Saito T, Itoh T, Adachi S
Biochim Biophys Acta. 1984 Sep 7;801(1):147-50. doi: 10.1016/0304-4165(84)90223-x.
Two neutral disaccharides which comprise 74.0% of the neutral oligosaccharides other than lactose were isolated from bovine colostrum taken 6 h after parturition. The chemical structures were revealed to be galactosyl-beta-1,4-N-acetylglucosamine (N-acetyllactosamine, 70.3%) and N-acetylgalactosaminyl-beta-1,4-glucose (3.7%). The two carbohydrates were the newly found oligosaccharides from mammalian milk in the free forms. 7 days after parturition, they had completely disappeared from bovine milk.
