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Rambla , S. Garrigues , M. Rambla and N. A simple analytical procedure was developed for the direct determination of sugars in fruit juices apple, orange, grape and soft drinks. The method is based on the partial least squares treatment of attenuated total reflectance Fourier transform infrared spectrometric data obtained in the wavenumber range — cm —1 and does not require any sample pre-treatment.
Absorbance and first-derivative spectra were employed for measurements, using a reduced set of eight aqueous standard mixtures of glucose, fructose and sucrose at two concentration levels for calibration. The limits of detection found for absorbance measurements were 0. Relative standard deviations varied from 1. References H. Belitz and W. Chang, E. Holm, J. Schwarz and P. Rayas-Duarte, Anal. Back, D. Michalska and P.
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Boulou, N. Dupuy, M. Meurens and J. Huvenne, Appl. Kemsley, L. Zhuo, M. Hammouri and R. Wilson, Food Chem. Meurens, B. Sombret, P. Legrand and J. Beebe and B. Kowalski, Anal. Blanco, J. Coello, S. Maspoch and A. Cela, R. Picque, D. Lefier, R. Grappin and G.
Analisis Quimico Cuantitativo - 2b : Edicion Con CD ROM