Fermentation medium for collagenase production by Penicillium aurantiogriseum URM4622

Authors

  • Carolina A. Lima,

    1. Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Lins do Rego, s/n, 50670-901, Recife, PE, Brazil
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  • Daniela A. Viana Marques,

    1. Dept. of Biochemical and Pharmaceutical Technology, University of São Paulo, Av. Prof. Lineu Prestes, 580, Bloco 16, Cidade Universitária, CEP 05508-000, São Paulo, SP, Brazil
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  • Benício Barros Neto,

    1. Dept. of Fundamental Chemistry, Federal University of Pernambuco, Av. Prof. Luís Freire, s/n, CEP 50740-540, Recife, Pernambuco, Brazil
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  • José L. Lima Filho,

    1. Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Lins do Rego, s/n, 50670-901, Recife, PE, Brazil
    2. Dept. of Biochemistry, Federal University of Pernambuco, Av. Professor Moraes Rego, s/n, Campus Universitário 50670-901, Recife, PE, Brazil
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  • Maria G. Carneiro-da-Cunha,

    1. Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Lins do Rego, s/n, 50670-901, Recife, PE, Brazil
    2. Dept. of Biochemistry, Federal University of Pernambuco, Av. Professor Moraes Rego, s/n, Campus Universitário 50670-901, Recife, PE, Brazil
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  • Ana L. F. Porto

    Corresponding author
    1. Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Lins do Rego, s/n, 50670-901, Recife, PE, Brazil
    2. Dept. of Morphology and Animal Physiology, Federal Rural University of Pernambuco, Av. Dom Manoel de Medeiros, s/n, 52171-900, Recife, PE, Brazil
    • Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Lins do Rego, s/n, 50670-901, Recife, PE, Brazil
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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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