Absorption of Calcium and Magnesium by the Fruiting Body of the Cultivated Mushroom Hypsizigus marmoreus (Peck) Bigelow from Sawdust Culture Media

ABSTRACT: Hypsizigus marmoreus was cultivated in potato‐sucrose‐agar (PSA) and in sawdust media supplemented with Ca or Mg salts. The radial growth of mycelia was determined. The mushroom spawn did not grow on PSA supplemented with Ca carbonate, Mg carbonate, or Mg hydroxide. However, the mycelia grew well on sawdust media supplemented with Ca phosphate, Ca carbonate, or Mg sulfate. Ca of the fruiting body was increased 4.0 to 5.6 times by 1% to 5% of Ca phosphate or Ca carbonate. Mg was increased 1.4 times by 0.5% of Mg sulfate or Mg chloride.