Egg shell powder: an inexpensive material for detoxification of sugarcane bagasse acid hydrolysate, cells immobilization agent and nutritional supplement for ethanol and xylitol production

) of 0.09 and 0.31 g/L·h, respectively were achieved. Furthermore, eggshell proved to be successful to decrease concentrations of inhibitors molecules present in hemicellulosic hydrolysate derived from sugarcane bagasse in more than 90% of 5-HMF and furfural, besides of partial removal of other compounds such as syringaldehyde and ferulic acid. These results demonstrate the feasibility of using eggshell powder as a multifunctional additive, offering an environmentally friendly and cost-effective approach to improve the overall performance of 2 G ethanol and xylitol bioproduction.