Assertion: lignin | /r/CapableOf | limit the ethanol production
Facets:
value: from biomass
type: OTHER
value: clearly
type: MANNER
Source sentences:
text: While lignin clearly limits the ethanol production from biomass, the unfermented residues of saccharification and fermentation, which contain high levels of lignin, can be reused for thermochemical energy conversion, especially direct combustion, to produce heat and electricity .