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contamination of faecal coliforms in ice cubes sampled from…:粪大肠菌群污染冰块采样….pdf

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contamination of faecal coliforms in ice cubes sampled from…:粪大肠菌群污染冰块采样….pdf

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contamination of faecal coliforms in ice cubes sampled from…:粪大肠菌群污染冰块采样….pdf

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文档介绍:71 Tropical Biomedicine 29(1): 71–76 (2012) Contamination of faecal coliforms in ice cubes sampled from food outlets in Kubang Kerian, Kelantan Noor Izani, ., Zulaikha, ., Mohamad Noor, ., Amri, . and Mahat, . * School of Health Sciences, Universiti Sains Malaysia Health Campus, 16150 Kubang Kerian, Kelantan * Corresponding author email: ******@ Received 29 August 2011; received in revised form 23 September 2011; accepted 27 September 2011 Abstract . The use of ice cubes in beverages mon among patrons of food outlets in Malaysia although its safety for human consumption remains unclear. Hence, this study was designed to determine the presence of faecal coliforms and several useful water physicochemical parameters viz. free residual chlorine concentration, turbidity and pH in ice cubes from 30 randomly selected food outlets in Kubang Kerian, Kelantan. Faecal coliforms were found in ice cubes in 16 (53%) food outlets ranging between 1 CFU/100mL to >50 CFU/ 100mL, while in the remaining 14 (47%) food outlets, in samples of tap water as well as mercially bottled drinking water, faecal coliforms were not detected. The highest faecal coliform counts of >50 CFU/100mL were observed in 3 (10%) food outlets followed by 11-50 CFU/100mL and 1-10 CFU/100mL in 7 (23%) and 6 (20%) food outlets, respectively. All samples recorded low free residual chlorine concentration