ISSN: 0973-7510

E-ISSN: 2581-690X

C. Shiny Matilda and C. Shanthi
School of Bioscience and Technology, VIT University, Vellore – 632 014, India.
J. Pure Appl. Microbiol., 2016, 10 (2): 1409-1414
© The Author(s). 2016
Received: 11/02/2016 | Accepted: 19/03/2016 | Published: 30/06/2016
Abstract

The goal of this study was to evaluate the suitability of growth models to fit the growth data of metal resistant bacteria. The growth data obtained for chromium resistant isolates namely Bacillus cereus VITSH1 and Alcaligenes faecalis VITSIM2 cultured on nutrient agar amended with increasing concentrations Cr3+  Cu2+  and Cd2+  were fit into growth models. The traditional methods for enumerating bacteria are not instantaneous, therefore necessitates mathematical models to study the behavior of microbes in a specific experimental condition. The logistic and Gompertz models were applied to obtain the predicted microbial numbers and to evaluate the suitability of the models to study the growth pattern in metal stress conditions. The logistic model fit the experimental data and was found to be superior to the Gompertz model. The results suggested that the logistic model could be successfully applied to study the growth pattern of bacteria in metal stress conditions.

Keywords

Alcaligenes faecalis, Bacillus cereus, Growth, Logistic model.

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© The Author(s) 2016. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.