Details

Autor(en) / Beteiligte

• Mezadri, Ethiane T.
• Kuhn, Kátia R.
• Schmaltz, Silvana
• Tres, Marcus V.
• Zabot, Giovani L.
• Kuhn, Raquel C.
• Mazutti, Marcio A.

Titel

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

Ist Teil von

• 3 Biotech, 2022-05, Vol.12 (5), p.122-122, Article 122

Ort / Verlag

Cham: Springer International Publishing

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• 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.