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Articles 1 - 30 of 90
Full-Text Articles in Life Sciences
Susceptibility Of Chickpea ( Cicer Arietinuml.)Cultivars To Agrobacterium Tumefaciens(Smith Andtownsend) Conn, Azi̇z Karakaya, Sebahatti̇n Özcan
Susceptibility Of Chickpea ( Cicer Arietinuml.)Cultivars To Agrobacterium Tumefaciens(Smith Andtownsend) Conn, Azi̇z Karakaya, Sebahatti̇n Özcan
Turkish Journal of Biology
Twelve chickpea cultivars grown in Turkey were assessed for susceptibility to wild-type Agrobacterium tumefaciens strains A281 and A136NC. Although all chickpea cultivars showed susceptibility to infection from both A. tumefaciens strains, Diyar-95, Flip 87-8, Ispanyol, Gökçe, Damla-89, and Aziziye-94 had higher frequencies of tumor formation from both strains than the other cultivars tested.
Phage Sensitivities Of Lactococci Isolated From Raw Milk And Whey, Pinar Şanlibaba, Mustafa Akçeli̇k
Phage Sensitivities Of Lactococci Isolated From Raw Milk And Whey, Pinar Şanlibaba, Mustafa Akçeli̇k
Turkish Journal of Biology
In this study, lactococcal strains isolated from raw milk and whey samples of different types of cheese produced without using industrial starter cultures in different regions of Turkey were tested for sensitivity to 22 lactic phages. In addition to the strain isolation materials, virulent lactic phages were also isolated from samples obtained from dairy plants using industrial starter cultures. 18 L lactis subsp. lactis strains out of 73 lactococcal strains were found to be resistant to all the phages. It was determined that the total phage resistance levels of the other 55 strains were between 18.18 and 90.90%.
Effects Of Various Physiological Stresses Ontranscription Of The Suc2gene In The Yeastsaccharomyces Cerevisiae, Sezai̇ Türkel
Effects Of Various Physiological Stresses Ontranscription Of The Suc2gene In The Yeastsaccharomyces Cerevisiae, Sezai̇ Türkel
Turkish Journal of Biology
Physiological conditions in the growth habitat of yeast cells dramatically changes the gene expression pattern. In this study, it was shown that transcription of the SUC2gene, which encodes the cytoplasmic and secreted enzyme invertase, is modulated according to the environmental conditions in the yeast Saccharomyces cerevisiae. Hyperosmotic stress and oxidative stress repressed the transcription of the SUC2gene up to 50%. However, preconditioning of the yeast cells prevented the negative effects of osmotic stress on SUC2gene transcription. These results clearly show that, apart from the control of invertase activity and its secretion, osmotic stress and oxidative stress also represses transcription of …
The Effect Of Calcium Concentration Of Water Onchloride Cell Density In Gill Of Brown Trout(Salmo Trutta L.) Larvae, Meti̇n Çalta
The Effect Of Calcium Concentration Of Water Onchloride Cell Density In Gill Of Brown Trout(Salmo Trutta L.) Larvae, Meti̇n Çalta
Turkish Journal of Biology
The effects of the calcium concentration on chloride cell (mitochondria-rich cell) density in the gills of brown trout ( Salmo trutta L.) larvae were studied. For this purpose, animals were divided into 3 groups 2 weeks after hatching and each groups was exposed to different calcium concentrations of water for two weeks. The results showed that the number of chloride cells in gill arch epithelia of larval fish increased with decreased calcium concentration.This increase was statistically significant in the gills of larvae kept in zero-Ca 2+ freshwater (ZCWF) ( P< 0.001 ) and of those kept in low-Ca 2+ freshwater (LCFW) ( P< 0.05) in comparision with the gills of larvae kept in normal freshwater (NFW).
The Effect Of Cadmium Nitrate On The Longevity Of Drosophilamelanogaster, Eli̇f Yeşi̇lada, Lütfi̇ye Gelegen
The Effect Of Cadmium Nitrate On The Longevity Of Drosophilamelanogaster, Eli̇f Yeşi̇lada, Lütfi̇ye Gelegen
Turkish Journal of Biology
The effect of cadmium nitrate on the longevity of Drosophila melanogaster was tested. When cadmium nitrate was given throughout the adult life it caused a decrease in the mean life-span of flies in all treated groups. Furthermore, the effect of cadmium nitrate on young populations was also compared with aged populations. The young populations survived longer than aged populations with the food medium containing cadmium nitrate.
The Isolation And Characterization Of Glucoamylase Enzyme Of Anaspergillus Niger Natural Isolate, Gökhan Coral, Ömer Çolak
The Isolation And Characterization Of Glucoamylase Enzyme Of Anaspergillus Niger Natural Isolate, Gökhan Coral, Ömer Çolak
Turkish Journal of Biology
An extracellular glucoamylase enzyme was isolated from Aspergillus niger Z10 natural isolate in a liquid Czapek Dox medium which contained soluble starch (2%) as the sole carbon source. The molecular weight of the enzyme was found to be about 100.000 Daltons through Starch-SDS Polyacrylamide Gel Electrophoresis. The optimal pH range of the enzyme was found to be 4.5-5.5 and it was determined that the thermal stability of this enzyme is quite high.
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 …
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 …
Isolation, Identification And Toxigenic Tests Of Aeromonas Hydrophila From Several Sources In Izmir, Ataç Uzel, Füsun Uçar
Isolation, Identification And Toxigenic Tests Of Aeromonas Hydrophila From Several Sources In Izmir, Ataç Uzel, Füsun Uçar
Turkish Journal of Biology
A total of 43 samples (4 sea water, 5 water, 4 river water, 10 oyster and 10 fish samples) from Izmir were examined for the presence of Aeromonas hydrophila. Alkaline peptone Water (APW) for the environmental samples and Trypticase Soy Broth with Ampicillin and Toluidine Blue (TSBA) for the food samples were used for enrichment of the samples. In isolation, 5 different selective media were used: DNase Agar with Toluidine blue and Ampicillin (DNTA), Aeromonas Agar (AA), Rimler Shotts Agar (RSA), mA Agar and Aeromonas Mediums Base (AMB). Identification of the isolates was performed according to Bergey's Manual of Determinative …
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 …
Blood Serum Proteins Of The Genus Mesocricetusnehring, 1898 (Mammalia: Rodentia) In Turkey, Reyhan Çolak, Nuri̇ Yi̇ği̇t, Ercüment Çolak, Mustafa Sözen, Şaki̇r Özkurt
Blood Serum Proteins Of The Genus Mesocricetusnehring, 1898 (Mammalia: Rodentia) In Turkey, Reyhan Çolak, Nuri̇ Yi̇ği̇t, Ercüment Çolak, Mustafa Sözen, Şaki̇r Özkurt
Turkish Journal of Biology
In this study, 18 live specimens collected from six localities in the distribution areas of Mesocricetus brandti and Mesocricetus auratus were examined using SDS-PAGE (sodium dodecyl sulphate-polyacrylamide gel electrophoresis). The findings showed that there is no difference in globulin and albumin proteins of M. brandti and M. auratus, and supported the claim that M. auratus is very closely related to M. brandti.
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.
Hepatitis C Virus: Genome Organization, Viralproteins And Implications In Disease Pathogenesis, Çağla Eroğlu, Ergün Pinarbaşi
Hepatitis C Virus: Genome Organization, Viralproteins And Implications In Disease Pathogenesis, Çağla Eroğlu, Ergün Pinarbaşi
Turkish Journal of Biology
The hepatitis C virus (HCV) infection is a significant cause of morbidity and mortality worldwide. Infection with HCV becomes chronic in more than 80% of cases and it accounts for 20% of all cases of acute hepatitis. The hepatitis C virus was first identified by the molecular cloning of the virus genome in 1989. It is an enveloped, positive strand RNA virus with a genome size of around 9.5 kilobases. The single-stranded RNA genome of the virus contains a large open reading frame that encodes a large polyprotein of 3,010 to 3,033 amino acids shown to be processed by a …
The Effect Of Kinetin, Gibberellic Acid And Indoleacetic Acid On Ems-Induced Somatic Mutation Andrecombination In Drosophila Melanogaster, Eli̇f Yeşi̇lada
The Effect Of Kinetin, Gibberellic Acid And Indoleacetic Acid On Ems-Induced Somatic Mutation Andrecombination In Drosophila Melanogaster, Eli̇f Yeşi̇lada
Turkish Journal of Biology
The effect of plant growth hormones (kinetin, gibberellic acid (GA 3) and indole acetic acid (IAA)) on EMS-induced mutant wing spots was studied with the somatic mutation and recombination test (SMART) in Drosophila melanogaster.GA 3 reduced all kinds of EMS-induced spot. While a 10 -3 M concentration of kinetin reduced only the number of EMS-induced twin spots, a 10 -4 M concentration was seen to increase the number of all types of spot. The same concentrations of IAA gave variable results. A 10 -4 M concentration of IAA caused a decrease only in the number of large single spots. Our …
In Situ Germination Of Pollen Tetrads In Periplocagraceae L. (Periplocaceae), Feruzan Dane
In Situ Germination Of Pollen Tetrads In Periplocagraceae L. (Periplocaceae), Feruzan Dane
Turkish Journal of Biology
The mature anthers in large flower buds of Periploca graceae L. ( Periplocaceae ) were examined cytologically. It was seen that pollen was retained in permanent tetrads. Pollen tetrads were usually observed as isobilateral, rarely as linear. It was also observed that pollen tetrads germinated within the anther loculi. Most of the pollen tetrads were well stained and the germination rate was 90 %. In in situ germinated pollen tetrads, 1-4 pollen tubes were observed. During germination of pollen tetrads, the behavior of the nuclei was normal. At the early stage of pollen tube formation, a vegetative nucleus and two …
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 …
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 …
Germin, An Oxalate Oxidase, Has A Function In Manyaspects Of Plant Life, Mahmut Çalişkan
Germin, An Oxalate Oxidase, Has A Function In Manyaspects Of Plant Life, Mahmut Çalişkan
Turkish Journal of Biology
Germin, a molecular marker of wheat embryo germination, is a remarkably protease-resistant, apoplastic, homopentameric glycoprotein. Different forms of germin found to be related to various aspects of plant development have been discovered. Germins were determined in cereals, dicotyledonous angiosperms, gymnosperms and in a prosit, all these proteins are together called germin-like proteins due to their DNA sequence homology. Cereal germins have oxalate oxidase activity, an activity which generates hydrogen peroxide by degrading oxalic acid. Both of these molecules have been implied in the regulation of cell development, differentiation, signalling and defence systems of plants. The germin-like proteins found in dicotyledonous …
Bacteriocin Typing Of Some Turkish Isolates Ofpseudomonas Syringae Pv. Phaseolicola, Kiymet Güven
Bacteriocin Typing Of Some Turkish Isolates Ofpseudomonas Syringae Pv. Phaseolicola, Kiymet Güven
Turkish Journal of Biology
Eighty-six Pseudomonas syringae pv. phaseolicola isolates collected from different bean growing areas in Eskişehir were typed for the production of bacteriocin.All the isolates tested produced bacteriocin and 24 bacteriosin groups were determined. No correlation was found between the bacteriocin groups and geographical origin. Authentic isolates of the bacterium representing 3 different races were also tested for bacteriocin production and bacteriocin types did not correlate with the races.
The Effect Of Sulphur Dioxide On Macrophage Phagocytic Activity In Diabetic Rats, Veci̇he Ni̇met İzgüt Uysal, Vural Küçükatay, Aysel Ağar, Pi̇raye Yargiçoğlu
The Effect Of Sulphur Dioxide On Macrophage Phagocytic Activity In Diabetic Rats, Veci̇he Ni̇met İzgüt Uysal, Vural Küçükatay, Aysel Ağar, Pi̇raye Yargiçoğlu
Turkish Journal of Biology
Sulphur dioxide as a criterion of air pollution supresses macrophage functions. Some immunological changes in diabetes mellitus have been detected. In the present study, we examined the effect of sulphur dioxide on macrophage phagocytic activity in diabetic rats. The animals were separated into four groups as: 1) Control, 2) Sulphur dioxide, 3) Diabetes mellitus, 4) Diabetes mellitus+sulphur dioxide. The first and the third groups of animals were respirated with filtered atmosphere air in a special chamber one hour daily for eight weeks, while the other groups were exposed to 10 ppm sulphur dioxide in the same conditions and periods. The …
Effects Of Endosulfan On The Isolated Sciatic Nerve Of The Frog, Ülkü Çömelekoğlu, Belgi̇n Büyükakilli, Aynur Avci Özge
Effects Of Endosulfan On The Isolated Sciatic Nerve Of The Frog, Ülkü Çömelekoğlu, Belgi̇n Büyükakilli, Aynur Avci Özge
Turkish Journal of Biology
The purpose of this study was to investigate the effect of endosulfan on the isolated sciatic nerve of the frog. The nerve was exposed to 0.5 ppm endosulfan for 60 min and then compound action potentials were recorded extracellulary. The latencies, amplitudes, durations of depolarization and repolarization and threshold voltage were measured (n=30). Conduction velocities were calculated using the nerve lengths and latency values of each nerve. It was observed that values of amplitude and duration of repolarization were significantly higher (p
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 …
Isolation, Characterization And Identification Ofthiram-Degrading Microorganisms From Soilenrichment Cultures, Nuretti̇n Şahi̇n, Abdurrahman Üsame Tamer
Isolation, Characterization And Identification Ofthiram-Degrading Microorganisms From Soilenrichment Cultures, Nuretti̇n Şahi̇n, Abdurrahman Üsame Tamer
Turkish Journal of Biology
Mixed microbial cultures were obtained by enrichment from soil samples collected from the Gediz basin. A number of species of bacteria and fungi were isolated and partially characterized from enrichment clutures containing the fungicide thiram. According to their responses in morphological and biochemical tests fungi were identified as Aspergillus niger, A. flavus and Penicilium steckii. Bacterial isolates were assigned to the genera: Bacillus, Arthrobacter, Moraxella-like Acinetobacter and Streptomyces. Islates grew in a mineral salts medium containing 0.2 mg/ml thiram and no growth factors were required.
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 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.
The Use Of Random Amplified Polymorphic Dna(Rapd) Markers In Sex Discrimination In Niletilapia, Oreochromis Niloticus (Pisces: Cichlidae), Fevzi̇ Bardakci
The Use Of Random Amplified Polymorphic Dna(Rapd) Markers In Sex Discrimination In Niletilapia, Oreochromis Niloticus (Pisces: Cichlidae), Fevzi̇ Bardakci
Turkish Journal of Biology
Random amplified polymorphic DNA (RAPD) markers were successfully used in discrimination of sexes in Nile tilapia fish ( Oreochromis niloticus) using linear discriminant function analysis. The results provide support for the view that major genetical sex determining factors exist in tilapia.
Investigation On The Liver Functions Agriculturel Workers Chronically Exposed To Pesticides, Ülkü Çömelekoğlu, Bi̇rgül Mazmanci, Abdullah Arpaci
Investigation On The Liver Functions Agriculturel Workers Chronically Exposed To Pesticides, Ülkü Çömelekoğlu, Bi̇rgül Mazmanci, Abdullah Arpaci
Turkish Journal of Biology
Blood samples were taken from agricultural workers who had been exposed to pesticides for long periods in Içel and the surrounding agricultural areas (n=150) and levels of AST, ALT, ALP, LDH, total protein, albumin and globulin in serum were determined. The same parameters were measured in 64 persons who are not exposed to pesticides in any way. Study group showed significantly higher levels of AST, ALT, ALP and LDH (p
Studies On Genetic And Breeding In Sesame ( Sesamum Indicum L.)I. Inheritance Of The Characters Determining The Plant Type, Hasan Baydar, İsmai̇l Turgut
Studies On Genetic And Breeding In Sesame ( Sesamum Indicum L.)I. Inheritance Of The Characters Determining The Plant Type, Hasan Baydar, İsmai̇l Turgut
Turkish Journal of Biology
The inheritance of the morphogenetical characters determining the plant types, maternal and cytoplasmic effects on oleic and linoleic acids in sesame was determined. The results obtained from the F 1 generation indicated that 1) bicarpellate capsule was dominant over quadricarpellate, 2) single capsule per leaf axil was dominant over three-capsule 3) branched stem type was dominant over non-branched stem type, 4) lobed leaf shape was dominant over simple or ovate leaf shape, 5) hairiness was dominant over hairless, 6) colored seed coat color was dominant over white seed coat color. The results obtained from the F 2 generation indicated that …
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). …
Production Of Auxin And Abscisic Acid Byphanerochaete Chrysosporiumme446 Immobilizedon Polyurethane Foam, Serpi̇l Ünyayar, Eli̇f Ünal, Ali̇ Ünyayar
Production Of Auxin And Abscisic Acid Byphanerochaete Chrysosporiumme446 Immobilizedon Polyurethane Foam, Serpi̇l Ünyayar, Eli̇f Ünal, Ali̇ Ünyayar
Turkish Journal of Biology
The fungus Phanerochaete chrysosporiumME446 was entrapped on polyurethane foam to synthesize auxin and abscisic acid (ABA). The maximum amounts of auxin produced on the 18 th day in both free and immobilized cells were 55.91mg/mL and 76.07mg/mL, respectively. Maximum ABA concentrations on the 12 th day in both free and immobilized cells were 6.87 mg/mL and 10.69 mg/mL, respectively. An immobilized system of auxin and ABA production resulted in a comparatively higher yield than free fungal mycelium.