Abstract
Reports from bottled water (BW) industries show a rapidly increasing rate of global bottled water consumption. The present paper contains data on chemical and microbial quality of bottled waters marketed in Gonabad city, Iran. The data on the effect of time and storing conditions on microbial quality of bottled water also is reported. The physical and chemical parameters of all 9 studied BW brands meet well with those mentioned on the labels. All BW sampled also were free of pathogenic indicators (total coliforms, fecal coliforms, fecal streptococci and clostridium perfringens). BWs kept in refrigerator have minimal heterotrophic and pathogenic bacterial count. The highest bacterial count was observed when BWs were exposed to indirect sunlight at room temperature. Presence of heterotrophic and especially pathogenic bacteria reduced significantly when the samples were placed to direct sunlight. In all samples, apart from where they were kept, the heterotrophic and pathogenic bacterial counts showed an increasing trend after bottling.
Highlights
Subject area More specific subject area Type of data How data was acquired Data format Experimental factors
Graph The chemical parameters were determined using a Spectrophotometer (DR-5000 Spectrophotometer, USA) Microbial parameters of bottled water were determined by heterotrophic plate count, presence absence analysis (P/A), most probable number (MPN) Raw, analyzed Bottled waters kept in different conditions were used to collect data on the effect of time and storage condition on heterotrophic and pathogenic bacterial count
Protocol data While all countries are experiencing growing trend of bottled water consumption, it is necessary to know the effect of storing condition on its microbial quality
Summary
Chemical and microbial quality of bottled drinking water in Gonabad city, Iran: Effect of time and storage conditions on microbial quality of bottled waters. Mahmoud Shamsa,b, Mehdi Qasemic, Mojtaba Afsharniac, Alireza Mohammadzadehd,*, Ahmad Zareic,*. A Department of Environmental Health Engineering, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran b Social Determinants Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran c Department of Environmental Health Engineering, Faculty of Health, Social Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran d Department of Microbiology, Faculty of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran
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