Lignocellulosic biomass is a prospective renewable resource to
produce biofuels and value-added products. Perennial herbaceous
energy crops such as Miscanthus and Pennisetum purpureum have
many advantages to exploit them as a feedstock such as its high
solar energy conversion and water use efficiency, high raw material
yield, high adaptability and strong resilience, high cellulose
content and environmentally friendly (McKendry, 2002;
McLaughlin et al., 2002). Both the US and EU have supported
research on herbaceous energy crops since the mid-1980s,
especially switchgrass is considered as the most promising and a
model bioenergy crop.
However, taking cellulosic ethanol bio-finery process for example,
the native lignocellulosic biomass has limited its accessibility