Simultaneous saccharification and fermentation of pretreated cashew apple bagasse (CAB-oH) we Fe conducted in 250 mL flasks (reaction volume of 100 mL) with different solid loading (CAB-OH) in 50 mM citrate buffer at pH 4.5-5.0, supplemented with 1 g/L yeast extract and 1 g/L (NH4)2So4 at 40 oC and 150 rpm 1301. The culture media was sterilized at 110 oC for 10 min. The saccharification of CAB-OH was carried out by adding 30 FPU/g ellulos of the cellulase complex and 60 CBU/gcellulose of cellobiase, and the experiments were started by adding the cell suspension in the concentration of 5 g/L. The solid loadings investigated were 7.5% and 15% whv CAB-oH, corresponding to 5.6% and 11.2% of glucan from CAB-OH Aiming increasing conversion, a prehydrolysis step was carried out by liquefying lignocellulosic biomass at 40 oC for 12 h, and then K marxianus ATCC36907 was added under sterile conditions. Pre- hydrolysis was conducted using 7 and 15% w/v CAB-oH of solid loading, as well as 10K (7.5% w/v of glucan from CAB-oH) and 20% w/v CAB-OH (15% w/v of glucan from CAB-oH) In all experiments,