Modelling the survival of an Escherichia Coli in Soil : effect of pH and temperature

Ling, Teck Yee and Kasing, A. and Jong, H. J. (2003) Modelling the survival of an Escherichia Coli in Soil : effect of pH and temperature. In: Paper presented at 3rd Federation of Asia-Pacific Microbiology Societies Conference, Kuala Lumpur 15-18th October 2003. (Unpublished)

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Abstract

Survival of E.coli on soils determines its the availability for transport during rainfall events. In this study, the survival of E.coli in soil was examined under different pH in saturated condition. Results indicated that first order decay model fit well. Decay rate of E.coli increased when pH of the soil decreased from 7.4 to 3.2 and also when temperature increased from 20 Degree Celsius to 30 Degree Celsius. Survival was prolonged in neutral and cool condition. There is no significant difference between decay rate at pH of 6.4 and 7.4. At pH of 6.4 and 7.4 at 30 Degree Celsius and at pH 7.4 at 20 Degree Celsius, there was evidence of regrowth. Quantitative relationships between decay rate and pH at 20 Degree Celsius and 30 Degree Celsius were developed for use in environmental modeling purposes.

Item Type: Proceeding (Paper)
Additional Information: Universiti Malaysia Sarawak, UNIMAS
Uncontrolled Keywords: Escherichia coli, E.coli, soil, pH, pH temperature, 2003, Universiti Malaysia Sarawak, UNIMAS, universiti, university, Borneo, Malaysia, Sarawak, Kuching, Samarahan, IPTA, education, undergraduate, research
Subjects: A General Works > AC Collections. Series. Collected works
A General Works > AC Collections. Series. Collected works
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Karen Kornalius
Date Deposited: 13 Mar 2014 02:41
Last Modified: 14 Sep 2015 01:58
URI: http://ir.unimas.my/id/eprint/992

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