Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8333368 | International Journal of Biological Macromolecules | 2013 | 6 Pages |
Abstract
The aim of this work was to study the production of exopolysaccharide (EPS) from a novel ustilaginomycetes yeast strain Pseudozyma sp. NII 08165. The culture produced 3.5 g/l EPS on fourth day of fermentation in a glucose-based medium. The structural characterization revealed that the EPS was a polymer of glucose, galactose and mannose in the ratio of 2.4:5.0:2.6 with a molecular weight of 1.7 MDa. The pseudoplastic behaviour of aqueous EPS with a thermal stability up to 220 °C indicated its potential utility as a thickening or gelling agent in food industry. SEM studies of the EPS showed that it had compact film-like structure, which could make it a useful in preparing plasticized films. The AFM studies showed that EPS had spike-shaped microstructure. Physical properties of the exopolysaccharide determined further indicated its possible potential in different industrial applications.
Related Topics
Life Sciences
Biochemistry, Genetics and Molecular Biology
Biochemistry
Authors
Kuttuvan Valappil Sajna, Rajeev K. Sukumaran, Lalitha Devi Gottumukkala, Himani Jayamurthy, Kiran S. Dhar, Ashok Pandey,