Wydział Chemii

Sylwester Mazurek

Roman Szostak

Tomasz Paweł Czaja

Andrzej Zachwieja

2015

Talanta

138

285-289

10.1016/j.talanta.2015.03.024

Naukowa

Angielski

Artykuł

Fat, protein, carbohydrates and dry matter were quantified in commercial bovine milk samples, with the relative standard errors of prediction (RSEP) in the 3.4–6.1% range, using the partial least squares (PLS) method based on Raman spectra of liquid milk samples. Results of a better quality were obtained from a PLS model derived from IR spectra registered using single reflection ATR diamond accessory, which yielded RSEP values of 2.4–4.4%. The data indicated IR single reflection ATR spectroscopy and Raman spectroscopy in combination with multivariate modelling using the PLS method, allowed for the reliable, simultaneous quantitative determination of macronutrients in milk. The low signal to noise ratio of Raman spectra affects the quality of fat quantification especially for strongly defatted milk samples.

Milk analysis, Raman spectroscopy, ATR, quantitative analysis, Multivariate calibration

http://dx.doi.org/10.1016/j.talanta.2015.03.024

http://www.elsevier.com