The researchers looked at how removing hemicellulose from plant material affects how the material flows. Hemicellulose is one of the components of the material. They found that as the hemicellulose amount decreased, the material became easier to flow. This shows that hemicellulose plays a role in how well the material can move. The study found that reducing hemicellulose in switchgrass led to lower friction when the material was loose. These changes were not due to the shape of the particles. The findings suggest that hemicellulose content affects how well biomass material moves, which is important for using plant material as an energy source.