Microbiological changes throughout ripening of Keş cheese

Microbiological changes in Keş cheese, traditional Turkish raw cow’s milk cheese made without the addition of starter culture, were studied during 90 days of ripening. Physico-chemical parameters, pH, salt content and water activity (aw), as important parameters for microbial growth, were also determined. Lactic acid bacteria were predominant microbial group. The time of ripening significantly influenced the count of total aerobic mesophilic bacteria, psychrophilic bacteria, mould (P<0.05), Lactobacillus spp. and Lactococcus spp. (P<0.01) which increased during ripening. E. coli and coagulase-positive staphylococci were not detected. The counts of Enterococcus spp. (P<0.05), Staphylococcus-Micrococcus spp., Enterobactericeae and coliform bacteria decreased throughout ripening of Keş cheese, which was connected to the physico-chemical parameters. Water activity significantly decreased (P<0.05), while the salt content increased (P<0.01) during ripening of Keş cheese. The obtained results will contribute to the establishment of the microbiological quality standards for Keş cheese and give necessary information for formation of autochthonous starter culture, which will help to understand ripening process of sour dried cheeses and improve the traditional farmhouse cheese production

Mikrobiološke promjene tijekom zrenja Keş sira

Microbiological changes in Keş cheese, traditional Turkish raw cow’s milk cheese made without the addition of starter culture, were studied during 90 days of ripening. Physico-chemical parameters, pH, salt content and water activity (aw), as important parameters for microbial growth, were also determined. Lactic acid bacteria were predominant microbial group. The time of ripening significantly influenced the count of total aerobic mesophilic bacteria, psychrophilic bacteria, mould (P<0.05), Lactobacillus spp. and Lactococcus spp. (P<0.01) which increased during ripening. E. coli and coagulase-positive staphylococci were not detected. The counts of Enterococcus spp. (P<0.05), Staphylococcus-Micrococcus spp., Enterobactericeae and coliform bacteria decreased throughout ripening of Keş cheese, which was connected to the physico-chemical parameters. Water activity significantly decreased (P<0.05), while the salt content increased (P<0.01) during ripening of Keş cheese. The obtained results will contribute to the establishment of the microbiological quality standards for Keş cheese and give necessary information for formation of autochthonous starter culture, which will help to understand ripening process of sour dried cheeses and improve the traditional farmhouse cheese production.Mikrobiološke promjene u Keş siru, tradicionalnom turskom siru proizvedenom iz sirovog kravljeg mlijeka bez dodatka mljekarske mikrobne kulture, praćene su tijekom 90 dana zrenja. Također su određeni fizikalno-kemijski parametri odgovorni z

Detection of Pathogen Candida spp. Isolated from Butter

Yeasts may affect food safety and quality causing spoilage in foods. Also, yeasts can be used as starter culture in the production of traditional and industrial products. Candida species are important for hospital infections which have been able to infect to humans via food in recent years. The aim of this study was to evaluate the incidence of pathogen Candida spp. in butter. In this study, 100 butter samples were analyzed from public bazaars. Candida spp. was detected 10 % of butter samples. C. albicans, C. albicans and C. krusei, C. tropicalis, C. krusei were isolated 4%, 3%, 2%, 1% from Candida spp. positive butter samples, respectively. According to this data, presence of pathogen Candida spp. in butter samples can cause significant problems in public health. In order to ensure food safety, it is necessary to determine the rate of yeast and mold and the detection of pathogen yeasts in microbiological analyses

Evaluation of the Potential Use of Levan Polysaccharide in Paper Conservation

Conservation of paper-based materials, namely, manuscripts, includes repair of tears, gap filling, consolidation, and fixation, which requires the use of adhesives. The adhesive in use for these purposes should be compatible with the chemical and physical properties of paper and should present good aging characteristics. In this study, we conducted a set of experiments with paper samples on which fructan-based biopolymer Halomonas levan (Hlevan) was applied for the first time and compared with glucan-based adhesive starch. Adhesive-applied samples were initially prepared by the application of different historical recipes of sizing and ink. Then, they underwent accelerated thermal aging. Chemical and physical changes of paper samples (crystallinity, pH, and color) were analyzed. Finally, Principal Component Analysis was performed to identify dominating factors affecting sample behavior with applied adhesives. This study demonstrates the aging characteristics of Hlevan on cellulose-based materials. The results showed that there is a color shift from blue to yellow for all samples after aging, but it is more pronounced for some samples with Hlevan. In addition, Hlevan is slightly less acidic than starch in all cases and acted as a plasticizer for a specific kind of sizing material. The methodology of this research is also efficacious in terms of understanding the interaction of paper media with the adhesives and their effects on aging

IMPORTANCE OF HYPERBILURUBINEMIA IN DIFFERENTIATION OF PRIMARY AND SECONDARY HEMOPHAGOCYTIC LYMPHOHISTIOCYTOSIS IN PEDIATRIC CASES

Background and objective: Hemophagocytic lymphohistiocytosis (HLH) is a life threatening hyper inflammatory disease. It is difficult to differentiate between primary and secondary HLH based on clinical findings at the onset of disease. We aimed to find parameters that can help to differentiate primary and secondary HLH at initial diagnosis especially for physicians working in developing countries. Patient and Method: We retrospectively analyzed data of 38 HLH patients who were admitted to the Pediatric Hematology Department of Gaziantep University between January 2009 and December 2013. Results: Of 38 patients, 20 were defined as primary and 18 were secondary HLH. The average age of primary and secondary HLH patients was 31±9 and 81±14 months, respectively (p=0.03). We found consanguinity rates significantly higher in primary HLH patients compared to secondary HLH patients (p=0.03). We found that total and direct bilirubin levels significantly increased in primary HLH patients compared to secondary HLH patients (p=0.006, p=0.044). Also, CRP levels were found markedly increased in secondary HLH patients compared to primary ones (p=0.017). Conclusion: We showed that cholestasis and hyperbilurubinemia findings of HLH patients at the initial diagnosis should be considered in favor of primary HLH and increased level of CRP should be considered in favor of secondary HLH

Resveratrol improves high-fructose-induced vascular dysfunction in rats

High levels of fructose in the diet results in metabolic abnormalities and vascular disorders. In this study, the effect of resveratrol (RES) on vascular relaxation and contraction responses was examined in the aorta of high-fructose (HFr)-fed rats. mRNA expressions of aortic sirtuin 1 (SIRT1), GLUT5, and aldolase B were also investigated. Rats were given fructose (30%) and (or) RES (50 mg.L-1) in their drinking water for 8 weeks. In the HFr-fed rats, plasma levels of arginine and the ratio of arginine: asymmetric dimethylarginine (ADMA) decreased, whereas leptin levels increased. Decreased relaxation and increased contractile responses were detected in aortic rings. However, the aortic expressions of SIRT1, GLUT5, and aldolase B remained unchanged. RES treatment restored HFr-induced vascular dysfunction without improvements in insulin resistance. Treatment of HFr-fed rats with RES increased plasma levels of arginine and the L-arginine: ADMA ratio, and decreased plasma levels of leptin. RES increased SIRT1 expression, but decreased the expression of GLUT5 and aldolase B in aortas from HFr-fed rats. These results suggest that RES contributes to the restoration of HFr-induced vascular dysfunction in rats, at least in part, by up-regulation of SIRT 1 and down-regulation of GLUT5 and aldolase B in the aorta. Moreover, RES may have a positive influence on vasculature by partly restoring the plasma arginine: ADMA ratio and leptin levels

The Effect of Cysteamine and Oviductal Cells in Different Culture Media on the Development of Sheep Embryos

Sheep is a very important source of wool, meat and milk all over the world. Oxidative stress during in vitro culture leads to defects in development of gametes and embryos. Several antioxidants such as cysteamine, L-ascorbic acid, beta mercaptoethanol, cysteine, glutathione, proteins, vitamins are used to supplement culture media to counter the oxidative stress. This study was aimed to detect the effect of cysteamine supplementation to the maturation medium and oviductal cell supplementation to culture medium on the subsequent development rates of sheep embryos with the control group. Oocytes were obtained from slaughtered sheep ovaries. Selected oocytes were incubated with or without 100 mu M cysteamine in TCM-199 medium under 38.5-38.8 degrees C 5% CO2 for 23 h. During IVF fresh semen was collected from ram by electroejaculation, they were washed in H-SOF medium and were fertilized in B-SOF medium with oocytes incubated for 18 hours under 38.5-38.8 degrees C 5% CO2, 5% O-2 and 90% N-2. The oocytes were obtained from maturation medium with/without cysteamine (C+,-) and were cultured in SOF or CR1aa media with/without oviductal cells (Ov+,-) and were grouped as; Group Ia: SOF+(C+ Ov-), Group Ib: SOF+(C+ Ov+), Group Ic: SOF+(C-Ov-) Group Id: SOF+(C-Ov+); Group IIa: CR1aa+(C+ Ov-), Group IIb: CR1aa+(C+ Ov+), Group IIc: CR1aa+(C-Ov-), Group IId: CR1aa+(C-Ov+). Embryos were incubated under 38.5-38.8 degrees C 5% CO2, 5% O-2, 90% N-2 in culture medium for 7 days. Embryo developments were observed and recorded daily. GLM procedure found in SPSS packet program was used for statistical analysis in this study. In conclusion, the addition of cysteamine or oviductal cells in vitro culture media found to have any effect in terms of the capacity of reaching to blastocyst stage in SOF or CR1aa media and no statistical difference is detected between groups

The Characteristics Of Pediatric Behcet'S Disease In Turkey Versus Israel

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