Fig. 2From: Use of agro-industrial residue from the canned pineapple industry for polyhydroxybutyrate production by Cupriavidus necator strain A-04Effects of types and concentrations of alkaline pretreatments on the hydrolysis of a pineapple peel and b pineapple core. Open bars, Ca2OH; solid bars, NaOH. The error bars represent the standard deviations (n = 3). An asterisk indicates a significant difference (P < 0.05)Back to article page