Table 1. Optimization of rice bran concentration and Incubation time.

Bacterial strains	Incubation time (h)	Rice Bran %
		0.5			1.0			1.5			2.0			2.5
		CDM (g/L)	PHA (g/L)	PHA %	CDM (g/L)	PHA (g/L)	PHA %	CDM (g/L)	PHA (g/L)	PHA %	CDM (g/L)	PHA (g/L)	PHA %	CDM (g/L)	PHA (g/L)	PHA %
B. subtilis	24	3.8	1.7	44.7	11.0	1.4	12.7	5.5	1.9	12.3	11.2	1.0	8.9	9.3	1.4	15
	48	2.9	2.0	69	7.0	0.5	7.1	3.2	1.1	8.3	11.9	1.1	9.2	14.7	1.3	8.8
	72	2.6	0.7	26.9	2.5	0.002	8	6.4	1.6	9.7	11.4	0.5	4.4	10.0	0.5	5
	96	1.6	0.5	31.3	11.9	0.8	6.7	3.7	1.2	8.8	11.1	0.9	8.1	12.8	0.8	6.3
B. cereus	24	4.5	1.6	35.5	6.3	1.3	20.6	8.7	1.0	11.5	10.1	1.0	9.9	5.6	0.6	10.7
	48	6.7	0.6	8.9	4.8	1.1	23	9.3	0.7	7.5	13.0	0.9	6.9	8.9	1.2	13.5
	72	7.6	0.4	5.2	9.8	0.8	8.2	4.6	0.8	5.5	19.8	2.1	10.6	8.5	1.5	17.7
	96	4.6	1.1	23.9	11.0	2.2	20	11.5	2.2	19.1	16.6	2.5	15	11.4	1.6	14
Alcaligenes	24	2.0	0.9	45	3.8	1.3	34.2	6.4	1.5	23.4	7.0	1.1	15.7	4.9	1.6	32.6
	48	2.4	1.7	70.8	3.7	1.7	45.9	4.8	3.3	68.7	6.4	2.0	31.2	6.5	2.1	32.3
	72	3.1	2.7	87.1	5.0	3.2	64	6.4	3.0	46.8	14.5	3.3	22.7	7.3	3.4	46.5
	96	2.6	0.3	11.5	4.1	0.8	19.5	6.0	0.2	3.3	8.9	1.0	11.2	8.6	1.0	11.6
	120	3.3	0.4	12.1	6.5	0.7	10.8	9.8	0.9	9.2	10.0	0.9	9	10.6	1.8	16.9
P. aeruginosa	24	2.9	1.0	34.4	2.6	1.1	42.3	5.1	1.2	23.5	5.3	1.1	20.7	6.9	1.1	15.9
	48	2.5	1.9	76	3.9	2.9	74.3	4.3	1.7	39.5	5.4	1.0	18.5	15.5	2.9	18.7
	72	3.2	3.0	93.7	5.2	2.6	50	4.6	3.8	82.6	21.7	3.4	15.6	10.0	3.0	30
	96	1.9	0.5	26.3	3.7	0.6	16.2	3.9	0.8	20.5	9.1	1.1	12	6.7	0.7	10.4
	120	2.7	0.5	18.5	6.1	0.6	9.8	7.3	0.1	1.4	7.9	0.5	6.3	8.7	0.8	9.2