Table 2.

Percentages of oil recovered with the biosurfactant produced by B. subtilis #309 in the medium containing 5% sunflower cake or rapeseed cake.

Raw Material	Time (h)	Oil Recovered (%)
Sunflower cake	0	0.8 ± 0.2
	24	14.5 ± 0.6
	48	23.1 ± 1.1
	72	26.8 ± 0.4
	96	30.4 ± 0.1
	120	31.6 ± 0.8
	144	31.0 ± 1.1
	168	30.4 ± 1.0
Rapeseed cake	0	1.2 ± 0.3
	24	22.6 ± 1.2
	48	25.2 ± 0.8
	72	27.1 ± 0.2
	96	31.3 ± 0.2
	120	37.1 ± 0.9
	144	36.2 ± 0.4
	168	33.1 ± 1.2