Galactan

Galactan (galactosan) is a polysaccharide consisting of polymerized galactose. In general, galactans in natural sources contain a core of galactose units connected by α(1→3) or α(1→6), with structures containing other monosaccharides as side-chains.
Galactan derived from "Anogeissus latifolia" is primarily α(1→6), but galactan from acacia trees is primarily α(1→3).