title: Presence of two neutral disaccharides containing N-acetylhexosamine in bovine colostrum as free forms.
abstract: 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.
mesh_terms: D000116:Acetylgalactosamine / Q000032:analysis; D000117:Acetylglucosamine / Q000032:analysis; D000606:Amino Sugars / Q000032:analysis*; D000818:Animals; D002236:Carbohydrate Conformation; D002417:Cattle; D003126:Colostrum / Q000032:analysis*; D004187:Disaccharides / Q000032:analysis*; D005260:Female; D013058:Mass Spectrometry; D008892:Milk / Q000032:analysis; D011247:Pregnancy
chemical_list: D000606:Amino Sugars; D004187:Disaccharides; C000458:N-acetyllactosamine; C042746:N-acetylgalactosaminyl-(1-4)-glucose; D000116:Acetylgalactosamine; D000117:Acetylglucosamine