Proximate, minerals and taste components analyis of Maitake [Glifora frondosa] mushroom

Abstract

With samples of Grifora frondosa from different growth conditions, the eftst of these differenrt growth conditions was examined.Twenty-four wild samples of Grifora frondosa 16 grayish samples and 8 whitish samples, 12 samples cultivated on wood and 17 samples grown in a sawdust medium bed were tested.The analyzed components were the compositions, minerals, free amino acids, nucleotides.free suger, sugar alcohol and organic acids related to flavor.
Among the proximate compositions, the contents of ask and protein from Grifora frondosa cultivated on the sawdust medium bed were signficantly higher than those of the wild and wood grown samples.
Among the minerals, the contents of K, P and Mg of the samples grown on the medium bed were significantly higher than those of the wild and wood grown samples. The conten of Na, on the contrary, was significantly higher in the wild and wood grown samples than that of the medium bed grown samples.
The 5-nucleotide content increased by heating.The degrees of the increases were significantly higher in the medium bed grown samples than those of the wild and wood grown samples.However, the extent of the increase was less than that of Lentites edodes.
Regading the free amino acids, the contents of the wild and wood grown samples were significantly higher than those of the medium bed grown samples.The major amino acids were ornitine, glutamic acid, glutamine and alanine.
The major free suger and sugar alcohol were trehalose, followed by glucose, and they were signficantly higher in the wild and wood grown samples than those of the medium bed grown samples.In the wild samples, the grayish contained trehalose that was significantly higher than in the whitish, but the content of glucose and mannitol were significantly higher in the whitish than in the grayish ones.
Regarding organic acids, the highest content was malic acid, followed by succinic acid, and the in contents in the wild were significantly higher than in the medium bed grown samples.