title: A Feasibility Study on Monitoring Residual Sugar and Alcohol Strength in Kiwi Wine Fermentation Using a Fiber-Optic FT-NIR Spectrometry and PLS Regression.
abstract: This work aims to investigate the potential of fiber-optic Fourier transform-near-infrared (FT-NIR) spectrometry associated with chemometric analysis, which will be applied to monitor time-related changes in residual sugar and alcohol strength during kiwi wine fermentation. NIR calibration models for residual sugar and alcohol strength during kiwi wine fermentation were established on the FT-NIR spectra of 98 samples scanned in a fiber-optic FT-NIR spectrometer, and partial least squares regression method. The results showed that R2and root mean square error of cross-validation could achieve 0.982 and 3.81 g/L for residual sugar, and 0.984 and 0.34% for alcohol strength, respectively. Furthermore, crucial process information on kiwi must and wine fermentations provided by fiber-optic FT-NIR spectrometry was found to agree with those obtained from traditional chemical methods, and therefore this fiber-optic FT-NIR spectrometry can be applied as an effective and suitable alternative for analyses and monitoring of those processes. The overall results suggested that fiber-optic FT-NIR spectrometry is a promising tool for monitoring and controlling the kiwi wine fermentation process.
authors.affiliation: Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology, Huazhong Agricultural Univ., 430070, Wuhan, Hubei, China.
authors.forename: Bingqian
authors.initials: B
authors.lastname: Wang
authors.affiliation: Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology, Huazhong Agricultural Univ., 430070, Wuhan, Hubei, China.
authors.forename: Bangzhu
authors.initials: B
authors.lastname: Peng
mesh_terms: D029042:Actinidia / Q000737:chemistry*; D002241:Carbohydrates / Q000032:analysis*; D000431:Ethanol / Q000032:analysis*; D005240:Feasibility Studies; D005285:Fermentation; D005638:Fruit / Q000737:chemistry; D016018:Least-Squares Analysis; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D014920:Wine / Q000032:analysis*
chemical_list: D002241:Carbohydrates; D000431:Ethanol
keywords: alcoholic fermentation; kiwi wine; near-infrared spectroscopy; partial least squares regression