This article looks at how hydrothermal treatment can change wood to make it easier to turn into bioenergy. The researchers studied how this treatment breaks down lignin and hemicellulose in plant cells, making cellulose more accessible. They found that hydrothermal pretreatment helps to break down the tough structure of the plant cell wall, making it easier to extract useful materials for energy production. The detailed changes during this treatment are seen in cellulose, hemicellulose, and lignin, which are the key components of wood. This research helps us understand how to improve the process of turning wood into bioenergy for a more sustainable future.