0.765 ± 0.021 µg.gr -1 , 197.6 ± 10.47 - 282.3 ± 17.46 µg .gr -1 …
Production Of Gibberellic Acid And Cytokinin By Phanerochaete Chrysosporiumme446 Immobilized On Polyurethane Foam, Serpi̇l Ünyayar
Production Of Gibberellic Acid And Cytokinin By Phanerochaete Chrysosporiumme446 Immobilized On Polyurethane Foam, Serpi̇l Ünyayar
Turkish Journal of Biology
The fungus Phanerochaete chrysosporium ME446 was entrapped on polyurethane foam to synthesize gibberellic acid (GA 3 equivalent) and Cytokinin (zeatin equivalent). Maximum gibberellic acid was defined on the 6 th day (44.43 µg/mL and 61.22 µg/mL, respectively) in both free and immobilized cells. Maximum cytokinin was defined on the 12 th day (9.61µg/mL and 16.33 µg/mL, respectively) in both free and immobilized cells. An immobilized system of gibberellic acid and cytokinin production resulted in comparatively higher yield than free fungal mycelium.
The Effect Of Cadmium Nitrate On Some Developmental Properties Ofdrosophila Melanogaster, Lütfi̇ye Gelegen, Eli̇f Yeşi̇lada
The Effect Of Cadmium Nitrate On Some Developmental Properties Ofdrosophila Melanogaster, Lütfi̇ye Gelegen, Eli̇f Yeşi̇lada
Turkish Journal of Biology
The effects of cadmium nitrate on the fecundity, larval survival and sex ratio of D. melanogaster were tested. According to our findings, the effects of cadmium nitrate can be summarized as follows: it appeared that when used as a feeding substance during the developmental period, cadmium nitrate did not have any effect on fecundity. On the other hand, if cadmium nitrate was given throughout adult life it caused a proportional decrease in the daily mean with increasing concentration. Furthermore, the larval survival ratio decreased due to the concentration of cadmium nitrate. Also cadmium nitrate application appeared to have no effect …
Study Of Adventitious Shoot Formation In Leaves Of Grape (Vitis Spp.), Ni̇lgün Göktürk Baydar
Study Of Adventitious Shoot Formation In Leaves Of Grape (Vitis Spp.), Ni̇lgün Göktürk Baydar
Turkish Journal of Biology
The effects of genotype, source of explant and nutrient medium on adventitious shoot formation were examined in the leaves of 5 grape cultivars (Atasarisi, Çavus, Kalecik Karasi, Sultani çekirdeksiz and Yapincak), 2 rootstocks (Kober 5BB ( V. berlandieri x V. riparia) and 41 B M.G. (Chasselas x V. berlandieri)) by organogenesis. In this study, petioles and laminae isolated from in vitro shoots were used as the sources of explant. The highest rates of adventitious shoot formation were obtained from petiole explants. Leaf explants were cultured on MS- and NN- based regeneration media containing different concentrations of BAP and NAA. It …
Characterization Of \Beta-Xylosidase And\Alpha-L-Arabinofuranosidase Activities Fromthermomonospora Fusca Bd25, Müni̇r Tuncer
Characterization Of \Beta-Xylosidase And\Alpha-L-Arabinofuranosidase Activities Fromthermomonospora Fusca Bd25, Müni̇r Tuncer
Turkish Journal of Biology
Thermomonospora fuscaBD25 produces relatively high levels of activity of \beta-xylosidase and \alpha-L-arabinofuranosidase. The aim of the work described in this study was to characterize some properties of \beta-xylosidase and \alpha-L-arabinofuranosidase produced by T. fusca BD25 when growing on oat spelt xylan as the main carbon and energy sources. The substrates p-NPX and p-NPA reacted with \beta-xylosidase and \alpha-L-arabinofuranosidase with specific activities of 4.01 U mg -1 protein and 0.35 U mg -1 protein, respectively. The \beta-xylosidase remained stable at up to 65 °C, but \alpha-L-arabinofuranosidase lost 10 % of its maximum activity at 55 °C. \beta-xylosidase and \alpha-L-arabinofuranosidase activities remained …
Protein Profiles And Prevalence Of Methicillinresistant Staphylococcus Aureus (Mrsa) In Gülhanemilitary Academy Hospital In Turkey, Sefa Can Saçilik, Özlem Osmanağaoğlu, Özgül Kisa, Ahmet Başustaoğlu, Cumhur Çökmüş
Protein Profiles And Prevalence Of Methicillinresistant Staphylococcus Aureus (Mrsa) In Gülhanemilitary Academy Hospital In Turkey, Sefa Can Saçilik, Özlem Osmanağaoğlu, Özgül Kisa, Ahmet Başustaoğlu, Cumhur Çökmüş
Turkish Journal of Biology
The present study was undertaken to determine the relationship between Methicillin-Resistant Staphylococcus aureus (MRSA) strains isolated from various clinical specimens in Gülhane Military Medical Academy, in Ankara, Turkey. In 1997, at this hospital, the percentage of S. aureus among all nosocomial isolates was 20% and the percentage of MRSA among these S. aureus isolates was 51%. Both sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and Native-Page (N-PAGE) were used for typing MRSA isolates which have common antibiotic susceptibility test results. MRSA isolates were also evaluated according to the whole-cell proteins (WCPs) and filtrate proteins (FPs). Using these methods, we concluded that …
Production Of Uricase Enzyme From Aspergillus Niger And Determination Of Some Factors Affecting The Activity, Fi̇gen Ertan, Erol Aksöz
Production Of Uricase Enzyme From Aspergillus Niger And Determination Of Some Factors Affecting The Activity, Fi̇gen Ertan, Erol Aksöz
Turkish Journal of Biology
This study was undertaken to obtain uricase enzyme from Aspergillus niger and also to determine the production conditions and the effects of some factors on enzyme activity. The results of the experiments, in consideration of the production of the uricase enzyme and the factors affecting the production, demonstrated that enzyme activity was maximum when the production time was 3 days at a temperature of 30ºC with the initial pH at 6.0 and inductor concentration at 0.1%. It was determined that ammonium compounds, which were added to the production medium, inhibited enzyme synthesis, and that MgS0_4 has an important role in …
A Quantitative And Qualitative Study On The Phytoplankton Of Palandöken Pond, Hasan Gürbüz, Zekeri̇ya Altuner
A Quantitative And Qualitative Study On The Phytoplankton Of Palandöken Pond, Hasan Gürbüz, Zekeri̇ya Altuner
Turkish Journal of Biology
In this research, the phytoplankton community of Palandöken pond was investigated quantitatively and qualitatively in samples taken vertically from the surface to 10 m depth between October 1990 and October 1992. The physical and chemical properties of the pond water were also determined. 99 taxa were determined in the phytoplankton and the proportions of them were as follows: Bacillariophyta 79%, Chlorophyta 10%, Cynophyta 6%, Euglenophyta 5%. The phytoplankton generally increased in the spring and early fall whereas in the summer and late fall it decreased. Physical factors had the greatest effect on phytoplankton growth.
A Quantitative And Qualitative Study On The Benthic Algal Floraof Palandöken Pond, Hasan Gürbüz
A Quantitative And Qualitative Study On The Benthic Algal Floraof Palandöken Pond, Hasan Gürbüz
Turkish Journal of Biology
In this study, the composition and density of the benthic algae and seasonal variations of the benthic algae of Palandöken Pond were determined between September 1990 and September 1992. Samples were collected from two previously selected sampling sites. It was found that Bacillariophyta was the dominant benthic algal group in this pond. During our investigation a total of 160 taxa were identified and 135 them were composed of epipelic algae. The percentages of algal groups were as follows: Bacillariophyta 57%, Cholorphyta 11% and Euglenophyta5%. It was found that there were plenty of epipelic algal species living together with epiphytic and …
Detection Of Mutagenic Effects Of 2, 4, 5 Tri (Sübstitüe) Phenyl Imidazole And Its Derivatives In Ames/Salmonella/Test System, Ayşe Mercangöz, Berri̇n Ayaz Tüylü
Detection Of Mutagenic Effects Of 2, 4, 5 Tri (Sübstitüe) Phenyl Imidazole And Its Derivatives In Ames/Salmonella/Test System, Ayşe Mercangöz, Berri̇n Ayaz Tüylü
Turkish Journal of Biology
The mutagenic effects of 2, 4, 5 tri-phenylimidazole and its nine different derivatives, which are aimed at producing medicine as a primary substance, were investigated by the Ames Salmonella/Microsome plate assay. The test compounds were directly effective, especially in the TA 98 strain. A relationship was found between the mutagenic effect and the positions of the methyl and methoxy groups.
The Inhibition Effect Of Yoghurt Starter Culture Metabolites, Belma Aslim, Yavuz Beyatli, Kadi̇r Halkman
The Inhibition Effect Of Yoghurt Starter Culture Metabolites, Belma Aslim, Yavuz Beyatli, Kadi̇r Halkman
Turkish Journal of Biology
In this study effect of some separate and combined metabolic compounds produced by lactic acid were tested on food pathogenic and contaminant microorgnasms. For this study, five strains of each Lactobacillus bulgaricus and Streptococcus thermophilus were used. The inhibition effects of the metabolic products (lactic acid, hydrogen peroxide, acetaldehyde, diacetyl) produced by the stains on test bacteria ( Staphylococcus aureus, Escherichia coli) were determined. Also, a random combinations of the strains were prepared and the metabolic compounds produced by these cultures and their antimicrobial activities on tested bacteria were determined. By regarding the metabolic products mainly, the samples of lactic …
The Effects Of Malt Extract And Corn Strach On The Vegetativedevelopment And Morphology Of The Pleurotus Floridafovose Mycelia, Abdunnasir Yildiz
The Effects Of Malt Extract And Corn Strach On The Vegetativedevelopment And Morphology Of The Pleurotus Floridafovose Mycelia, Abdunnasir Yildiz
Turkish Journal of Biology
No statistical differences were determined in the effects of malt extract (ME) and corn strach (CS) doses on the vegetative development of mycelia (P>0.05). The mycelia in all gropus covered 9.0 cm agar plates in 9.0 days and some characteristic differences, development from (vertical or horizontal), cluster formation, tickening and tissue formations, were observed. In the group containing 2% CS, the mycelia formed a sparse development horizontally on the surface and center of the agar plate, whereas clustering, thickening and tissue formation wereobserved in the form of a thick zone on the edges of the petri dishes. In 1.5% …
Changes In Liver Cytoplasmic Glutathione-S-Transferase And Microsomalnitrosodimethylamine Demethylase Activities In Chicks Obtainedfollowing Daminozide Treatment, Yavuz Si̇li̇ğ, V. Kenan Çeli̇k, Ati̇lla Atalay
Changes In Liver Cytoplasmic Glutathione-S-Transferase And Microsomalnitrosodimethylamine Demethylase Activities In Chicks Obtainedfollowing Daminozide Treatment, Yavuz Si̇li̇ğ, V. Kenan Çeli̇k, Ati̇lla Atalay
Turkish Journal of Biology
In this study, microsomal nitrosodimethylamine demethylase (NDMAd) and cytoplasmic glutathione-s-tarnsferase (GST) activities in the livers of chicks obtained from the LD 10 (3 mg/ml) and LD 30 (9 mg/ml) doses of daminozide (Succinic acid 2,2-Dimethylhydrazide) injected Ross-Pm-3 fertilized chicken eggs were investigated. Spectrophotometric determination of NDMAd activity was performed at 412 nm by the detection of yellow coloured compound formed as a product of the reaction of formaldehyde with Nash reagent. No significant increase was observed in NDMAd activity (P>0.05) of the group treated with LD 10 dose although NDMAd activity was found to be significantly increased (P
The Effect Of Some Nutrients Supplementation To Synthetic Compostwith Wheat Straw Before Mycel Inoculation, On Mycelium Growth, Yieldand Early Ripe Of Agaricus Bitorquis(Quél). Sacc, Hasan Hüseyi̇n Doğan, Celaleddi̇n Öztürk, Cengi̇z Akköz
The Effect Of Some Nutrients Supplementation To Synthetic Compostwith Wheat Straw Before Mycel Inoculation, On Mycelium Growth, Yieldand Early Ripe Of Agaricus Bitorquis(Quél). Sacc, Hasan Hüseyi̇n Doğan, Celaleddi̇n Öztürk, Cengi̇z Akköz
Turkish Journal of Biology
The effect of some nutrients added to synthetic compost with wheat straw, on mycelium growth, yield and early ripe of Agaricus bitorquis (Quél.) Sacc. were investigated. The compost was prepared by fermentation and chemical disinfection methods. Corn flour, wheat flour, hen grain, soybean meal and sunflower seed hulls were used as additional nutrients. The experiments were made at the temperatüre 20-22°C and 80-90% relative humidity in the yield rooms. The shortest mycelium growth period (average 14 days) were determined in containing 350 g/10 kg and 450 g/10 kg sunflower seed hulls. The maximum production were taken in the sacks of …