PRODUCTION OF CULTURE MEDIUM CONTAINING COFFEE EXTRACT RESIDUE AS MAIN RAW MATERIAL AND USED FOR EDIBLE MUSHROOM

摘要

PROBLEM TO BE SOLVED: To produce the subject culture medium retaining sufficient air permeability in a large amount without generating heating irregularity by heating and kneading culture raw materials containing coffee extract residues and substances as nutritive sources for mushrooms in specific amounts, respectively, and having a water content of a specified value or larger in specific conditions. SOLUTION: This method for producing a culture medium comprises heating and kneading culture raw materials containing 60-97% of coffee extract residues and 3-25% of substances as nutritive sources for the mushrooms and having a water content of =60% by the use of an extruder at a culture medium temperature of 60-90 deg.C for =60 sec. The edible mushroom includes the genus Pleurotus mushroom as the most hopeful mushroom.