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Structural characterization and antioxidant potential of a novel anionic exopolysaccharide produced by marine Microbacterium aurantiacum FSW-25.

DIR@IMTECH: CSIR-Institute of Microbial Technology

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Title Structural characterization and antioxidant potential of a novel anionic exopolysaccharide produced by marine Microbacterium aurantiacum FSW-25.
 
Creator Sran, Kulwinder Singh
Bisht, Bhawana
Mayilraj, Shanmugam
Choudhury, Anirban Roy
 
Subject QR Microbiology
 
Description 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.
 
Publisher Elsevier Science
 
Date 2019-03-04
 
Type Article
PeerReviewed
 
Identifier 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
 
Relation http://crdd.osdd.net/open/2167/