KOPRI Repository

Exopolysaccharide from psychrotrophic Arctic glacier soil bacterium Flavobacterium sp. ASB 3-3 and its potential applications

Cited 9 time in scopus
Metadata Downloads
Title
Exopolysaccharide from psychrotrophic Arctic glacier soil bacterium Flavobacterium sp. ASB 3-3 and its potential applications
Other Titles
북극 빙하 토양에서 분리한 내냉성 세균 Flavobacterium sp. ASB 3-3의 세포외다당류
Authors
Ganesan Sathiyanarayanan
Yang, Yung-Hun
Lee, Yoo Kyung
Jung, Ji Young
Jung, Seunho
Jung, Daham
Park, Sung-Hee
Kim, Yun-Gon
Seo, Hyung Min
Kim, Jung-Ho
Shashi Kant Bhatia
Yi, Da-Hye
Keywords
Exopolysaccharide; Flavobacterium; arctic glacier soil
Issue Date
2015
Citation
Ganesan Sathiyanarayanan, et al. 2015. "Exopolysaccharide from psychrotrophic Arctic glacier soil bacterium Flavobacterium sp. ASB 3-3 and its potential applications". RSC ADVANCES, 5(103): 84492-84502.
Abstract
A novel exopolysaccharide (EPS) producing psychrotrophic bacterium Flavobacterium sp. ASB 3-3 was isolated from Arctic glacier soil and identified. The optimum fermentation conditions for EPS production were an initial medium pH of 7.2 and an initial inoculum size of 5% (v/v). The maximum yield of EPS (7.25 ± 0.26 g L?1) was obtained after cultivation at 25 °C for 120 h with glycerol as the sole carbon source. The EPS was purified and its structural characteristics were analyzed by 1H and 13C NMR. The predominant repeating units of this EPS are (α, β) D-glucose and D-galactose and it is different from the structure of EPSs produced by other Arctic and Antarctic bacteria, which have mannose units. In addition, EPS has demonstrated a comparable emulsifying property than SDS and flocculating properties with kaolinite, suggesting their potential applications in various industries. The EPS also significantly improved the tolerance of Flavobacterium sp. and Escherichia coli from freeze?thaw cycles, suggesting that it might be used to survive in polar regions and it can have possible usage as microbial cryoprotectants.
URI
http://repository.kopri.re.kr/handle/201206/7408
DOI
http://dx.doi.org/10.1039/C5RA14978A
Files in This Item
General Conditions
      ROMEO Green
    Can archive pre-print and post-print or publisher's version/PDF
      ROMEO Blue
    Can archive post-print (ie final draft post-refereeing) or publisher's version/PDF
      ROMEO Yellow
    Can archive pre-print (ie pre-refereeing)
      ROMEO White
    Archiving not formally supported

    qrcode

    Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

    Browse