Molecular Characteristics of Water-soluble Polysaccharide Extracted from Jelly Fig (Ficus awkeotsang Makino) Seeds

概要

論文の詳細を見る
The molecular characteristics of polysaccharide obtained by extracting with water from jelly fig (Ficus awkeotsang Makino) seeds were elucidated by measuring the weight-average molecular weight (M_w) and radius of gyration (R_G), indicating the molecular expanse, by the light-scattering method. The M_w and R_G values of the water-soluble jelly fig polysaccharide were 84-130×10^4 and 240-450 mm, respectively, these values being larger than those of commercial LM pectin and HM pectin. In addition, the M_w and R_G values of the water-soluble jelly fig polysaccharide initially increased after being extracted, indicating the highest values 5 hours after the extraction, and thereafter decreased. These changes in the time-course of the molecule reflected well the changes with time in the mechanical characteristics and network structure of the water-soluble jelly fig polysaccharide gel. Exponent α in the expression R_G ≤prop M_w^α was found to be 0.37. From these results, the conformation of the water-soluble jelly fig polysaccharide molecule after association by the contained inorganic elements proved to be of globular form rather than a random coil shape as a result of contraction of the molecule.
社団法人日本農芸化学会の論文
1997-09-23