Sran, Kulwinder Singh and Bisht, Bhawana and Mayilraj, Shanmugam and Choudhury, Anirban Roy (2019) Structural characterization and antioxidant potential of a novel anionic exopolysaccharide produced by marine Microbacterium aurantiacum FSW-25. International journal of biological macromolecules. ISSN 1879-0003
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An exopolysaccharide (EPS) producing strain FSW-25 was isolated from the Rasthakaadu beach Kanyakumari, Tamil Nadu India. Based on polyphasic taxonomy, the strain FSW-25 was assigned to the genus Microbacterium and found to be the closest relative of the species aurantiacum. Large quantity of EPS (7.81 g/L) was secreted by the strain upon fermentation using Reasoner's 2A medium enriched with 2.5% glucose and was designated as Mi-25. FT-IR spectrum revealed presence of hydroxyl, carbonyl, carboxyl, methyl and sulfate functional groups in purified EPS. The EPS Mi-25 has a molecular weight of 7.0 × 10 Da and mainly comprises of glucuronic acid followed by glucose, mannose and fucose. Rheological study revealed that Mi-25 possesses significant viscosity with pseudoplastic nature. Interestingly, it was observed that the EPS Mi-25 has higher antioxidant activity as compared to xanthan. The characteristics of EPS Mi-25 suggested that, it can be used as a potential antioxidant with viscosifier properties in diverse industrial sectors.
| Item Type: | Article |
|---|---|
| Additional Information: | Copyright of this article belongs to Elsevier Science |
| Uncontrolled Keywords: | Antioxidant activity; Exopolysaccharide; Marine; Microbacterium aurantiacum; Viscosifier |
| Subjects: | Q Science > QR Microbiology |
| Depositing User: | Dr. K.P.S.Sengar |
| Date Deposited: | 18 Mar 2019 16:13 |
| Last Modified: | 18 Mar 2019 16:13 |
| URI: | http://crdd.osdd.net/open/id/eprint/2167 |
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