a shows the amounts of BC production from various carbon
sources. After 7 days incubation, the production of the BC was
confirmed from three media. However, more BC cultured in media
Zhou (Z) and Hestrin-Schramm (H) was produced, respectively.
Moreover, it was confirmed that G. xylinus could not produce BC
in the medium consisting of Yamanaka (Y). The nitrogen sources
such as yeast extract and pepton were indispensable for the cell