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Evaluation of ultrasound waves for the production of chitinase and β-1,3 glucanase by Trichoderma harzianum through SSF

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Abstract

Cell wall degrading enzymes (chitinase and β-1,3-glucanase) were produced by solid-state fermentation (SSF) using the fungus Trichoderma harzianum and different agro-industrial products, mainly residues. The influence of temperature (25–35 °C), initial moisture content (50–90% w/w), nutrient solution (1–2% v/w), and yeast extract (1–2% w/w) on enzyme activity was evaluated. The application of ultrasound during fermentation for different times (0–6 h/day) was also studied. White rice was the substrate that showed the highest chitinase and β-1,3-glucanase activities, which were 31.31 U/g for chitinase and 23.83 U/g for β-1,3-glucanase after 10 days of fermentation. Application of ultrasound waves during fermentation positively affected (p < 0.05) the enzyme activities. The best results for chitinase (51.88 U/g) and β-1,3-glucanase (39.22 U/g) were obtained with a 50% (w/w) moisture content and 4 h/day ultrasound application for 10 days of fermentation. Increases of 3.6-fold (from 14.37 to 51.88 U/g) and 3.8-fold (from 10.22 to 39.22 U/g) in activities for chitinase and β-1,3-glucanase, respectively, compared to non-sonicated fermentation, were obtained. Ultrasound technique associated with the SSF process was a promising alternative to increase the production activity of cell wall degrading enzymes: chitinase and β-1,3-glucanase.

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Acknowledgements

The authors thank the Research Support Foundation of the State of Rio Grande do Sul (FAPERGS: 17/2551-0000893-6) and National Council for Scientific and Technological Development (CNPq: 302579/2019-2) for the financial support. G.L. Zabot, M.V. Tres, R.C. Kuhn and M.A. Mazutti thank CNPq for the productivity grants.

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Correspondence to Giovani L. Zabot or Marcio A. Mazutti.

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The authors declare no commercial or financial conflict of interest.

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Mezadri, E.T., Kuhn, K.R., Schmaltz, S. et al. Evaluation of ultrasound waves for the production of chitinase and β-1,3 glucanase by Trichoderma harzianum through SSF. 3 Biotech 12, 122 (2022). https://doi.org/10.1007/s13205-022-03179-2

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  • DOI: https://doi.org/10.1007/s13205-022-03179-2

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