Nonlinear analyses of periodic and chaotic time series from the peroxidase-oxidase reaction

Torben Geest, Lars F. Olsen, Curtis G. Steinmetz, Raima Larter, William M Schaffer

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Experimental time series of [O2] generated by the peroxidase-oxidase reaction were analyzed using various methods from nonlinear dynamics. The following results were obtained: (1) Aperiodic time series are chaotic as evidenced by (i) the observation of period doubling bifurcations in response to increasing the amount of 2,4-dichlorophenol in the reaction mixture, (ii) well-defined next amplitude maps, (iii) positive Lyapunov exponents corresponding to about 0.5 bits per orbital excursion, and (iv) fractal dimensions ranging from 2.6 to 2.8. Prediction profiles obtained by subjecting the data to nonlinear forecasting give further evidence of deterministic chaos. (2) The chaotic data are nonuniform, since none of the above-mentioned methods work well when applied to the continuous data. Instead, one has to use a series of maxima. (3) Conclusions 1 and 2 are supported by the fact that similar results obtain for chaotic time series generated by a simple model of the reaction.

Original languageEnglish (US)
Pages (from-to)8431-8441
Number of pages11
JournalJournal of Physical Chemistry
Volume97
Issue number32
StatePublished - 1993

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oxidase
Peroxidase
Time series
Oxidoreductases
period doubling
Fractal dimension
Chaos theory
forecasting
chaos
fractals
exponents
orbitals
profiles
predictions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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Nonlinear analyses of periodic and chaotic time series from the peroxidase-oxidase reaction. / Geest, Torben; Olsen, Lars F.; Steinmetz, Curtis G.; Larter, Raima; Schaffer, William M.

In: Journal of Physical Chemistry, Vol. 97, No. 32, 1993, p. 8431-8441.

Research output: Contribution to journalArticle

Geest, Torben ; Olsen, Lars F. ; Steinmetz, Curtis G. ; Larter, Raima ; Schaffer, William M. / Nonlinear analyses of periodic and chaotic time series from the peroxidase-oxidase reaction. In: Journal of Physical Chemistry. 1993 ; Vol. 97, No. 32. pp. 8431-8441.
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