Spectrophotometric Determination of Protein and Fat in Milk Simultaneously
Open Access
- 1 March 1970
- journal article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 53 (3), 276-278
- https://doi.org/10.3168/jds.s0022-0302(70)86197-5
Abstract
A completely clear solution was obtained by adding 5 ml of 97% acetic acid to 0.05 ml of whole milk. The protein was calculated from the absorbance at 280 mμ. Turbidity depending on fat content was developed thereafter by adding 2.5 ml of a solution containing 20% urea and 0.2% imidazole. The fat was determined from absorbance at 400 mμ with a round cuvette. This method does not require prehomogenization of milk for turbidity measurement, because of a dispersing effect by the combination of reagents. Application of this method to other food products is suggested.Keywords
This publication has 4 references indexed in Scilit:
- Turbidimetric Methods for Measuring Fat Content of Homogenized MilkJournal of Dairy Science, 1969
- Ultraviolet Spectrophotometric Determination of Protein Content in MilkJournal of Dairy Science, 1967
- Photometric Determination of Fat in MilkJournal of Dairy Science, 1966
- Spectrophotometric Determination of Protein in MilkJournal of Dairy Science, 1964