In Brazil, large amounts of agro-industrial residues are produced,
including coffee husks, as Brazil is the top coffee producer
in the world (2800 million tonnes per year); coffee husks and
peels comprise 50% of the grain (CONAB, 2010). This lignocellulolytic
residue has been used as substrate in mushroom production
(Dias et al., 2003). It is important to point out that the use of these
residues in the production of mushrooms prevents their direct release
into the environment, increases the producer’s income and
leads to food product with high nutritional quality.