Desarrollo de un modelo matemático multivariado predictivo para la cuantificación simultánea de glucosa, fructosa y sacarosa en bebidas azucaradas mediante espectroscopía infrarroja por transformada de Fourier (FTIR)

Abstract

A PLS model based on FTIR-ATR was developed to quantify glucose, fructose, and sucrose in sweetened beverages. Using 32 mixtures and the 850–1200 cm⁻¹ region, it achieved R² ≈ 0.80 and RMSE 0.74–0.81. Although it is a rapid alternative, it showed limitations when extrapolating, requiring a broader calibration range and improved robustness.