Table 2.

Growth (colony-forming units/ml) of C. acetobutylicum and C. beijerinckii on milk dust powder based medium

Time (h)	GlucoseC. acetobutylicumATCC 824 cfu/ml	Milk dustC. acetobutylicumATCC 824 cfu/ml	GlucoseC. beijerinckiiNCIMB 8052 cfu/ml	Milk dustC. beijerinckiiNCIMB 8052 cfu/ml
0	2.86 × 107	1.87 × 107	5.1 × 107	1.17 × 107
12	8.06 × 109	3.1 × 108	2.0 × 109	1.27 × 108
24	4.46 × 1010	4.0 × 109	3.3 × 109	4.67 × 108
36	1.39 × 1011	7.67 × 109	1.1 × 1010	3.67 × 109
48	8.3 × 1010	1.03 × 109	8.6 × 109	2.33 × 109
60	6.1 × 1010	1.13 × 109	6 × 109	1.3 × 108
72	6.9 × 109	7.0 × 108	1.2 × 109	1.6 × 108