Fig. 4From: Direct IBE fermentation from mandarin orange wastes by combination of Clostridium cellulovorans and Clostridium beijerinckiia Residual total sugar ratio in the culture medium with C. cellulovorans, where different concentrations of limonene (v/v), 0% (filled circle), 0.01% (×), 0.02% (open triangle), 0.05% (open square), and 0.1% (open circle), was present in the culture medium. b Total sugar concentration at 61 days cultivation. Values are mean ± SE of three independent samplesBack to article page