Found a Satan’s Bolete (Rubroboletus pulcherrimus) and had to demonstrate the strong blueing reaction when the flesh is bruised. This is a toxic Bolete that contains peptides that can inhibit protein synthesis and cause a myriad of health problems, avoid eating blue staining boletes with red pores. The blueing reaction is not due to “active” alkaloids but is instead due to enzymatic oxidation of organic acids (like variegatic acid). Happy Halloween! #satansbolete #bluestaining #bolete #chemistry