Characterization of Exopolysaccharide Produced by Streptococcus thermophilus CC30

Table 1

Emulsifying activity (EA) of extracellular polysaccharide with different concentrations under different vegetable oils and hydrocarbons.

Hydrocarbon/oil	EPS mg/mL	% EA	Emulsifying index
			Petrol	0.5		61.1 ± 2.6	65.48 ± 3.5	65.48 ± 3.5
1	54.95 ± 2.4	56.89 ± 2.4		69.33 ± 3.7	64.17 ± 1.7
1.5	54.95 ± 2.5	61.1 ± 2.6		60.71 ± 5.0	65.47 ± 1.6
Diesel	0.5	48.48 ± 4.2	54.68 ± 2.2	54.54 ± 0	59.43 ± 2.6
	1	48.48 ± 4.3	53.02 ± 2.1	54.54 ± 1	56.3 ± 2.4
	1.5	62.11 ± 2.1	54.68 ± 2.2	49.24 ± 1.0	46.91 ± 2.0
Kerosene	0.5	53.12 ± 4.4	54.83 ± 0	53.12 ± 0	53.97 ± 1.2
	1	53.12 ± 4.4	51.61 ± 0	53.12 ± 0	54.83 ± 0
	1.5	53.12 ± 4.4	48.48 ± 0	52.41 ± 3.4	51.47 ± 2.0
Coconut oil	0.5	21.66 ± 2.3	31.58 ± 0.7	34.99 ± 2.3	34.99 ± 2.3
	1	24.24 ± 0	40.6 ± 0	37.87 ± 6.4	43.08 ± 0.9
	1.5	31.81 ± 2.1	56.3 ± 2.4	50.9 ± 3.4	46.96 ± 2.1
Palm oil	0.5	51.66 ± 2.3	55.17 ± 0	53.39 ± 2.5	56.15 ± 1.3
	1	51.66 ± 2.3	55.17 ± 0	49.99 ± 4.7	49.99 ± 4.7
	1.5	54.99 ± 2.3	52.47 ± 1.2	56.72 ± 2.6	56.72 ± 2.6
Sunflower oil	0.5	58.16 ± 0.1	56.66 ± 0	53.33 ± 4.7	53.33 ± 4.7
	1	58.06 ± 0	56.66 ± 0	56.3 ± 2.4	56.3 ± 2.4
	1.5	50.80 ± 1.1	53.12 ± 0	51.56 ± 2.2	51.56 ± 2.2
Xylene	0.5	56.44 ± 2.2	56.44 ± 2.2	47.72 ± 3.2	46.91 ± 2.0
	1	62.35 ± 0.2	53.22 ± 2.2	50.8 ± 1.1	50.08 ± 1.1
	1.5	47.62 ± 1.0	49.99 ± 2.2	51.60 ± 4.5	49.19 ± 1.1

Values are mean ± standard deviation (). Subscript indicates hours of incubation with solvent/oil.