Effects of NH4Cl and MgCl2 on pretreatment and xylan hydrolysis of miscanthus straw

► This is focused on the xylan hydrolysis of miscanthus straw using NH4Cl and MgCl2. ► Increasing pretreatment temperature increased enzymatic digestibility and xylan removal. ► With pretreatment time, the enzymatic digestibility was increased. ► Pretreatment by 2% NH4Cl or MgCl2 at 185 for 15 min completely hydrolyzes xylan. ► Surface area was damaged and exposed the internal structure by pretreatment.