Protease inhibitors and their relation to protease activity in human milk
Protease inhibitors and protease (caseinolytic, elastinolytic and esterolytic) activity were analysed in 190 milk samples from 94 mothers from day 1 to day 160 after delivery The main protease inhibitors in human milk are α1-antichymotrypsin and α1-antitrypsin. As measured by electroimmunoassay, the level of α1-antichy-motrypsin in day 1 colostrum was higher than that in normal serum. Trace amount
