Bioconversion of starch processing waste to Phellinus linteus mycelium in solid-state cultivation

Area of Science:

• Mycology
• Biotechnology
• Agricultural Science

Background:

• Mushroom cultivation relies on suitable growth media.
• Industrial byproducts offer potential sustainable substrates.
• Phellinus linteus is a medicinal mushroom with commercial interest.

Purpose of the Study:

• To evaluate starch processing waste as a substrate for Phellinus linteus mycelial cultivation.
• To determine optimal solid-state cultivation conditions (substrate concentration, pH, temperature) for P. linteus.
• To assess the economic viability of using industrial waste for mushroom production.

Main Methods:

• Solid-state cultivation of Phellinus linteus mycelia.
• Response surface methodology with a central composite design.
• Optimization of substrate concentration, pH, and temperature parameters.

Main Results:

• pH and temperature significantly influenced mycelial growth rate, while substrate concentration did not.
• Optimal conditions determined were 16.5 g/L substrate concentration, pH 6.0, and 29.7°C.
• Maximum mycelial growth rate achieved was 6.1 ± 0.8 mm/day under optimal conditions.

Conclusions:

• Starch processing waste is a viable and sustainable substrate for Phellinus linteus mycelial cultivation.
• Optimized conditions enhance mycelial growth, improving the utilization of industrial byproducts.
• This study provides a framework for optimizing fungal cultivation on waste materials.