title: Near infrared spectroscopy coupled with radial basis function neural network for at-line monitoring of Lactococcus lactis subsp. fermentation.
abstract: In our previous work, partial least squares (PLSs) were employed to develop the near infrared spectroscopy (NIRs) models for at-line (fast off-line) monitoring key parameters of Lactococcus lactis subsp. fermentation. In this study, radial basis function neural network (RBFNN) as a non-linear modeling method was investigated to develop NIRs models instead of PLS. A method named moving window radial basis function neural network (MWRBFNN) was applied to select the characteristic wavelength variables by using the degree approximation (Da) as criterion. Next, the RBFNN models with selected wavelength variables were optimized by selecting a suitable constant spread. Finally, the effective spectra pretreatment methods were selected by comparing the robustness of the optimum RBFNN models developed with pretreated spectra. The results demonstrated that the robustness of the optimal RBFNN models were better than the PLS models for at-line monitoring of glucose and pH of L. lactis subsp. fermentation.
authors: College of Life Science, Jilin University, Jilin, Changchun 130012, China.
authors: Yan
authors: Y
authors: Liu
authors: College of Life Science, Jilin University, Jilin, Changchun 130012, China.
authors: Chengyu
authors: C
authors: Lu
authors: College of Life Science, Jilin University, Jilin, Changchun 130012, China.
authors: Qingfan
authors: Q
authors: Meng
authors: College of Life Science, Jilin University, Jilin, Changchun 130012, China.
authors: Jiahui
authors: J
authors: Lu
authors: College of Life Science, Jilin University, Jilin, Changchun 130012, China.
authors: Yao
authors: Y
authors: Fu
authors: College of Life Science, Jilin University, Jilin, Changchun 130012, China.
authors: Botong
authors: B
authors: Liu
authors: Ocean College, Hainan University, Hainan, Haikou 570228, China.
authors: Yongcan
authors: Y
authors: Zhou
authors: Ocean College, Hainan University, Hainan, Haikou 570228, China.
authors: Weiliang
authors: W
authors: Guo
authors: College of Life Science, Jilin University, Jilin, Changchun 130012, China.
authors: Lesheng
authors: L
authors: Teng
keywords: Lactococcus lactis subsp. fermentation; Near infrared spectroscopy; Radial basis function neural network