Table 1: Current and power density and microbial fuel cell.

Substrate	Vmin. (V)	Vmax. (V)	DPmin. (µW/cm2)	DPmax. (µW/cm2)	DCmin. (µA/cm2)	DCmax. (µA/cm2)
Tomato	0.74 ± 0.02	0.98 ± 0.05	290 ± 27	509 ± 72	393 ± 26	520 ± 47
Onion	0.78 ± 0.01	1.01 ± 0.02	323 ± 21	541 ± 43	414 ± 22	536 ± 32
Potato	0.80 ± 0.02	0.89 ± 0.02	339 ± 31	420 ± 36	424 ± 28	472 ± 30