Biosynthesis of ergothioneine: current state, achievements, and perspectives Applied Microbiology and Biotechnology Springer Nature Link In a study, researchers found that mushrooms have high amounts of the ergothioneine and glutathione, both important antioxidants, said the senior author. The researchers also found that the amounts the two compounds Potential role of ergothioneine rich mushroom as anti aging candidate through elimination of neuronal senescent cells ScienceDirect Ergothioneine: an antioxidant with high potential