TY - JOUR U1 - Wissenschaftlicher Artikel A1 - Stefanakis, Mona A1 - Bassler, Miriam A1 - Böltzig, Thorsten A1 - Ostertag, Edwin A1 - Allnoch, Dominik A1 - Zuber, Ralf A1 - Brecht, Marc A1 - Rebner, Karsten T1 - Improved process control by using the effective scattering coefficients to determine the fat content in homogenized cow-based milk with multivariate data modeling JF - ACS food science & technology N2 - Commercially available homogenized cow- and plant-based milks were investigated by optical spectroscopy in the range of 400–1360 nm. Absorbance spectra, the effective scattering coefficient μs′, and the spectral absorption coefficient μa were recorded for 23 milk varieties and analyzed by multivariate data analysis. Cow- and plant-based milks were compared and discriminated using principal component analysis combined with a quadratic discriminant analysis. Furthermore, it was possible to discriminate the origin of plant-based milk by μa and the fat content in cow-based milk by μs′. Partial least squares regression models were developed to determine the fat content in cow-based milk. The model for μs′ proved to be the most efficient for this task with R2 = 0.98 and RMSEP = 0.19 g/100 mL for the external validation. Thus, optical spectroscopy together with multivariate data analysis is suitable for routine laboratory analysis or quality monitoring in the dairy production. KW - milk KW - principal component analysis KW - discriminant analysis KW - partial least squares regression KW - absorbance spectroscopy KW - process analysis KW - effective scattering KW - coefficient KW - absorption coefficient Y1 - 2022 SN - 2692-1944 SS - 2692-1944 U6 - https://doi.org/10.1021/acsfoodscitech.1c00435 DO - https://doi.org/10.1021/acsfoodscitech.1c00435 VL - 2 IS - 3 SP - 548 EP - 557 S1 - 10 PB - American Chemical Society CY - Washington D.C. ER -