expanded upon this work and investigated the production of ethanol from CGT,
based on feedstock origin, composition and steam explosion severity.
They found that CGT composition varied considerably between locations and storage regimes, and that harsher pretreatment conditions (severity) tended to create more inhibitory compounds, resulting in low ethanol yields (120 L/t).
Besides steam explosion, the only other notable study on alternative pretreatment approaches for CGT was investigated by Plácido and co-workers (2013).
They reported that although a combination of ultrasonication, liquid hot water and ligninolytic enzymes were comparatively effective in modifying the structure and composition of CGT, the ensuing sugar (25%) and ethanol yields were relatively modest.