Title

Esterification Modification of Konjac Glucomannan with Gallic Acid.

Authors

ZHANG Jia-qi; YAO Kai; JIA Dong-ying

Abstract

The modification of konjac glucomannan (KGM) with acetylized gallic acid and the effect of reactant ratios on the properties of modified KGM were investigated. The results indicated that the modified KGM at different reactant ratios had varied substitution degrees, water solubility, stability and viscosity. When the mass ratio of KGM to triacetyl-galloylchloride was 1: 3.6, the substitution degree of modified KGM was up to 0.6281. Triacetyls in file modified KGM could be partly removed by using sodium acetate method. The data can offer reference to the modification and fine application of konjac glucomannan.

Subjects

ESTERIFICATION; KONJAK; GALLIC acid; SOLUBILITY; VISCOSITY; SODIUM acetate

Publication

Natural Product Research & Development, 2009, Vol 21, Issue 2, p283

ISSN

1001-6880

Publication type

Academic Journal