Photoproduction of Hydrogen under Different Cultural Conditions by Alginate Immobilized Rhodopsedomonas palustris KU003

Table 3

Effect of carbon sources on hydrogen production (mL/15 mL vessel) by immobilized cells of Rps. palustris in anaerobic dark.

Carbon source			Incubation period (in hrs)
	24	48	72	96	120	144	166	192
Fructose	—	—	0.22 ± 0.22	0.44 ± 0.10	0.78 ± 0.18	1.12 ± 0.08	0.86 ± 0.24	0.56 ± 0.18
Glucose	—	—	—	0.34 ± 0.04	0.56 ± 0.12	0.84 ± 0.28	0.48 ± 0.14	0.26 ± 0.08
Maltose	—	—	0.36 ± 0.08	0.56 ± 0.06	0.96 ± 0.10	1.54 ± 0.28	1.12 ± 0.38	0.78 ± 0.22
Sucrose	—	—	0.28± 0.06	0.68 ± 0.16	1.18 ± 0.16	1.62 ± 0.38	0.78 ± 0.24	0.38 ± 0.22
Mannitol	—	0.22 ± 0.02	0.46 ± 0.08	0.78 ± 0.12	0.98 ± 0.32	1.12 ± 0.46	0.84 ± 0.18	0.46 ± 0.06
Lactate	—	—	0.36 ± 0.02	0.66 ± 0.18	1.10 ± 0.44	1.78 ± 0.10	1.38 ± 0.14	0.96 ± 0.12
Malate	—	0.38 ± 0.04	0.66 ± 0.02	1.28 ± 0.14	1.76 ± 0.42	2.12 ± 0.34	1.54 ± 0.10	0.78 ± 0.14
Succinate	—	—	0.38 ± 0.18	0.56 ± 0.12	0.98 ± 0.06	1.48 ± 0.22	0.78 ± 0.18	0.44 ± 0.12
Lactose	—	0.24 ± 0.06	0.46 ± 0.08	0.64 ± 0.16	0.94 ± 0.20	1.92 ± 0.14	1.34 ± 0.18	0.96 ± 0.38
Sorbitol	—	0.44 ± 0.06	0.68 ± 0.02	0.74 ± 0.10	0.94 ± 0.12	1.24 ± 0.14	0.64 ± 0.14	0.32 ± 0.28

—No hydrogen.