Figure 2From: High titer and yield ethanol production from undetoxified whole slurry of Douglas-fir forest residue using pH profiling in SPORL Effects of acid injection delay time t i in pretreating a Douglas-fir forest residue on resultant substrate enzymatic digestibility (SED), enzymatic hydrolysis glucose yield (EHGY), HMF, furfural, and acetic acid formation. Back to article page