Survival of E. coli in soils of different ph and temperature

Jong, Hse Jun (2003) Survival of E. coli in soils of different ph and temperature. [Final Year Project Report] (Unpublished)

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Abstract

The survival of Escherichia coli (E. coli) in tropical soils of different pH and temperature was studied under saturated moisture content. Soils with pH 3,4, 5, 6, and 7 were inoculated with E. coli. Soil samples (pH 3 to 7) were incubated at 20°C and 30°C in triplicates for 21 days or until all bacteria were undetectable. This study showed that decay rate of E. coli increased when the pH of soils decreased. This is no significant difference between decay rate in pH 6 and 7. E. coli survived best in pH 6 and 7. Linear decay model fit the data well in most cases. A relationship between decay rate, pH and temperature was developed. Results on this study indicate pH and temperature can effect survival of E. coli in tropical soils. Therefore, the effective management in the application and disposal of animal waste should be developed based on factors of pH and temperature.

Item Type:	Final Year Project Report
Additional Information:	Project report (B.Sc.) - Universiti Malaysia Sarawak , 2003
Uncontrolled Keywords:	Escherichia coli. E coli, decay rate, soil, fecal coliform, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, undergraduate, research, Universiti Malaysia Sarawak
Subjects:	Q Science > QR Microbiology
Divisions:	Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology Faculties, Institutes, Centres > Faculty of Resource Science and Technology
Depositing User:	Saman
Date Deposited:	09 Oct 2017 02:09
Last Modified:	07 Jul 2023 08:41
URI:	http://ir.unimas.my/id/eprint/18041

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