Liquid chromatography analysis on the products from supercritical alcoholysis of cornstalk

The main alcoholysis products of cornstalk under supercritical conditions was analyzed primarily by liquid chromatograph(HPLC).The results showed that there were many compounds among the products,which exhibited higher polarities than phenol,and there were many monocyclic aromatic hydrocarbons in it.And dual wavelength determination was suitable with HPLC: the wave number was respectively 220 and 210 nm before and after 30 min.The differences of ultraviolet chromatograms between direct analysis and analysis after solvent volatilization showed that there were possibly some small volatile molecular substances loss in the course of solvent volatilization.The product could be analyzed by HPLC,but the intensive analysis needs more advanced and more effective analysis technics to discover the products and to study the mechanism of depolymerization of cornstalk biomass.