Caffeine metabolism during cultivation of oyster mushroom (Pleurotus ostreatus) with spent coffee grounds

Spent coffee grounds influence on Pleurotus ostreatus production, composition, fatty acid profile, and lignocellulose biodegradation capacity

“…The mycelium did not completely colonize the substrate S2, which contradicts the findings of Fan et al (2000). The poor mycelial colonization may be explained by the richness of SCG in caffeine (10-25 μmol g −1 ) (Campos-Vega et al, 2015), which was reported to inhibit mycelial growth (Carrasco-Cabrera et al, 2019). It could be due as well to the very low C/N ratio of S2, not suitable for the species requirements.…”

“…Pleurotus mushrooms rank second in the total global mushroom production (Royse, 2014). In commercial production, they are important the because of their gastronomic qualities and nutritional value (Carrasco-Cabrera et al, 2019). Pleurotus ostreatus is particularly treasured because of its carbohydrates, vitamins, and minerals contents (Cheung, 2010).…”

“…Otherwise, coffee wastes generated by the coffee industry are rich in organic compounds (Campos-Vega et al, 2015), and have been recently considered for P. ostreatus production (Carrasco-Cabrera et al, 2019). Studies reported the mushroom growth on coffee husks (Da Luz et al, 2012), coffee pulp (García et al, 2011), and spent coffee grounds (SCG) (Fan et al, 2000).…”

“…Studies reported the mushroom growth on coffee husks (Da Luz et al, 2012), coffee pulp (García et al, 2011), and spent coffee grounds (SCG) (Fan et al, 2000). According to Fan et al (2000) the use of SCG without any pretreatment in the production of P. ostreatus is economically feasible, while Carrasco-Cabrera et al (2019) noted that increasing proportions of SCG in SCG/sawdust substrates has delayed or prevented fruiting. Furthermore, the effect of SCG used in SCG/wheat straw substrates on the mushroom production and the nutritional value is not yet described.…”

Antioxidant and Immunostimulatory Activities of a Submerged Culture of Cordyceps sinensis Using Spent Coffee

“…Similarly, fermentation was performed using various mushroom mycelia to increase the SCG solubility. Pleurotus ostreatus was reported to decrease in caffeine during cultivation [29], and when Pleurotus eryngii was cultured with SCG [30], an increase in mycelium mass was reported. ; however, this was the first attempt made to use coffee grounds for the cultivation of C. sinensis.…”