Ionic Liquid 1-Ethyl-3-Methylpyridinium Diethyl Phosphate Pretreatment of Mulberry Residue

The IL 1-ethyl-3-methylpyridinium diethyl phosphate ([EPyM][EMP]) and 1-ethyl-3-methylimidazolium acetate ([EMIM]OAc) were compared in view of thier superority in pretreatment toward accelerating enzymatic hydrolysis of cellulosic biomass, and they could be recyclable. Efficient ionic liquid pretreatments of cellulose can be obtained with short duration times (20 min) at 50-120 °C with [EPyM][EMP] and [EMIM]OAc. And [EPyM][EMP] showed preferable cellulosic biomass pretreatment capability. The short time and mild temperature of cellulose solubilization allowed a in situ processing of [EPyM][EMP] IL-pretreatment and saccharification.