| abstract |
The present invention describes a process for producing solutions of sugars and alcohols from lignocellulosic biomass comprising a pretreatment, a step of enzymatic hydrolysis and alcoholic fermentation, a step of extracting the product alcohol, a step of separation of the solid residue, optionally a washing and drying step, followed by a step of cooking the solid residue in a medium comprising at least one hydrated inorganic salt of formula MXn.n'H2O, in which M is a metal selected from groups 1 to 13 of the Periodic Table, X is an anion and n is an integer between 1 and 6 and n 'is between 0.5 and 12, making it possible to obtain a solid fraction and a liquid fraction, said The solid fraction is subsequently separated and subjected to either an enzymatic hydrolysis step, or enzymatic hydrolysis and alcoholic fermentation steps. |