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. 2016 Mar 22;9:73. doi: 10.1186/s13068-016-0481-6

Fig. 1.

Fig. 1

a Response surface curve showing the effects of pH and peptone on the CMCase activity of B. subtilis IND19 in SSF using cow dung substrate. b Response surface curve showing the effects of pH and NaH2PO4 on the CMCase activity of B. subtilis IND19 in SSF using cow dung substrate. c Response surface curve showing the effects of peptone and NaH2PO4 on the CMCase activity of B. subtilis IND19 in SSF using cow dung substrate