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|Type:||Artigo de periódico|
|Title:||Experimental evidence of the chaotic regime in a salicylate biosensor|
|Abstract:||In a biosensor for salicylate, developed using a modified carbon paste electrode with silica gel coated with Meldola's Blue and salicylate hydroxylase, the current time series presented a complex oscillatory pattern, for salicylate and NADH concentrations close to 2.0 X 10(-5) and 3.6 X 10(-5) mol l(-1), respectively. These experimental results suggest that the biosensor response presents chaotic characteristics. The complex temporal behavior of these series was diagnosed as deterministic chaos by measurement of the Grassberger-Procaccia dimension, and the calculation of the first Lyapunov exponent. The value determined for the correlational dimension is lower than 5. These results suggest a coupling of five or six differential equations to describe the redox reactions of the biosensor system.|
|Editor:||Elsevier Science Bv|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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