| Evaluation of chromium(VI) removal behaviour by two isolates of Synechocystis sp. in terms of exopolysaccharide (EPS) production and monomer composition. | |
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MedLine Citation:
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PMID: 19560345 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Chromium(VI) removal and its association with exopolysaccharide (EPS) production in cyanobacteria were investigated. Synechocystis sp. BASO670 produced higher EPS (548 mg L(-1)) than Synechocystis sp. BASO672 (356 mg L(-1)). While the EC(50) of the Cr(VI) for Synechocystis sp. BASO670 and Synechocystis sp. BASO672 were determined as 11.5 mg L(-1), and 2.0 mg L(-1), respectively, there was no relation between Cr(VI) removal and EPS production. Synechocystis sp. BASO672, which has higher EPS value, removed (33%) more Cr(VI) than Synechocystis sp. BASO670. Monomer compositions of EPS of each of the isolates were determined differently. Synechocystis sp. BASO672 which removed higher Cr(VI), had higher values of uronic acid and glucuronic acid (192 microg/mg and 89%, respectively). Our results showed that EPS might play a role in Cr(VI) tolerance. Monomer composition, especially uronic acid and glucuronic acid content of EPS may have enhanced Cr(VI) removal. |
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Authors:
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Sahlan Ozturk; Belma Aslim; Zekiye Suludere |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-06-26 |
Journal Detail:
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Title: Bioresource technology Volume: 100 ISSN: 1873-2976 ISO Abbreviation: Bioresour. Technol. Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-08-18 Completed Date: 2009-12-03 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: England |
Other Details:
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Languages: eng Pagination: 5588-93 Citation Subset: IM |
Affiliation:
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Nevsehir University, Faculty of Science and Arts, Department of Biology, 50300 Nevsehir, Turkey. sahlan.ozturk@nevsehir.edu.tr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Biotechnology
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methods* Chromatography, High Pressure Liquid Chromium / analysis*, chemistry Cyanobacteria / metabolism Glucuronic Acid / chemistry Metals, Heavy Microbiology Microscopy, Electron, Scanning / methods Polysaccharides / chemistry* RNA, Ribosomal, 16S / chemistry Spectrometry, X-Ray Emission / methods Synechocystis / metabolism* Uronic Acids / chemistry |
| Chemical | |
Reg. No./Substance:
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0/Metals, Heavy; 0/Polysaccharides; 0/RNA, Ribosomal, 16S; 0/Uronic Acids; 576-37-4/Glucuronic Acid; 7440-47-3/Chromium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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