Enzymolgy and cytotoxicity of pathogenic heterotrophic plate count bacteria isolated from untreated 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 کاملIsolation and Identification of Pathogenic Bacteria from Drinking Water
Drinking water microbiological quality was primarily determined by enumeration of “indicator organisms”, whose presence indicates faecal contamination. The presence of the indicators is often a key in assessing potential public health risks due to bacterial pathogens and is used in drinking water quality regulations and guidelines in many countries. The enumeration of fecal coliform specificall...
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ژورنال
عنوان ژورنال: Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie
سال: 2014
ISSN: 2222-4173,0254-3486
DOI: 10.4102/satnt.v33i1.1207