author(s)
Anna Jensen, Lars Müller and Eva Svensson

abstract
The cultivation of Pleurotus ostreatus (oyster mushroom) enhanced with biochar holds promise for sustainable mushroom production by improving substrate properties and consumer acceptability. This research investigates the market potential and consumer acceptance of biochar-enhanced oyster mushrooms, assessing yield performance, nutritional quality, and consumer perception compared with conventional substrate-grown mushrooms. Laboratory cultivation trials using biochar-amended substrates revealed yield increases of approximately 20-25% and reduced fructification time by 4-6 days relative to conventional substrates. Nutritional analyses demonstrated elevated mineral content (e.g., potassium, calcium, zinc) and enhanced protein levels in biochar-grown mushrooms. A consumer survey indicated favorable acceptance of biochar?grown mushrooms in terms of taste, texture, and perceived environmental benefit, with a majority expressing willingness to pay a modest premium. Economic assessment showed a higher output-to-input ratio for biochar-enhanced production, highlighting its viability for commercial scaling. The findings suggest that biochar-amended cultivation of P.?ostreatus not only improves agronomic performance and nutritional value but also enjoys acceptable consumer acceptance and commercial feasibility. Furthermore, this strategy contributes to circular bio?waste utilization and sustainable agriculture.