Valorisation of agro-industrial biomass for the cultivation of edible mushrooms
2023
Sudheer, Surya | Hussain, Shehzad | Heinsalu, Tanel | Bhat, Rajeev
Agricultural biomass is rich in lignocellulose components and various types of nutrients. The disposal of this biomass causes serious environmental issues. There is always a high demand of discovering agricultural waste management methods which are cost-effective and contribute to lower environmental pollution. Mushroom cultivation is an approach that fulfills these requirements. The objective of this study is to utilize agro-industrial wastes from Estonia such as hardwood sawdust and pomace for growing different mushrooms and to find their nutritional composition. As a part of this study, the edible mushrooms Hericium erinaceus were cultivated on different combinations of hardwood sawdust with growth supplements. The yield of fresh mushrooms ranged between 300 to 500 gram per 2 kilogram and the biological efficiency was around 76.7%. The proximate analysis of H. erinaceus showed 1.14% total dietary fibre, 2.62% total protein, 88.3% moisture, and 1.79% ash. The total phenolic content and DPPH assay values were 394.4 mg (Gallic acid equivalent) and 132.9 mg (Trolox equivalent) per 100 g of the fresh mushroom samples, respectively. The study indicates that agro-industrial biomass is a good source to cultivate mushrooms and one of the promising waste valorisation methods.
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