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Controlling filamentous fungi morphology with microparticles to enhanced β-mannanase production

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Abstract

β-mannanase was produced mainly by Aspergillus species and can degrade the β-1,4-mannose linkages of galactomannans. This study was undertaken to enhance mannanase production using talcum and aluminum oxide as the microparticles, which control cell morphology of recombinant Aspergillus sojae in glucose and carob extract medium. Both microparticles improved fungal growth in glucose and carob pod extract medium. Aluminum oxide (1 g/L) was the best agent for glucose medium which resulted in 514.0 U/ml. However, the highest mannanase activity was found as 568.7 U/ml with 5 g/L of talcum in carob extract medium. Increase in microparticle concentration resulted in decreasing the pellet size diameter. Furthermore, more than 10 g/L of talcum addition changed the filamentous fungi growth type from pellet to pellet/mycelium mixture. Results showed that right type and concentration of microparticle in fermentation media improved the mannanase activity and production rate by controlling the growth morphology.

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Acknowledgments

This study was supported by the TUBITAK foundation (Project number: 112 O 167) and Akdeniz University Research Foundation (Project numbers: 2013.12.0102.017 and FDK-2015-681).

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Authors and Affiliations

  1. Göynük Culinary Arts Vocational School, Akdeniz University, 07980, Antalya, Turkey

    Ercan Yatmaz

  2. Department of Food Engineering, Faculty of Engineering, Akdeniz University, 07058, Antalya, Turkey

    Ercan Yatmaz, Ercan Karahalil, Mustafa Germec, Merve Ilgin & İrfan Turhan

  3. Department of Food Engineering, Faculty of Engineering, Çankırı Karatekin University, 18100, Çankırı, Turkey

    Mustafa Germec

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  1. Ercan Yatmaz
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  2. Ercan Karahalil
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  3. Mustafa Germec
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  4. Merve Ilgin
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  5. İrfan Turhan
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Correspondence to İrfan Turhan.

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Yatmaz, E., Karahalil, E., Germec, M. et al. Controlling filamentous fungi morphology with microparticles to enhanced β-mannanase production. Bioprocess Biosyst Eng 39, 1391–1399 (2016). https://doi.org/10.1007/s00449-016-1615-8

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  • DOI: https://doi.org/10.1007/s00449-016-1615-8

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