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Analytical monitoring of alcoholic fermentation using NIR spectroscopy
Marcel Blanco1, Antonio C Peinado, Jordi Mas
1Department of Chemistry, Faculty of Sciences, Universidad Autónoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
Abstract:
Alcoholic fermentation under Saccharomyces cerevisiae yeasts is governed largely by glucose uptake, biomass formation, ethanol and glycerin production, and acidification. In this work, PLS calibration models were developed with a view to determining these analytical parameters from near infrared spectra and analytical data provided by the corresponding reference methods. The models were applied to a set of samples obtained from various fermentation processes. The glucose, ethanol, and biomass values predicted by the models exhibited a high correlation with those provided by the reference method.
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