The
most recent development in the field of processing starchy raw
materials to ethanol is the direct starch to ethanol conversion
using granular starch hydrolyzing enzyme (GSHE). GSHE is
obtained from genetically modified Trichoderma reesei and it shows
the activity of a-amylase and glucoamylase displaying on the surface
of starch granules. Earlier studies shown that the efficiency of
direct starch to ethanol conversion process is comparable to
‘traditional’ technologies [21] and its advantage is lower energy