Evaluation of biochemical sources pertinence in classification of cell's physiological states by evidence theory

For analysis and modelling of the biotechnological process we must look deeper to the biological systems. Everybody knows that cell metabolism and the resulting kinetic is a complex process which could not be modelling completely by a non-linear differential system. The goal of all modelling is either the biocontrol or finding the physiological states. We want to detect the physiological states using a small number of measured signals. We present in this paper the analyses of biochemical parameters using the evidence theory. The evidence theory is also used to characterize the pertinence of the parameters. This pertinence is based on the notion of conflict. We show that our measure of conflict based on a distance provides more coherent results as the classical methods. Based on the analysis of microbiological process a method has been implemented for fermentation real-time analysis.