Absorption of Calcium from Calcium Salts Added Culture Media by Hiratake (Pleurotus ostreatus (Fr.) Quél) and Nameko (Pholiota nameko J. Ito)

Abstract

Pleurotus ostreatus and Pholiota nameko were cultivated in calcium added media. We traced the changes of the course of stages of mycelial growth of these mushroom in PSA and sawdust media which added the calcium compounds in concentrations of 1, 5 and 10%. The calcium content in the fruit-bodies of these mushrooms after harvesting was determined. The results were as follows: 1 Both mycelial growth and absorption of calcium for these mushroom were affected by the amounts added, the initial pH value of the medium and the type of compound used. 2 When compared among the calcium phosphate, sulfate, carbonate and acetate, the calcium carbonate showed the best mycelial growth for P. ostreatus in the PSA and the sawdust media. The amount of calcium in fruit-bodies in sawdust medium increased about 1.4 times, as compared with that in an untreated culture medium. 2 Calcium phosphate was most effective for promoting P. nameko mycelial growth in a PSA and sawdust medium. The amount of calcium in fruit-bodies cultivated in a sawdust medium was 2.3 times greater than that cultivated in an untreated culture medium. © 1995, Japanese Society for Food Science and Technology. All rights reserved.