Fig. 4

HPLC spectra of representative SESC slurry supernatants from the first and second milling and saccharification stages. The standard furfural and hydroxyl methyl furfural (HMF) concentrations are both 10âmgâLââ1, which is 50 times lower than their inhibition concentrations for alcohol fermentation. Note the absence of furfural and HMF peaks in both SESC samples