Study on Properties of Caesalpinia spinosa Polysaccharide Gum

The chemical components of Caesalpinia spinosa seeds,the chemical structure and its rheological properties of polysaccharide gum were discussed.It was determined that endosperm accounted for about 30.5% of the total weight of Caesalpinia spinosa seeds and the protein content reached 13.2% of the seed weight.Analyses by GC,PC,IR and NMR showed that the endosperm of Caesalpinia spinosa seeds contained 78.0% of galactomannan with galactose to mannose rationed by 1:2.4.The chemical structure of galactomannan is β-(1,4)-linked D-mannopyranosyl residues as the main chain and α-(1,6)-linked D-galactopyranosyl residues in the side chain.Caesalpinia spinosa polysaccharide gum is non-newton fluid.Its viscosity of 1% concentration is 313 mPa.s(30℃,170S^-1).And Caesalpinia spinosa polysaccharide gum can be synergistic thickening and synergistic gelling with Xanthangum or carrageenan.