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Eastern Regional Research Laboratory,1 Philadelphia, Pennsylvania
ABSTRACT
Acid-precipitated casein contains 4.5–7% of lipids (on dry weight basis). About 40–50% of the total lipid is extractable with petroleum ether and is presumably free fat. The remaining 50–60% of the lipids are more strongly associated with the casein. Phospholipids appear mainly in the latter fraction; ratio of phospholipid to total lipids is greater in casein than in whole milk lipids.
1 Eastern Utilization Research and Development Division, Agricultural Research Service, United States Department of Agriculture.
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