ABSTRACT
A regression equation was developed for estimating solids-not-fat from fat, protein and lactose contents in fluid cow's milk. The standard error of estimate was 0.0516%. It was found that the estimate by the equation of Cervinka et al. was low at the high level of solids-not-fat. The developed regression equation gave a more accurate estimate than the equation of Cervinka et al.
ABSTRACT
A collaborative study was conducted on fluid milk for total solids measurement by a microwave oven and the AOAC method. The microwave oven method performed better than the AOAC method in repeatability and reproducibility of total solids measurement. In addition, comparative tests of the AOAC, microwave and vacuum oven methods showed high correlation coefficients between the methods. It was also observed that the microwave and vacuum oven methods consistently measured about 0.2% higher in total solids than did the AOAC method. This tendency may be attributed to the browning which occurred with the AOAC method.
