New galactosyllactose containing α-glycosidic linkage isolated from ovine (Booroola dorset) colostrum

Tadasu Urashima, Tadao Saito, Junko Nishimura, Hideko Ariga

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


Three trisaccharides, tetra-, penta-, hexa- and certain higher oligosaccharides were obtained from ovine colostrum as free forms. The chemical structure of the three trisaccharides were determined by methylation and 13C-NMR analyses to be as follows: Galα13Galβ14Glc, Galβ13Galβ14Glc (3′-galactosyllactose) and Galβ16Galβ14Glc (6′-galactosyllactose). Galα13Galβ14Glc, which had been confirmed as the oligosaccharide portion of a glycolipid prepared biosynthetically from rat spleen or bone marrow, has been identified for the first time from natural sources as a free form. The trisaccharide containing α-galactosyl unit is a novel compound in mammalian milk.

Original languageEnglish
Pages (from-to)375-378
Number of pages4
JournalBBA - General Subjects
Issue number3
Publication statusPublished - 1989 Sep 15


  • (Ovine colostrum)
  • C-
  • Carbohydrate structure
  • Galactosyllactose
  • NMR
  • Oligosaccharide
  • neutral

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology


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