Biological Efficiency, Nutritional Composition, and Bioactive Compound Contents of the Lung Oyster Mushroom Pleurotus pulmonarius (Agaricomycetes) Cultivated on Spent Mushroom Substrates.

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Citation abstract

Spent mushroom cultivation substrate is sometimes used to make organic fertilizers, but most of it is discarded. This study aimed to evaluate the efficiency of spent mushroom substrate (SMS) as a substitute substrate for cultivating Pleurotus pulmonarius. Seven types of SMS were employed to cultivate P. pulmonarius to assess yield, biological efficiency, nutritional composition, and bioactive compound content in the fruiting bodies. The SMS of Agaricus marmoreus showed the highest yield (253.88 g/bag) and biological efficiency (63.47%). Variations in the nutritional composition of fruiting bodies cultivated on different SMSs were observed. The highest levels of ergothioneine (2.17 mg/g dry matter) and adenosine (7.71 mg/g dry matter) were found in fruiting bodies grown on P. pulmonarius and Hymenopellis radicata SMSs, respectively. These findings present a promising strategy to reduce cultivation costs associated with P. pulmonarius and manage SMSs effectively.