Table 1.

Emulsifying activity of biosurfactant, synthetic surfactants, and bioemulsifiers on various hydrophobic substrates after 168 h of incubation at 30 °C

Hydrophobic substrate	Emulsifying activity of Biosurfactant	Emulsifying activity of Synthetic surfactants		Emulsifying activity of Biopolymers
		Tween 20	Triton X-100	Gum arabic	Xanthan gum
Xylene	74 ± 0.91	94 ± 0.72	95 ± 0.96	78 ± 1.16	78 ± 1.19
Benzene	67 ± 1.42	94 ± 0.97	68 ± 0.70	82 ± 2.13	72 ± 1.35
Toluene	71 ± 0.97	82 ± 0.24	81 ± 1.93	70 ± 1.85	70 ± 3
Diesel	76 ± 1.23	73 ± 0.37	68 ± 2	89 ± 0.48	89 ± 1.2
Petrol	78 ± 0.78	68 ± 2.2	72 ± 0.67	88 ± 0.84	87 ± 3
Kerosene	67 ± 0.82	67 ± 1.46	69 ± 0.25	78 ± 0.87	75 ± 0.89
Motor oil	81 ± 0.94	69 ± 1.32	67 ± 0.49	93 ± 0.71	91 ± 0.75
Olive oil	73 ± 2.05	100	100	99 ± 0.49	83 ± 0.84
Sunflower oil	76 ± 0.89	100	98 ± 0.82	98 ± 0.2	86 ± 0.41