Fig. 4. The concentration of ethanol (h), glucose (j), xylose (N) during fed-batch SSF experiments for corncobs after the H2SO4–NaOH pretreatment. (a) adding every 8 h, (b) adding every 4 h, and (c) adding every 2 h.
Fig. 4. The concentration of ethanol (h), glucose (j), xylose (N) during fed-batchSSF experiments for corncobs after the H2SO4–NaOH pretreatment. (a) adding every8 h, (b) adding every 4 h, and (c) adding every 2 h.