Application of a Cost-Effective Visible/Near Infrared Optical Prototype for the Measurement of Qualitative Parameters of Chardonnay Grapes

In this paper, a cost-effective visible/near infrared optical prototype was tested for grape maturity monitoring. The device used to quantify the qualitative parameters of Chardonnay grapes, based on combination spectroscopic data and creation predictive models. acquisitions were performed directly in field through use 12 wavelengths vis/NIR range, i.e., 450, 500, 550, 570, 600, 610, 650, 680, 730, 760, 810 860 nanometers. prediction carried out multivariate model, partial least square (PLS) regression technique built knowing real values parameters, total soluble solids (TSS), titratable acidity (TA) pH measured reference laboratory analyses. Sampling included two harvest years. most efficient model one TSS evaluation that gave R2 = 0.87 (independent test set validation). results demonstrated is able provide useful information about ripening grapes order predict its correct maturation stage and, therefore, support operators rapid objective decision making. Overall, promotes sustainable approach viticulture 4.0.