Related Experiment Video
Updated: Mar 6, 2026

Automated Modular High Throughput Exopolysaccharide Screening Platform Coupled with Highly Sensitive Carbohydrate Fingerprint Analysis
Published on: April 11, 2016
Characterization of high yield exopolysaccharide produced by Phyllobacterium sp. 921F exhibiting moisture preserving
Yinping Li1, Gaoli Zhang2, Chunying Du2
1College of Food Science and Engineering, Ocean University of China, Qingdao 266003, PR China; School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China.
Abstract:
A new strain bacteria was isolated and named as Phyllobacterium sp. 921F, due to its high production capacity of exopolysaccharide (EPS). Characterization of physico-chemical properties of the EPS and optimization for high production were conducted to aim at industrial applications. The optimum pH and temperature were 7.0 and 30°C, respectively. The following scale-up fermentation was carried out in 30L bioreactor and amounts of EPS (21.9g/L) were produced. The EPS with a molecular mass of 1082kDa was composed of glucose, galactose, and pyruvate. The EPS solution behaved as Newtonian at low concentrations (≤0.3%) and as shear thinning at higher concentration (e.g, 1%). The moisture retention ability of the EPS was found to be superior to hyaluronic acid. Results suggest that Phyllobacterium sp. 921F is a good candidate for large-scale production of the EPS which might be utilized in food and cosmetics industries.
Related Concept Videos
Cellulose and Pectic Polysaccharides
As a cell matures, its cell wall specializes according to its type. For example, the...
Biosynthesis of Polysaccharides
Formation of Lipopolysaccharides
Endospores and Sporulation
Moisture Content and Bulking of Aggregate
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
Gene Regulation During Sporulation

