Both D-mannitol and glucose are present in plant matter which impacts G. reessii's ability to digest decaying vegetation.

[2] G. reessii contains enzymes that have diverse capabilities including the abilities to dissolve pectin,[3]and remove phenol.

[5] β-hydroxy β-methylbutyric acid (HMB) produced from Galactomyces reessii, was discovered to be beneficial to people engaging in resistance training.

[3] Galactomyces reesii was studied as a treatment to remove phenolic contamination from palm oil extraction.

In this study, it was found that the enzymes, laccase and manganese peroxidase worked to depolymerize lignin, which is rich in phenol.

This study concluded that this information could be used to make more efficient wastewater treatment systems for the removal of phenol.