Abstract：
:Infrastructural problems force South African households to supplement their drinking water consumption from water resources of inadequate microbial quality. Microbial water quality monitoring is currently based on the Colilert®18 system which leads to rapidly available results. Using Escherichia coli as the indicator microorganism limits the influence of environmental sources on the reported results. The current system allows for understanding of long-term trends of microbial surface water quality and the related public health risks. However, rates of false positive for the Colilert®18-derived concentrations have been reported to range from 7.4% to 36.4%. At the same time, rates of false negative results vary from 3.5% to 12.5%; and the Colilert medium has been reported to provide for cultivation of only 56.8% of relevant strains. Identification of unknown sources of faecal contamination is not currently feasible. Based on literature review, calibration of the antibiotic-resistance spectra of Escherichia coli or the bifidobacterial tracking ratio should be investigated locally for potential implementation into the existing monitoring system. The current system could be too costly to implement in certain areas of South Africa where the modified H(2)S strip test might be used as a surrogate for the Colilert®18.
journal_name
Int J Environ Res Public Healthauthors
Luyt CD,Tandlich R,Muller WJ,Wilhelmi BSdoi
10.3390/ijerph9082669subject
Has Abstractpub_date
2012-08-01 00:00:00pages
2669-93issue
8eissn
1661-7827issn
1660-4601pii
ijerph9082669journal_volume
9pub_type
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abstract：:Thank you for your interest and the comments [1] on our review article "Effects of Nigella Sativa on Type-2 Diabetes Mellitus: A Systematic Review" [2]; we believe research into natural products needs to be supported, as they are at the forefront of drug discovery [...]. ...
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