Skip to main content
Journal cover image

Shear degradation as a probe of microalgal exopolymer structure and rheological properties

Publication ,  Journal Article
Ramus, J; Kenney, BE
Published in: Biotechnology and Bioengineering
1989

The bulk rheological properties of exopolymers produced by three species of microalgae are destroyed by shear stress. The properties are drag reduction in capillary pressure flow and low shear rate viscosity. As such, shear stress constitutes an experimental probe into the macromolecular structure which effects bulk rheological properties. Native and sheared exopolymer solutions were subjected to analysis by electrophoresis, size exclusion chromatography, hydrolysis, dialysis, and reducting end-group analysis. The evidence indicates that shearing did not break the glycoside backbone of these exopolymers; rather, shearing disrupted subtle interactions between copolymers. The interactions necessary for bulk rheological properties are likely at the quaternary level of macromolecular organization, specifically weak aggregations.

Duke Scholars

Published In

Biotechnology and Bioengineering

ISSN

0006-3592

Publication Date

1989

Volume

34

Issue

9

Start / End Page

1203 / 1208

Related Subject Headings

  • Biotechnology
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Ramus, J., & Kenney, B. E. (1989). Shear degradation as a probe of microalgal exopolymer structure and rheological properties. Biotechnology and Bioengineering, 34(9), 1203–1208.
Ramus, J., and B. E. Kenney. “Shear degradation as a probe of microalgal exopolymer structure and rheological properties.” Biotechnology and Bioengineering 34, no. 9 (1989): 1203–8.
Ramus J, Kenney BE. Shear degradation as a probe of microalgal exopolymer structure and rheological properties. Biotechnology and Bioengineering. 1989;34(9):1203–8.
Ramus, J., and B. E. Kenney. “Shear degradation as a probe of microalgal exopolymer structure and rheological properties.” Biotechnology and Bioengineering, vol. 34, no. 9, 1989, pp. 1203–08.
Ramus J, Kenney BE. Shear degradation as a probe of microalgal exopolymer structure and rheological properties. Biotechnology and Bioengineering. 1989;34(9):1203–1208.
Journal cover image

Published In

Biotechnology and Bioengineering

ISSN

0006-3592

Publication Date

1989

Volume

34

Issue

9

Start / End Page

1203 / 1208

Related Subject Headings

  • Biotechnology