Development of chemometric models using Vis-NIR and Raman spectral data fusion for assessment of infant formula storage temperature and time. (January 2021)

• Record Type: Journal Article
• Authors: Wang, Xiao; Esquerre, Carlos; Downey, Gerard; Henihan, Lisa; O'Callaghan, Donal; O'Donnell, Colm
• Is Part Of: Innovative food science & emerging technologies. Volume 67(2021)
• Publication Date: 2021-01
• Subjects: Visible and near-infrared spectroscopy (Vis-NIR) -- Raman spectroscopy -- Infant formula (IF) storage -- Partial least squares (PLS) -- Support vector machine (SVM) -- Data fusion; Food -- Biotechnology -- Periodicals; Food industry and trade -- Technological innovations -- Periodicals; Aliments -- Biotechnologie -- Périodiques; Food -- Biotechnology; Periodicals; Electronic journals; 664.005
• DOI: 10.1016/j.ifset.2020.102551
• Languages: English
• ISSNs: 1466-8564

Abstract

Abstract: This study evaluated the potential of Vis-NIR and Raman spectral data fusion combined with PLS and SVM chemometric models developed using a large dataset (n = 1700) of commercial infant formula (IF) samples to (i) discriminate between different IF storage temperature (20, 37 °C) and (ii) predict IF storage time (0–12 months). Three interval-based PLS variable selection methods (forward interval PLS (FiPLS), backward interval PLS (BiPLS) and synergy interval PLS (SiPLS)) and SVM-recursive feature elimination (SVM-RFE) methods were compared for model development. The best IF storage temperature discrimination model was developed using SVM classification (SVMC) and Vis-NIR spectra (400–2498 nm) (AccuracyCV = 99.82%, AccuracyP = 100%). SVM regression (SVMR) models developed using medium level data fusion (features selected by SVM-RFE) had the lowest root mean square error (RMSE) values for IF samples stored at either temperature, 20 °C or 37 °C (RMSECV = 0.7–0.8, RMSEP = 0.6–0.9). Industrial relevance: Spectroscopic technologies, including Vis-NIR and Raman spectroscopy have been widely applied for process analysis and increasingly for on-line process monitoring in areas of chemicals, food processing, agriculture and pharmaceuticals, etc. Due to their rapid measurement and minimal or no sample preparation, they are highly suitable for in-line process monitoring. This study demonstrates that Vis-NIR and Raman process analytical tools either individually or combined may be employed for quality assessment and process control of IF manufacture. Graphical abstract: Unlabelled Image Highlights: PLS and SVM models developed for commercial infant formula storage temperature and time assessment. Large commercial infant formula Vis-NIR and Raman spectral dataset (n = 1700) studied. Interval-based PLS methods and SVM-recursive feature elimination (SVM-RFE) compared. SVMC developed using full Vis-NIR spectra had the best storage temperature discrimination. SVMR developed using medium level data fusion had the best storage time predictions.