1993 Volume 40 Issue 11 Pages 771-775
Thirty-seven samples of SHIITAKE mushroom [Lentinus edodes (Berk.) SING.] cultivated on logs and 19 samples of the mushroom cultivated on sawdust substrate beds paired with their substrate beds, which were all of unambiguous origins, were obtained. Comparisons of proximate and mineral compositions of the mushroom groups were conducted. Effects of the sawdust substrate composition on the mushroom composition were also examined. The contents of carbohydrate, Ca, Cu, Mn and Hg were significantly high in the mushroom cultivated on logs than that in the mushroom on sawdust substrate beds. On the contrary, the contents of moisture, protein, ash, K, P and Zn were high in the mushrooms cultivated on sawdust substrates. Nitrogen content of fruiting bodies cultivated on sawdust substrate was closely related to the content of the substrate. This fact well explained the difference in nitrogen contents between mushrooms cultivated on logs or sawdust substrates. Concentra- tions of elements to fruiting bodies From the sub trate beds were found in K (3.15 times), Na (1.68times), P (1.21 times) and Cd (11.58 times) but significant corelation between them was only found in P. Ca and Fe were not concentrated in fruiting bodies from the substrates, however, significant relations between fruiting bodies and substrates were observed.
