Fermentation of the fiber fraction of the corn kernel can
increase ethanol yield from a bushel of corn by 10% and
subsequently yield a higher-value and higher-protein feed
coproduct than is typically recovered in corn gluten feed
and DDGS (Gulati et al. 1996). Expanding fuel ethanol
production beyond 10% of our liquid transportation needs
will require developing a lower cost feedstock and only
feedstocks containing lignocellulosics are available in
sufficient quantities to substitute for starch as an ethanol
source.