Simultaneous Determination of Milk Fat (Butyric Acid) and Total Fat By 1-min Transesterification Directly In the Food

摘要

The method for determining fat contents and fatty acid compositions through fast transesterification directly in the raw, homogenized food is extended to include the measurement of butyric acid. This enables the determination of contents of milk fat and total fat from the same analysis. The method needs some adjustments, primarily concerning the solvents. Possible sources of error are analyzed. GC ana- lysis is the main source of uncertainly. Results with a reliable accuracy of ± 3-4/100 can be achieved.