Rautaray, Debabrata ; Ahmad, Absar ; Sastry, Murali (2003) Biosynthesis of CaCO3 crystals of complex morphology using a fungus and an actinomycete Journal of the American Chemical Society, 125 (48). pp. 14656-14657. ISSN 0002-7863
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ja0374877
Related URL: http://dx.doi.org/10.1021/ja0374877
Abstract
The biosynthesis of CaCO3 by reaction of aqueous Ca2+ ions with a fungus, Fusarium sp., and an actinomycete, Rhodococcus sp. (both plant organisms), is described. In the case of the fungus, cruciform-shaped calcite crystals are obtained (SEM picture A) while the actinomycete yielded the unstable polymorph of CaCO3, vaterite (SEM picture B). Specific proteins secreted by the microorganisms are responsible for the morphology and crystallography control observed. A highlight of this approach is that the microorganisms also provide CO2 for reaction with the Ca2+ ions, making the crystals completely biogenic.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 47065 |
| Deposited On: | 06 Jul 2011 14:16 |
| Last Modified: | 06 Jul 2011 14:16 |
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