Fig. 7From: Evaluating polymer interplay after hot water pretreatment to investigate maize stem internode recalcitrancePearson’s correlation coefficients between variations in physico-chemical factors and hydrolysis yield after 72 h. The red squares correspond to negative correlations and the blue squares to positive correlations. Values in bold are significant with a p values ≤ 0.05 and * have a p values ≤ 0.01Back to article page