Browsing by Author "Alemdar, Suleyman"

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Fluoride Levels of Drinking Water in Bitlis Province (Turkey)
(Kafkas Univ, veteriner Fakultesi dergisi, 2011) Kahraman, Tahir; Alemdar, Suleyman; Alisarli, Mustafa; Agaoglu, Sema
In the present study, fluoride levels of drinking water from the province of Bitlis and its towns (Adilcevaz, Ahlat, Guroymak, Hizan and Tatvan) were investigated. A total of 164 water samples, collected from tanks or tap in autumn (November 2006) and spring (May 2007) were used as material. The fluoride levels were measured by Orion model 720A potentiometer, using an ion-selective electrode. The fluoride values in drinking water samples obtained from tanks and tap were found to be 0.36 +/- 0.05 and 0.35 +/- 0.03 ppm respectively. These values were the highest in Ahlat (0.75 +/- 0.04 ppm), and the lowest in the center of Bitlis (0.01 +/- 0.01 ppm). Fluoride levels were determined below 0.50 ppm in the 62% of water samples, and below 1.50 ppm in all water samples. The effect of season on the fluoride levels were found to be statistically insignificant (P > 0.05), while the effect of residential areas were significant (P < 0.05). As a result, it was demonstrated that the fluoride levels investigated in all water samples were within standard ranges, which poses no risk for fluoride toxication in the province of Bitlis.
Investigation of in Vitro Antimicrobial Activity of Aloe Vera Juice
(Medwell online, 2009) Alemdar, Suleyman; Agaoglu, Sema
This study was conducted to determine the antimicrobial activity of the Aloe vera juice against Gram-positive bacteria (Mycobacterium smegmatis, Staphylococcus aureus, Enterococcus faecalis, Micrococcus luteus and Bacillus sphericus), Gram-negative bacteria (Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli and Salmonella typhimurium) and Candida albicans as in vitro. The disc diffusion method was used to test the antimicrobial activity. The study showed that Aloe vera juice has antimicrobial activity against M. smegmatis, K. pneumoniae, E. faecalis, M. luteus, C albicans and B. sphericus, but has no inhibitory effect against the other bacterial strains. The least inhibitory effect was found against M. luteus, while C albicans was detected to be the most sensitive strain. As a result; the antibacterial activity of the tested plant juice was found effective mainly against the Gram-positive bacteria. This is important to use of Aloe vera for medication, cosmetic and food purposes.
Nitrate and Nitrite Levels of Drinking Water in Bitlis Province, Turkey
(Medwell online, 2009) Alemdar, Suleyman; Kahraman, Tahir; Agaoglu, Sema; Alisarli, Mustafa
In this study, nitrate and nitrite levels of drinking water in city of Bitlis were investigated. A total of 164 water samples, collected from the tank and tap water in Spring and Autumn were used as material. Analysis performed through spectrometric techniques showed that all samples contained some levels of nitrate and nitrite. The average nitrate and nitrite levels were 5.68+/-0.31 and 1.32+/-0.09 mg L-1, respectively. The effects of residential areas and season on the nitrate and nitrite levels were found to be statistically significant (p<0.05). Nitrate levels of tank and tap water were in accordance with recommended standards. However, 12 and 100% of tank water samples and 7.02 and 100% of tap water samples collected respectively in Spring and Autumn did not meet the national standards for nitrite levels. In addition, 3.58% of tap water collected in Autumn did not meet the international standards.