Table 3.

Utilization of Orange MR as carbon and nitrogen source by DBS 2

Concentration of dye (ppm)	As carbon source	Percentage of decolorization
		Mean ± SD	As nitrogen source	Mean ± SD	t test value	df	Level of significance
100	15.42	15.42 ± 3.6	78	78 ± 1.4	28.0616	4	P < 0.0001
	19.02		79.4
	11.82		76.6
200	11.21	11.21 ± 2.5	85.3	85.3 ± 2.0	40.0828	4	P < 0.0001
	13.71		83.3
	8.71		87.3
300	6.57	6.57 ± 1.5	90	90 ± 1.5	80.1570	4	P < 0.0001
	7.57		91.5
	5.57		88.5