Fig. 3From: Release of cell wall phenolic esters during hydrothermal pretreatment of rice husk and rice strawHPLC chromatogram of phenolic compounds in RS pretreatment liquor produced at a severity of 5.15. a Direct injection of liquor showing the presence of only pCald, p-OH-Bzald and vanillin; b HPLC of moieties recovered by liquid–liquid extraction after saponification (showing a wide range of identified phenolics)Back to article page