SCI和EI收录∣中国化工学会会刊

›› 2017, Vol. 25 ›› Issue (5): 652-657.DOI: 10.1016/j.cjche.2016.07.015

• Biotechnology and Bioengineering • 上一篇    下一篇

Partition coefficient prediction of Baker's yeast invertase in aqueous two phase systems using hybrid group method data handling neural network

Carlos Eduardo de Araújo Padilha, Sérgio Dantas de Oliveira Júnior, Domingos Fabiano de Santana Souza, Jackson Araújo de Oliveira, Gorete Ribeiro de Macedo, Everaldo Silvino dos Santos   

  1. Laboratory of Biochemical Engineering, Chemical Engineering Department, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
  • 收稿日期:2016-05-06 修回日期:2016-07-14 出版日期:2017-05-28 发布日期:2017-07-06
  • 通讯作者: Everaldo Silvino dos Santos,E-mail address:everaldo@eq.ufrn.br

Partition coefficient prediction of Baker's yeast invertase in aqueous two phase systems using hybrid group method data handling neural network

Carlos Eduardo de Araújo Padilha, Sérgio Dantas de Oliveira Júnior, Domingos Fabiano de Santana Souza, Jackson Araújo de Oliveira, Gorete Ribeiro de Macedo, Everaldo Silvino dos Santos   

  1. Laboratory of Biochemical Engineering, Chemical Engineering Department, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
  • Received:2016-05-06 Revised:2016-07-14 Online:2017-05-28 Published:2017-07-06

摘要: A hybrid GMDH neural network model has been developed in order to predict the partition coefficients of invertase from Baker's yeast. ATPS experiments were carried out changing the molar average mass of PEG (1500-6000 Da), pH (4.0-7.0), percentage of PEG (10.0-20.0 w/w), percentage of MgSO4 (8.0-16.0 w/w), percentage of the cell homogenate (10.0-20.0 w/w) and the percentage of MnSO4 (0-5.0 w/w) added as cosolute. The network evaluation was carried out comparing the partition coefficients obtained from the hybrid GMDH neural network with the experimental data using different statistical metrics. The hybrid GMDH neural network model showed better fitting (AARD=32.752%) as well as good generalization capacity of the partition coefficients of the ATPS than the original GMDH network approach and a BPANN model. Therefore hybrid GMDH neural network model appears as a powerful tool for predicting partition coefficients during downstream processing of biomolecules.

关键词: Partitioning, Invertase, Aqueous Two Phase System, GMDH, Neural network

Abstract: A hybrid GMDH neural network model has been developed in order to predict the partition coefficients of invertase from Baker's yeast. ATPS experiments were carried out changing the molar average mass of PEG (1500-6000 Da), pH (4.0-7.0), percentage of PEG (10.0-20.0 w/w), percentage of MgSO4 (8.0-16.0 w/w), percentage of the cell homogenate (10.0-20.0 w/w) and the percentage of MnSO4 (0-5.0 w/w) added as cosolute. The network evaluation was carried out comparing the partition coefficients obtained from the hybrid GMDH neural network with the experimental data using different statistical metrics. The hybrid GMDH neural network model showed better fitting (AARD=32.752%) as well as good generalization capacity of the partition coefficients of the ATPS than the original GMDH network approach and a BPANN model. Therefore hybrid GMDH neural network model appears as a powerful tool for predicting partition coefficients during downstream processing of biomolecules.

Key words: Partitioning, Invertase, Aqueous Two Phase System, GMDH, Neural network