NDLI: Metal removal and reduction potential of an exopolysaccharide produced by Arctic psychrotrophic bacterium Pseudomonas sp. PAMC 28620

Content Provider	Royal Society of Chemistry (RSC)
Author	Park, Sung-Hee Yang, Yung-Hun Kim, Hyun Joong Kim, Yun-Gon Kim, Jung-Ho Jeon, Jong-Min Lee, Sang Hyun Bhatia, Shashi Kant Lee, Yoo Kyung Sathiyanarayanan, Ganesan
Copyright Year	2016
Abstract	An exopolysaccharide (EPS) was produced from psychrotrophic Arctic glacier fore-field soil bacterium Pseudomonas sp. PAMC 28620 using glycerol enriched medium and the maximum productivity 7.24 ± 0.31 g L−1 of EPS was obtained after 168 h of fermentation. The EPS was purified and analysed by HPLC, GC-MS, FT-IR, 1H and 13C NMR. The EPS obtained from Arctic strain PAMC 28620 exhibits a distinctive structural composition and the constituent sugar monomers are rhamnose, galactose, glucose, fucose, mannose and ribose. The purified EPS has shown excellent flocculating and emulsification capacities with promising biotechnological and ecological implications. From the metal removal experiments, the EPS exhibited remarkable metal adsorption (99%) potential adopting the order Fe2+ > Cu2+ > Mg2+ > Zn2+ > Mn2+ > Ca2+. FE-SEM combined with EDX analysis has shown that the metal ions were complexed or immobilized onto the EPS matrix and further reduced to nanoparticles (150–950 nm). This study is significant in terms of metal removal and reduction potential of Arctic bacterial EPS and the possible ecological roles of the EPS in Arctic environment.
Starting Page	96870
Ending Page	96881
Page Count	12
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	6
Issue Number	99
Journal	RSC Advances
DOI	10.1039/c6ra17450g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Psychrophile Gas chromatography\u2013mass spectrometry PAMC Extracellular polymeric substance Glycerol Mannose Fourier-transform infrared spectroscopy Glucose Fermentation High-performance liquid chromatography Emulsion Adsorption Ribose Rhamnose Pseudomonas aeruginosa Extracellular matrix Carbohydrate Nuclear magnetic resonance Arctic Galactose Fucose
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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