Abstract
Changes in the distribution of low molecular weight carbohydrates, polysaccarides, and organic acids in the vegetative mycelia of Agrocybe cyklindracea (Fr.) Maire (yanagimatsu- take mushroom) were studied through the vegetative growth. The low molecular weight carbohydrate content was in the range of 1.1-11.6% in dry materials. In the vegetative mycelia, trehalose, mannitol, glucose, fructose, myo-inositol, arabitol and glycerol were identified, and trehalose was found to be major among them. It was supposed that trehalose might act as a major respiratory substrate. The polysaccharide content was in the range of 47.8-55.5% in dry materials. Glycogen accumulated in the vegetative mycelia was thought to be served as a reserve carbohydrate. The organic acid content was in the range of 0.6-3.3% in dry materials, and ten organic acids were detected. Malic, citric, pyroglutamic and fumaric acids were found to be predominant.
