Electron transfer studies of redox probes in bovine milk

► Milk has nearly 150 mM of electro-active species. ► It has been demonstrated as an electrolytic medium without any supporting electrolyte. ► Found to sustain redox reactions in the absence of a supporting electrolyte. ► Cyclic voltammetry and impedance studies reveal the role of milk components in redox reactions. ► Electrochemical techniques can be used as potent tools for milk quality analysis.