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Articles by Mehmet Ozdemir
Total Records ( 4 ) for Mehmet Ozdemir
  Belgin Siriken , Ozgur Cadirci , Gokhan Inat , Cigdem Yenisey , Mukadder Serter and Mehmet Ozdemir
  In this study, a total of 100 Turkish sucuk samples were analyzed for pysico-chemical and microbiological quality. The maximum levels of moisture, fat and pH limited by Turkish food regulation are 40, 40% Fresh Matter (FM) and 5.8, respectively and sucuk should not contain any starch. In these respects, while 51.5 and 32% of the samples was found high for moisture and pH values, respectively, all the samples were almost suitable for fat value. Starch was detected in 66% of the samples. Lactobacilli and micrococci/staphylococci were <102-108 and <102-107 cfu g-1, respectively. There were negative correlations between Lactobacilli levels and pH values (p<0.01). However, at a few sucuk samples, there were no correlation between Lactobacilli and pH values. NaCl was detected in above 5% Dry Matter (DM) of 25 the samples. Maximum and minimum collagen and hydroxyproline levels were detected in 3.20-9.68 and 0.40-1.21 μg mg-1 (DM), respectively. According to analyzed results, the percentage of moisture, fat, pH, NaCl, starch, collagen and hydroxyproline levels showed variation among the sample analyzed. There is not any official regulation for collagen and hydroxyproline levels of Turkish sucuk. Therefore, this and these kinds of studies may serve as a basis for the preparation of Official Standards of quality for collagen and hydroxyproline content of sucuk in Turkey.
  Ulvi Reha Fidanci , Hidayet Yavuz , Cavit Kum , Funda Kiral , Mehmet Ozdemir , Selim Sekkin and Ayhan Filazi
  It was aimed to evaluate the effects of accumulated ammonia (NH3) concentration in poultry housing and Nitrite (NO2-) Nitrate (NO3-) concentrations in poultry litter on thyroid hormone levels (Triiodothyronine (T3) and Thyroxine (T4)), Body Weight (BW) and variables parameters such as blood methemoglobin, serum retinol, β-carotene and total cholesterol levels. Weighing 58.0±3.2 g (control group) and 60.0±4.3 g (experiment group), 1 day old, 180 male broiler chickens were used. Chicks were allowed ad libitum access to feed and water throughout the 45 days trials. In the experiment group, the ventilation was restricted without changing other conditions. NH3 concentration in poultry housing and moisture ratio, as well as NO2--NO3- concentrations in litter were measured with 5 days intervals throughout the 45 days trials. Plasma total T3, T4, blood methemoglobin and serum retinol, β-carotene and total cholesterol levels were evaluated at the 45 days. NH3 concentration in poultry housing was increased after 21 days (p<0.05) at 0.222 g bird-1 day and 26 days (p<0.01) at range 0.377-0.400 g bird-1 day in the experiment group as compared with the control group throughout the 45 days trials. In addition, moisture ratio in litter were increased after 26 days (p<0.05) at 0.444% bird-1 day and 36 days (p<0.01) at range 0.461-0.472% bird-1 day. Also, NO2- concentrations in litter were increased after 26 days (p<0.05) at range 7.50-8-40 ppm bird-1 day. As to NO3- concentrations in litter in the experiment group, no statistically significant difference was observed. Compared to control group, at 45 days, BW, plasma total T3, as well as serum retinol and β-carotene levels decreased significantly in experiment group (p<0.01). Total cholesterol level was increased (p<0.05). No statistically considerable differences were found in plasma total T4 and blood methemoglobin levels.
  Erdal Tasgin , Sefa Lok , Nagehan Demir and Mehmet Ozdemir
  The purpose of the research was to determine indicators of testosterone implication on heart, liver and kidney failure in female rats during puberty and also to determine its effect on some other chemical values. In the research, female 16 Sprague dawley rats (50 days) were used. The rats were divided into two equal groups. The first group was administrated testosterone, diluted with olive oil, 5 mg kg-1 (SID) subcutaneously for 10 weeks, 5 days each week. The second group was only given olive oil. Serum creatine kinase, creatine kinase-MB, alkaline phosphates, alanine aminotransferase, aspartate aminotransferase, blood urea nitrogen, creatinine, triglyceride, cholesterol, high density lipoprotein, amylase, total protein, albumin and calcium were measured with an auto-analyzer. It was determined that while testosterone application in female rats leads to decrease on the total serum protein and albumin levels (p<0.05), it increased aspartate aminotransferase and cholesterol levels (p<0.05). Consequently, it can be stated that long term testosterone implication during puberty may lead to organ defects at early ages.
  Sefa Lok , Erdal Tasgin , Nagehan Demir and Mehmet Ozdemir
  The purpose of the research is to define the effects of testosterone on heart, liver, kidney and some chemical values in male rats during puberty. In the research 16 Sprague dawley rats, 50 days old were used. The rats were divided into two equal groups. The first group was administrated testosterone, diluted with olive oil, 5 mg kg-1 (SID) subcutaneously for 10 weeks 5 days each week. The second group was only given olive oil. At the end of the 10th week blood samples were taken. Serum creatine kinase, creatine kinase-MB, alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, blood urea nitrogen, creatinine, triglyceride, cholesterol, high density lipoprotein, amylase, total protein, albumin and calcium were measured with an auto-analyzer. It was determined that while testosterone application in male rats led to increase on the serum CK-MB, CK and AST levels (p<0.05), it caused decreases on the total protein, albumin, calcium and creatinine (p<0.05). As a result, it can be stated that long term testosterone implication during puberty may lead to heart and liver defects at early ages.
 
 
 
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