Characterization of a molybdenum-reducing Bacillus sp. strain khayat with the ability to grow on SDS and diesel
Molybdenum and heavy metals are toxicants that are needed to be removed from the environment as they are non-biodegradable and pose a serious threat to the ecology. A previously isolated keratin-degrading Bacillus sp. strain khayat was shown to be able to reduce molybdenum (sodium molybdate) to moly...
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| Format: | Article |
| Language: | English |
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Springer International Publishing
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/55260/ http://psasir.upm.edu.my/id/eprint/55260/1/Characterization%20of%20a%20molybdenum.pdf |
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| author | Khayat, Mohd Ezuan Abd Rahman, Mohd Fadhil Shukor, Mohd Shukri Ahmad, Siti Aqlima Shamaan, Nor Aripin Abd Shukor, Mohd Yunus |
| author_facet | Khayat, Mohd Ezuan Abd Rahman, Mohd Fadhil Shukor, Mohd Shukri Ahmad, Siti Aqlima Shamaan, Nor Aripin Abd Shukor, Mohd Yunus |
| author_sort | Khayat, Mohd Ezuan |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Molybdenum and heavy metals are toxicants that are needed to be removed from the environment as they are non-biodegradable and pose a serious threat to the ecology. A previously isolated keratin-degrading Bacillus sp. strain khayat was shown to be able to reduce molybdenum (sodium molybdate) to molybdenum blue (Mo-blue). Reduction occurred optimally at the pHs of between 5.8 and 6.8 and temperatures of between 25 and 34 °C. Glucose was the best electron donor for supporting molybdate reduction followed by sucrose, fructose, glycogen, lactose, meso-inositol and glycerol in descending order. Other requirements include a phosphate concentration between 5.0 and 7.5 mM and a molybdate concentration of between 10 and 20 mM. The absorption spectrum of the Mo-blue produced was similar to previous Mo-reducing bacterium, and closely resembles a reduced phosphomolybdate. Molybdenum reduction was inhibited by Hg (ii), Ag (i), Cu (ii), As (v) and Pb (ii) at 84.7, 78.9, 53.5, 36.8 and 27.7 %, respectively. Analysis using phylogenetic analysis resulted in a tentative identification of the bacterium as Bacillus sp. strain khayat. The bacterium was unable utilize any of the xenobiotics as sources of electron donor for reduction but the bacterium was able to grow on diesel and SDS. The ability of this bacterium to detoxify several toxicants makes this bacterium an important tool for bioremediation of multiple toxicants. |
| first_indexed | 2025-11-15T10:43:08Z |
| format | Article |
| id | upm-55260 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:43:08Z |
| publishDate | 2016 |
| publisher | Springer International Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-552602018-01-22T08:28:49Z http://psasir.upm.edu.my/id/eprint/55260/ Characterization of a molybdenum-reducing Bacillus sp. strain khayat with the ability to grow on SDS and diesel Khayat, Mohd Ezuan Abd Rahman, Mohd Fadhil Shukor, Mohd Shukri Ahmad, Siti Aqlima Shamaan, Nor Aripin Abd Shukor, Mohd Yunus Molybdenum and heavy metals are toxicants that are needed to be removed from the environment as they are non-biodegradable and pose a serious threat to the ecology. A previously isolated keratin-degrading Bacillus sp. strain khayat was shown to be able to reduce molybdenum (sodium molybdate) to molybdenum blue (Mo-blue). Reduction occurred optimally at the pHs of between 5.8 and 6.8 and temperatures of between 25 and 34 °C. Glucose was the best electron donor for supporting molybdate reduction followed by sucrose, fructose, glycogen, lactose, meso-inositol and glycerol in descending order. Other requirements include a phosphate concentration between 5.0 and 7.5 mM and a molybdate concentration of between 10 and 20 mM. The absorption spectrum of the Mo-blue produced was similar to previous Mo-reducing bacterium, and closely resembles a reduced phosphomolybdate. Molybdenum reduction was inhibited by Hg (ii), Ag (i), Cu (ii), As (v) and Pb (ii) at 84.7, 78.9, 53.5, 36.8 and 27.7 %, respectively. Analysis using phylogenetic analysis resulted in a tentative identification of the bacterium as Bacillus sp. strain khayat. The bacterium was unable utilize any of the xenobiotics as sources of electron donor for reduction but the bacterium was able to grow on diesel and SDS. The ability of this bacterium to detoxify several toxicants makes this bacterium an important tool for bioremediation of multiple toxicants. Springer International Publishing 2016-09 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/55260/1/Characterization%20of%20a%20molybdenum.pdf Khayat, Mohd Ezuan and Abd Rahman, Mohd Fadhil and Shukor, Mohd Shukri and Ahmad, Siti Aqlima and Shamaan, Nor Aripin and Abd Shukor, Mohd Yunus (2016) Characterization of a molybdenum-reducing Bacillus sp. strain khayat with the ability to grow on SDS and diesel. Rendiconti Lincei. Scienze Fisiche e Naturali, 27 (3). pp. 547-556. ISSN 2037-4631; ESSN: 1720-0776 |
| spellingShingle | Khayat, Mohd Ezuan Abd Rahman, Mohd Fadhil Shukor, Mohd Shukri Ahmad, Siti Aqlima Shamaan, Nor Aripin Abd Shukor, Mohd Yunus Characterization of a molybdenum-reducing Bacillus sp. strain khayat with the ability to grow on SDS and diesel |
| title | Characterization of a molybdenum-reducing Bacillus sp. strain khayat with the ability to grow on SDS and diesel |
| title_full | Characterization of a molybdenum-reducing Bacillus sp. strain khayat with the ability to grow on SDS and diesel |
| title_fullStr | Characterization of a molybdenum-reducing Bacillus sp. strain khayat with the ability to grow on SDS and diesel |
| title_full_unstemmed | Characterization of a molybdenum-reducing Bacillus sp. strain khayat with the ability to grow on SDS and diesel |
| title_short | Characterization of a molybdenum-reducing Bacillus sp. strain khayat with the ability to grow on SDS and diesel |
| title_sort | characterization of a molybdenum-reducing bacillus sp. strain khayat with the ability to grow on sds and diesel |
| url | http://psasir.upm.edu.my/id/eprint/55260/ http://psasir.upm.edu.my/id/eprint/55260/1/Characterization%20of%20a%20molybdenum.pdf |