ISSN:
1572-8943
Keywords:
bacterial growth
;
microcalorimetry
;
power–time curve equation
;
self-function regression method
;
thermokinetics
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The power-time curves of two species of bacteria, Vibro metschnikovii, Vibro bollisae were determined calorimetrically by using a 2277 bioactivity monitor. The power-time curve equation of bacterial growth in the log phase can be expressed as $$v = A(e^{k_1 t} - e^{ - kt} )$$ . A self-function recursion equation, fi=b1fi+1+b2fi+2, was obtained through the perfect non-linear function $$f(t) = A + Be^{ - k_1 t} + Ce^{ - k_2 t} $$ . A linear equation, νi/νi+1=b1+b2νi+2/νi+1, was obtained by using the self-function recursion equation. The rate constants of bacterial growth k1, the time constant of the calorimeter k, the generation times G, and the pre-exponential factors A were obtained from the power—time curve equations. Power—time curve equations of bacterial growth in the log phase are expressed for V.metschnikovii as ν=1.05(e0.0228t−e−0.0175t), and for V. bollisae as ν=1.58(e0.0278t−e−0.0170t).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1010194912678
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