PMID- 16572855 OWN - NLM STAT- MEDLINE DCOM- 20090723 LR - 20060331 IS - 1000-3061 (Print) IS - 1000-3061 (Linking) VI - 22 IP - 1 DP - 2006 Jan TI - [Modelling a penicillin fed-batch fermentation using least squares support vector machines]. PG - 144-9 AB - The biochemical processes are usually characterized as seriously time varying and nonlinear dynamic systems. Building their first-principle models are very costly and difficult due to the absence of inherent mechanism and efficient on-line sensors. Furthermore, these detailed and complicated models do not necessary guarantee a good performance in practice. An approach via least squares support vector machines (LS-SVM) based on Pensim simulator is proposed for modelling the penicillin fed-batch fermentation process, and the adjustment strategy for parameters of LS-SVM is presented. Based on the proposed modelling method, the predictive models of penicillin concentration, biomass concentration and substrate concentration are obtained by using very limited on-line measurements. The results show that the models established are more accurate and efficient, and suffice for the requirements of control and optimization for biochemical processes. FAU - Liu, Yi AU - Liu Y AD - National Laboratory of Industrial Control Technology, Institute of Industrial Process Control, Zhejiang University, Hangzhou 310027, China. FAU - Wang, Hai-Qing AU - Wang HQ LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Sheng Wu Gong Cheng Xue Bao JT - Sheng wu gong cheng xue bao = Chinese journal of biotechnology JID - 9426463 RN - 0 (Penicillins) SB - IM MH - Biomass MH - Computer Simulation MH - *Fermentation MH - *Least-Squares Analysis MH - *Models, Biological MH - Models, Statistical MH - Nonlinear Dynamics MH - Penicillins/analysis/*biosynthesis EDAT- 2006/04/01 09:00 MHDA- 2009/07/25 09:00 CRDT- 2006/04/01 09:00 PHST- 2006/04/01 09:00 [pubmed] PHST- 2009/07/25 09:00 [medline] PHST- 2006/04/01 09:00 [entrez] PST - ppublish SO - Sheng Wu Gong Cheng Xue Bao. 2006 Jan;22(1):144-9.