RT Journal Article
SR Electronic
A1 Šustová, Květoslava
A1 Kuchtík, Jan
T1 Analysis of goat's milk by FT Near Infrared spectroscopy
JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
YR 2014
VO 55
IS 4
SP 103
OP 110
DO 10.11118/actaun200755040103
UL https://acta.mendelu.cz/artkey/acu-200704-0013.php
AB Our work deals with a possibility of determining basic composition (fat, true protein, casein, lactose and somatic cells) of goat's milk Fourier transform near-infrared spectroscopy (FT NIR). Samples of milk were warmed to 40 °C, agitated, cooled to 20 °C, transferred to Petri dishes and analysed by reference methods and by FT NIR in reflectance mode. The measured area was spaced by a metallic mirror. Statistically significant differences between the reference values and the calculated values of NIR were not found (p = 0.05). Very high correlation coefficients were determined for goat's milk: fat 0.907, protein 0.989, casein 0.890 and lactose 0.981. The study showed that NIRS method, when samples of milk are measured on Petri dishes, is a useful technique for the prediction of fat, true protein, casein and lactose in goat's milk. Results of calibration for somatic cells are not accurate (correlation coefficients of calibration 0,885 and correlation coefficients of validation 0.566).