Fig. 1From: Polyphenolic compounds as electron shuttles for sustainable energy utilizationa Cyclic voltammetry of Vitamin B2 for 100 scan cycles, clearly indicating the persistence of two stable redox potential peaks of electron shuttle [10]. b Cyclic voltammogram of vitamin C (1000 mg/L) in PBS solution at scan rate 10 mV/s, indicating only one redox potential peak of antioxidant [10]Back to article page