In Peru, the beer industry produced 998 million liters during 2020, and its manufacturing process generates various agroindustrial waste such as Brewer Spent Grain (BSG), equivalent to 80% of all agroindustrial waste generated approximately 570 million tons in the year. year 2020. This research aims to establish whether BSG as a residual product can function as a substrate for the cultivation and production of Pleurotus ostreatus mushrooms, offering an alternative to existing commercial substrates by evaluating the performance of its characteristics such as pH level, presence of ash, nitrogen, its biological efficiency (kg of mushroom / kg substrate), its productivity (biological efficiency / cultivation time), among other factors. An experimental design of mushroom cultivation was carried out according to the conventional assisted fruiting method in polyethylene bags. The laboratory analyzes concluded that BSG as a substrate for the cultivation of Pleurotus ostreatus had a biological efficiency of 27,25% lower than the results of other substrates such as corn and coffee pulp, which have a biological efficiency of 68% and 70% respectively; although it presented a productivity of 0,605 compared to similar studies that on average had a productivity of 0,75. The study showed that BSG is a good substrate for the cultivation of Pleurotus ostreatus and it is expected that its performance can improve when used as a mixed miscellaneous substrate, offering a new circular economy alternative for the brewing industry.

Keywords

Circular economy, Oyster Mushrooms, BSG, Pleurotus ostreatus, Agroindustrial Waste, Brewing Industry, barley.