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Optimization of Xylanase Production by Thermomyces Lanuginosus in Tomato Seed Meal Using Response Surface Methodology

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Summary

A 32 central composite experimental design was performed with the aim of optimizing xylanase production by Thermomyces lanuginosus grown on corn cobs in submerged cultures. Xylanase production was first tested on different nitrogen sources (tomato skin, tomato seed meal, corn steep liquor, meat peptone, bacto-tryptone and yeast extract). Tomato seed meal was the selected substrate to test the effect of two variables on xylanase production (corn cobs and tomato seed meal concentrations). A second-order quadratic model and a response surface method showed that the optimum condition for xylanase production was corn cobs 4.6% (w/v) and tomato seed meal 2.1% (w/v). The optimum conditions found were transferred to 7-l bioreactors, where activities as high as 1630 U/ml were obtained.

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Acknowledgement

The authors thank Prof C. Tzia (Food Science and Technology Laboratory, Chemical Engineering Department, National Technical University of Athens) for providing tomato skins and tomato seed meal.

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Authors and Affiliations

  1. Biotechnology Laboratory, Chemical Engineering Department, National Technical University of Athens, 5 Iroon Polytechniou Str, Zografou Campus, 15700, Athens, Greece

    Petros Katapodis, Vasiliki Christakopoulou & Paul Christakopoulos

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  1. Petros Katapodis
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  2. Vasiliki Christakopoulou
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  3. Paul Christakopoulos
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Correspondence to Paul Christakopoulos.

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Katapodis, P., Christakopoulou, V. & Christakopoulos, P. Optimization of Xylanase Production by Thermomyces Lanuginosus in Tomato Seed Meal Using Response Surface Methodology. World J Microbiol Biotechnol 22, 501–506 (2006). https://doi.org/10.1007/s11274-005-9063-7

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  • DOI: https://doi.org/10.1007/s11274-005-9063-7

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