1993 Volume 40 Issue 1 Pages 7-16
The effect of ozone exposure (concentration: 0, 0.03, 0.1 and 0.3ppm) during cultivation of Nameko mushroom (Pholiota nameko) was investigated on the weight and chemical composition (water, protein, lipid, carbohydrate and ash as major constituents; Ca, Fe, Na, K and Zn as minerals; and thiamin, riboflavin and ascorbic acid as vitamins) on the dry matter basis of fruit bodies i.e., pileus, stipe and whole. As to the ozone treatment, a significant increase was observed in the water, lipid, carbohydrate, thiamin and ascorbic acid contents in pileus, in the water, ascorbic acid contents in stipe and in the water, lipid and ascorbic acid contents in whole. On the other hand, a significant decrease was observed in weight and protein, ash, Fe, Na, K and Zn contents in pileus, in weight and ash, K and Zn contents in stipe and in weight and ash, Na, K and Zn contents in whole. The pileus, as compared with the stipe, had higher amounts of major constituents except carbohydrate and also higher Fe, Na, Zn, thiamin and riboflavin contents on 0ppm ozone culture (control).
