Fig. 1From: Oxygen-radical pretreatment promotes cellulose degradation by cellulolytic enzymesSchematic diagram of sample preparation for oxygen-radical pretreatment. Radical-pretreatment conditions (i.e., mixed gas with 0.6% of O2 in argon; treatment distance of 10 mm with a plastic cover) were optimized to obtain maximal atomic oxygen [O (3 P j )]Back to article page