Fig. 4

The relationship between ozone treatment time and reducing sugar yield after saccharification of the spent culture medium (SCM) treated with ozone. Bars indicate standard deviations. Reducing sugar yield was expressed as equivalent glucose amount, which was obtained by a calibration curve using glucose as a standard. The yield is indicated as glucose amount (g) per 100 g dry SCM. Refer to Fig. 1 for symbols. Dotted line indicates the values of SCM samples with 20 % moisture content