About 80 g kg-1 NaOH on a DM basis was mixed with the rice straw (1.0 mm screen, about 92% DM) for 48 h
Some samples were autoclaved (120°C for 120 min) and then oven-dried at 55°C
Also 20 g kg-1 DM exogenous enzyme used for processing rice straw and autoclaved rice straw.