Galactan Isolated from the Midrib of the Leaves of Nicotiana tabacum

Abstract

The structure of a galactan, obtained from the pectic polysaccharides of the midrib of the leaves of Nicotiana tabacum, was investigated by methylation analysis and partial acid hydrolysis. The galactan contained only n-galactose and was composed of a straight chain of β-(1→4)-linked D-galactopyranosyl residues.