Fig. 5From: Novel optimization strategy for tannase production through a modified solid-state fermentation systemOptimization of carbon and nitrogen sources content by RSM using Box–Behnken design. a Interaction of tannin and glucose. b Interaction of tannin and (NH4)2SO4. c Interaction of tannin and yeast extract. d Interaction of glucose and (NH4)2SO4. e Interaction of glucose and yeast extract. f Interaction of (NH4)2SO4 and yeast extractBack to article page