Bacterial exopolysaccharides from extreme marine habitat of Southern Ocean: Production and partial characterization

• Published in: Gayana (Concepción)
• Main Authors: Banerjee, Aparna, Gupta, Pratibha, Nigam, Vinod, Bandopadhyay, Rajib
• Format: Article in Journal/Newspaper
• Language: English
• Published: Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2019
• Subjects: Southern Ocean; exopolysaccharides characterization; marine bacteria; Océano Antárctico; bacterias marinas; caracterización de exopolisacáridos; Alta; Baja; Indian
• Online Access: https://gayana.cl/index.php/gn/article/view/112; https://doi.org/10.4067/S0717-65382019000200126

Deep marine microorganisms survive under extreme ecological settings and harsh environmental conditions of low temperature, high salinity, and high atmospheric pressure making it significant of scientific interest. Southern Ocean (SO) is one such example of deep marine ecosystem and the microorganisms inhabiting in such hostile environment may produce different bioactive secondary metabolites. SO (Indian Sector) is relatively less documented in terms of microbial composition and community dynamics. The present study involves isolation of exopolysaccharides (EPSs) from three potent SO (Indian Sector) bacteria, optimization of the EPS production and partial characterization of them. Three different EPSs show varying structural conformation, that is from porous to strong flakes mimicking polymeric structure with C/N ratio ranging between 4 - 11. FTIR spectra have exhibited the presence of different active groups of carbohydrate moieties, water molecules and protein-associated amides. EPSs produced by marine microorganisms show high biotechnological promises such as drug carrier in pharmaceutical field, emulsifier and cryo- protectant in food-processing industry, detoxification of petrochemical oils and much more. The three bacterial isolates in this study showed potential of producing EPS biopolymer that can be further explored in terms of its proper biotechnological applications. Los microorganismos marinos de zonas profundas sobreviven en entornos ecológicos extremos y condiciones ambientales adversas de baja temperatura, alta salinidad y alta presión atmosférica, lo que los hace tener un interés científico particularmente significativo. El Océano Antártico, es uno de esos ejemplos de ecosistemas marino profundo, y los microorganismos que habitan en ese ambiente hostil pueden producir diferentes metabolitos secundarios bioactivos. El Océano Antártico (sector indio) está relativamente menos documentado en términos de composición microbiana y dinámica comunitaria. El presente estudio consiste en el aislamiento de ...