From:  Integrating coffee parchment into a circular bioeconomy model for sustainable Pleurotus mushroom cultivation

 Color parameters (L*, a*, b*) of fruiting bodies of Pleurotus ostreatus and Pleurotus citrinopileatus cultivated on coffee parchment substrates with different particle sizes.

Particle sizePleurotus speciesL*a*b*
RCPP. ostreatus59.96 ± 4.34 a10.33 ± 2.56 b26.86 ± 3.38 b
MCPP. ostreatus41.40 ± 2.53 d14.00 ± 1.30 a25.06 ± 0.96 b
FCPP. ostreatus49.96 ± 4.63 c9.00 ± 2.87 c24.00 ± 2.77 c
RCPP. citrinopileatus57.50 ± 4.00 b11.80 ± 2.20 b28.50 ± 3.00 a
MCPP. citrinopileatus39.80 ± 2.80 d15.50 ± 1.50 a26.00 ± 1.00 b
FCPP. citrinopileatus47.20 ± 4.50 d10.50 ± 2.70 b25.20 ± 2.50 b

RCP: raw coffee parchment; MCP: medium coffee parchment; FCP: fine coffee parchment. Values are mean ± SD from three replicates. Values in a column with different superscript letters are significantly different (p < 0.05) at 5% level of significance using Duncan’s multiple-range test. Repeated superscript letters indicate that the means were not significantly different (p > 0.05). SD: standard deviation.