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[A two-stage technique for producing the microbial exopolysaccaride ethapolan with improved rheological properties]
T P Pirog1, Iu R Malashenko, S K Votselko
1Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, Kiev, 03143 Ukraine.
Prikladnaia Biokhimiia I Mikrobiologiia
|September 4, 2001
Summary
Adding formaldehyde to the cultivation medium enhances the rheological properties of microbial exopolysaccharide ethapolan. This improves its practical value by altering molecular mass without decreasing yield.
Area of Science:
- Microbiology
- Biochemistry
- Polymer Science
Context:
- Microbial exopolysaccharides (EPS) are crucial biopolymers with diverse applications.
- The rheological properties of EPS significantly influence their industrial utility.
- Ethapolan, a microbial exopolysaccharide, requires optimization for enhanced performance.
Purpose:
- To investigate the impact of formaldehyde supplementation on ethapolan production and properties.
- To determine if formaldehyde affects the rheological characteristics of ethapolan.
- To understand the mechanism behind formaldehyde's influence on ethapolan.
Summary:
- A two-stage cultivation technique for ethapolan producers was developed.
- Supplementing the second-stage medium with formaldehyde improved ethapolan's rheological properties.
- Formaldehyde binding altered molecular-mass characteristics and protected cells, maintaining yield.
Impact:
- Formaldehyde treatment enhances the practical value of ethapolan through improved rheology.
- The findings offer a method to optimize EPS for industrial applications.
- Ethapolan exhibits stable, improved rheological properties post-purification due to formaldehyde binding.