Download RAW file:
Switchgrass (Panicum virgatum) has been identified as a high-potential energy crop. It is a warm-season perennial grass with an impressive prospect due to its established characteristics including high biomass yield and relatively low cost of production. Similar to other lignocellulosic biomass, pretreatment of switchgrasss is a critical step required for optimum production of cellulosic ethanol. A variety of pretreatment strategies have been applied for modifying switchgrass prior to enzymatic hydrolysis for improved ethanol production, but only microbial pretreatment approach seems to be more promising owing to its associated low cost, minimal environmental pollution and low severity. However, large scale application of this pretreatment approach is still in its infancy because of the relatively long pretreatment time, fermentable sugar loss and inability of the microbes to selectively degrade lignin. To overcome these drawbacks, intensive studies on the genomes of lignin-degrading microorganisms and optimization of microbial pretreatment of switchgrass is imperative. This review provides an overview of the viability of switchgrass as feedstock for cellulosic ethanol, current status of microbial pretreatment, factors enhancing microbial pretreatment of lignocellulosic biomass, as well as research gaps on microbial pretreatment strategy
Switchgrass, microbial pretreatment, cellulosic ethanol, lignocellulosic biomass, enzymatic hydrolysis
CSBE/SCGAB 2019 Annual Conference, Vancouver, BC, 14-17 July 2019.
Bioenergy and Bioproducts 2
Canadian Society for Bioengineering