Mateo et al. [60] studied several methods to detoxify acid hydrolysates of olive pruning residues (liming with NaOH, CaO and Ca(OH)2 and adsorption with activated carbon). When NaOH was used, the decrease in phenolic compounds was minimal (28–31%) for two different alkaline detoxification processes, and a slight reduction in acetic acid (<7%) was achieved, although no significant sugar loss was observed. The calcium-based treatments, though, had a notable effect, removing more lignin-derived compounds (56–71%), acetic acid (about 50%) and total furan content (approximately 70%). However, a high loss of sugar also occurred, making this method unsuitable for pretreatment of olive pruning hydrolysates. As for the use of activated carbon in this hydrolysate, it was shown to be an excellent alternative to reduce inhibitors (46% of acetic acid, 81% of phenolic compounds and 98% of total furans), with the possibility of regenerating the carbon employed to reduce the cost of the process
การแปล กรุณารอสักครู่..
