Formulation and Engineering of Biomaterials
Fermentation medium for collagenase production by Penicillium aurantiogriseum URM4622
Article first published online: 19 JUL 2011
DOI: 10.1002/btpr.664
Copyright © 2011 American Institute of Chemical Engineers (AIChE)
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How to Cite
Lima, C. A., Viana Marques, D. A., Neto, B. B., Lima Filho, J. L., Carneiro-da-Cunha, M. G. and Porto, A. L. F. (2011), Fermentation medium for collagenase production by Penicillium aurantiogriseum URM4622. Biotechnol Progress, 27: 1470–1477. doi: 10.1002/btpr.664
Publication History
- Issue published online: 10 OCT 2011
- Article first published online: 19 JUL 2011
- Accepted manuscript online: 17 JUN 2011 07:17AM EST
- Manuscript Revised: 17 MAY 2011
- Manuscript Received: 28 FEB 2011
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- CNPq
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Keywords:
- collagenase;
- optimization;
- inexpensive media;
- central composite design;
- Penicillium aurantiogriseum
Abstract
Medium composition and culture conditions for maximal collagenase production by Penicillium aurantiogriseum URM4622 were optimized using a response surface approach. A full two-level design on three factors (initial medium pH, soybean flour concentration, and temperature) was employed to identify the most significant fermentation parameters for collagenase production, and a subsequent central composite design (CCD) was used to find the optimal levels of the two most significant factors (initial medium pH and soybean flour concentration). The design results indicated that the initial medium pH and the temperature had significant negative main effects, whereas the substrate concentration had a positive effect on the collagenase production. The maximum collagenolytic activity predicted by the fitted response surface was expected to occur at pH 7.21, 1.645% soybean flour concentration and 24°C. Three replicate experiments were run at these conditions and yielded an activity response of 283.36 ± 1.33 U, which not only is the highest obtained in this study but also represents a 5-fold increase over the lowest response observed in the initial design. Since all experiments were carried out with an inexpensive substrate, the final results point out to a cost-effective medium for collagenase production with potential industrial-scale applications. © 2011 American Institute of Chemical Engineers Biotechnol. Prog., 2011

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