Isolation, characterization, and application of biosurfactant by Klebsiella pneumoniae strain IVN51 isolated from hydrocarbon-polluted soil in Ogoniland, Nigeria

Bioresources and Bioprocessing

Table 2 Comparison of screening characteristics of isolate IVN-51 with other biosurfactant-producing bacterial isolates

Isolate codes	Source of sample	Lipase test (mm)	Emulsification assay (@400 nm)	Emulsification index (E ₂₄) %	Tilting glass slide test	Haemolytic assay (mm)	Oil-spreading test (mm²)^a
IVN-02	HPS	13.0 ± 2.0	0.5045 ± 0.0025	11.1 ± 2.1	+	3.0 ± 2.0	28.3 ± 0.79
IVN-45	HPS	8.0 ± 2.0	0.5085 ± 0.0015	40.0 ± 1.0	+	12.0 ± 2.0	19.6 ± 0.78
IVN-51	HPS	11.0 ± 1.0	0.4020 ± 0.002	47.8 ± 1.0	+	6.0 ± 2.0	78.5 ± 0.79
IVN-67	HPS	16.0 ± 2.0	0.3220 ± 0.001	24.0 ± 2.0	+	2.0 ± 0.5	176.6 ± 3.14