Related Experiment Video
Updated: Dec 28, 2025

Preparation of Fungal and Plant Materials for Structural Elucidation Using Dynamic Nuclear Polarization Solid-State NMR
Published on: February 12, 2019
Structure, properties and potential applications of phytoglycogen and waxy starch subjected to carboxymethylation
Yao Liu1, Keyu Lu1, Xiuting Hu1
1State Key Laboratory of Food Science & Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu214122, PR China.
Abstract:
The structure and properties of phytoglycogen (PG) and waxy starch (WS) from different mutants subjected to carboxymethylation (CM) were investigated. FT-IR analysis confirmed the carboxymethylation of PG and WS. The degree of substitution (DS) increased with increasing of the ratio of monochloroacetic acid to anhydroglucose unit, while DS of CM-PG was higher than that of CM-WS using equivalent modification conditions. The weight-average molecular weight (Mw) and radius of gyration (Rz) of CM-WS increased with the DS, whereas the Mw increased and Rz was nearly constant for CM-PG. The zeta-potential of CM-WS reduced and the viscosity increased significantly as DS increased, while the viscosity of CM-PG was remarkably lower than that of CM-WS with equivalent of DS. The increase of DS in CM-starches resulted in a substantial reduction of RDS accompanied by the increase of SDS and RS. The results revealed the promising application of CM-PG as a potential carrier system for bioactive ingredients.
More Related Videos
11:26Towards Biomimicking Wood: Fabricated Free-standing Films of Nanocellulose, Lignin, and a Synthetic Polycation
Published on: June 17, 2014
06:13Determination of Glucan Chain Length Distribution of Glycogen Using the Fluorophore-Assisted Carbohydrate Electrophoresis FACE Method
Published on: March 31, 2022
Related Concept Videos
Chemistry of Carbohydrates
Biosynthesis of Polysaccharides
Protein Glycosylation
Glycosylation occurs in...
Cellulose and Pectic Polysaccharides
As a cell matures, its cell wall specializes according to its type. For example, the...
Introduction to Carbohydrates
Sugars as Energy Storage Molecules