Characterization of an extracellular biopolymer flocculant from a haloalkalophilic Bacillus isolate (Record no. 40902)

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control field MX-MdCICY
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control field 20250625124645.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-6562
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245 10 - TITLE STATEMENT
Title Characterization of an extracellular biopolymer flocculant from a haloalkalophilic Bacillus isolate
490 0# - SERIES STATEMENT
Volume/sequential designation World Journal of MicroBiology & Biotechnology, 20(8), p.833 - 836, 2004
520 3# - SUMMARY, ETC.
Summary, etc. A biopolymer flocculant, produced by a haloalkalophilic Bacillus sp. I-471 was isolated from a sea water sample from the tidal mud flats surrounding the city of Inchon, Korea. The bioflocculant (EPS471)was produced in late logarithmic growth phase, recovered by cold ethanol precipitation of the cell-free supernatant and purified by cetylpyridinium chloride treatment. Chemical analyses of EPS471 indicated that it was an acidic polysaccharide containing neutral sugars, namely, galactose, fructose, glucose (approximate ratio of 5:2:1)and uronic acids as major and minor components, respectively. SEM studies revealed that the polymer had a porous structure with small pore size distribution indicating the compactness of the polymer. Spectroscopic analyses of the polymer by nuclear magnetic resonance (NMR)and Fourier-transform infrared (FT-IR)spectroscopy revealed the presence of carboxyl and hydroxyl groups typical for a polysaccharide and that the polymer was a heteroglycan. The degradation temperature (T d)analyzed by thermogravimetry was 307 °C. The rheological analysis showed the pseudoplastic nature of the polymer with shear-thinning behaviour. The polymer EPS471 may find possible application as an polymer for environmental bioremediation and other biotechnological processes.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element EPS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element FLOCCULANT
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element HALOALKALOPHILE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element POLYSACCHARIDE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element RHEOLOGY
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Kumar, C. G.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Joo, H. S.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Kavali, R.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Choi, J. W.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Chang, Ch. S.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1TsQU1lbcyDNbPnk1UJ4BqBfoGgp44Jmi/view?usp=drivesdk">https://drive.google.com/file/d/1TsQU1lbcyDNbPnk1UJ4BqBfoGgp44Jmi/view?usp=drivesdk</a>
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-6562 25.06.2025 25.06.2025 Documentos solicitados