ISSN:
1572-9699
Keywords:
stravation
;
survival
;
first order reaction kinetics
;
colony formation
;
urine
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract A kinetic model of colony formation was proposed by Hattori, based on a count of the colonies that appear on a plate in successive short intervals of time. In this model, three parameters (λ,t r and N∞) are defined, which reflect the ability of a bacterium to yield colonies and allow us to described the dynamics of bacterial populations in soil and ofE. coli at different growth phases. In this paper we report a reparametrization of the kinetic model of colony formation, with the aim of facilitating more accurate calculation of λ andt r. Moreover, we observed that during the starvation ofE. coli andK. pneumoniae in urine, λ can be used to assess survival, since this parameter clearly decreases during starvation. Retardation time values (t r) were similar inE. coli andK. pneumoniae throughout the starvation experimental period.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00872937
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