Determination of cytotoxicity and invasiveness of heterotrophic plate count bacteria isolated from drinking water
نویسندگان
چکیده
منابع مشابه
Heterotrophic plate count bacteria--what is their significance in drinking water?
While the literature documents the universal occurrence of heterotrophic plate count (HPC) bacteria in soils, foods, air, and all sources of water, there is a lingering question as to whether this group of organisms may signal an increased health risk when elevated populations are present in drinking water. This paper reviews the relevant literature on HPC bacteria in drinking water, the lack o...
متن کاملHeterotrophic Bacteria Count Index in Drinking Water and Possibility of Biofilm Formation in Household Drinking Water Treatment Devices in Sari, Iran
Background and purpose: Household drinking water treatment devices are becoming commonplace to improve the quality of drinking water, remove odor, taste, turbidity and color, pathogenic organisms, toxic chemicals, organic matter, and carcinogenic pollutants. This study aimed at investigating the Heterotrophic plate count (HPC) in drinking water and possibility of biofilm formation in household...
متن کاملCharacterization of dysgonic, heterotrophic bacteria from drinking water.
Only a small percentage of the heterotrophic bacteria encountered in water distribution systems are identifiable, because of these organisms fail to grow on the conventional media used for biochemical characterization. Organisms that would not subculture from the same standard plate count agar used for initial isolation were successfully subcultured on a low-nutrient medium, R3A. These cultures...
متن کاملInteractions between heterotrophic plate count bacteria and coliform organisms.
Studies were initiated to investigate the interactions between heterotrophic plate count bacteria and coliform organisms. We used spiked samples to show that heterotrophic plate count bacteria could reduce coliform densities by more than 3 logs within 8 days. Some heterotrophic plate count bacteria were able to cause injury to the coliform population. A significant correlation (r = 0.66; P less...
متن کاملEnumeration of heterotrophic bacteria in water for dialysis: Comparison of the efficiency of reasoner’2 agar and plate count agar
Due to the fact the incubation conditions may influence the microbiological evaluation of water for dialysis, the objective of the present study was the comparison of the efficiency of R2A and PCA media in the enumeration of heterotrophic bacteria in 193 samples of water collected in dialysis clinics from 12 cities in São Paulo, between October and December 2007. Results showed counts significa...
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ژورنال
عنوان ژورنال: Water Supply
سال: 2002
ISSN: 1606-9749,1607-0798
DOI: 10.2166/ws.2002.0093