Figure 5
From: Comparative study of sulfite pretreatments for robust enzymatic saccharification of corn cob residue
FT-IR spectra of samples. ‘a’ represents the raw material of the corn cob residue, while ‘b’, ‘c’, ‘d’, and ‘e’ represent the corn cob residue treated with sulfite in neutral, acidic, alkaline, and ethanol environments, respectively.