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January 12, 2016

Solubilization of washed mid-season switchgrass by various biocatalysts.

Optimizing Biocatalyst-Feedstock Combinations to Achieve High Solubilization with Minimal Pretreatment
This study carried out the most comprehensive controlled comparison to date of lignocellulosic solubilization by various biocatalysts, and report initial exploration of enhancing microbial solubilization of cellulosic biomass via mechanical disruption (cotreatment). Trends drawn from time-course and end-point data for six conversion systems and three substrates were: greater-than-expected differences in the effectiveness of various biocatalysts; lower yields and greater dependence on particle size for Populus as compared to green or senescent switchgrass; equal fractional solubilization of glucan and xylan with no biological solubilization of the non-carbohydrate fraction of biomass; and two-fold increase in solubilization via mechanical disruption with greater benefits on partially-fermented feedstock.

BioEnergy Science Center one of three DOE Bioenergy Research Centers established by the U.S. Department of Energy.