1998 Volume 62 Issue 1 Pages 16-21
When milk is ingested, casein micelles will be successively digested by pepsin in the stomach and trypsin in the intestine. Therefore, we digested casein micelles successively with pepsin at pH 4.0 and trypsin at pH 7.0, and recovered casein phosphopeptides (CPP) as CPP-calcium phosphate (CP) complexes. The CPP-CP complexes contained 248 mg of calcium/g peptides and 175 mg of inorganic phosphorus/g peptides, which were higher than those of CPP-CP complexes driven from acid-precipitated casein and casein micelles by tryptic digestion only. It contained more αS1-CN-5P(f59-79) than the other CPP preparations did.
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