Sialyllactose occurs as free lactones in ovine colostrum

Tadashi Nakamura, Tadasu Urashima, Miyuki Nakagawa, Tadao Saito

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


Three sialyl oligosaccharide fractions were separated from ovine colostrum by gel filtration, anion exchange chromatography and normal-phase HPLC. They were characterized by 1H-NMR spectrometry as follows: Neu5Acα2→3Galβ1→4Glc, Neu5Gcα2→6Galβ1→4Glc and three forms of Neu5Gcα2→3Galβ1→4Glc, namely Neu5Gcα2→3Galβ1→4Glc itself, its lactone derivative between the carboxyl group of Neu5Gc and Gal OH-2 and another lactone derivative between the carboxyl group and Gal OH-4. In this study, Neu5Gc-lactose lactones, in their free form, have been isolated for the first time from any natural sources including milk or colostrum. Copyright (C) 1998 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)286-292
Number of pages7
JournalBiochimica et Biophysica Acta - General Subjects
Issue number3
Publication statusPublished - 1998 Aug 24


  • Colostrum
  • Lactone
  • Ovine
  • Sialyllactose

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology


Dive into the research topics of 'Sialyllactose occurs as free lactones in ovine colostrum'. Together they form a unique fingerprint.

Cite this