Partial Characterization of Biosurfactant from Lactobacillus pentosus and Comparison with Sodium Dodecyl Sulphate for the Bioremediation of Hydrocarbon Contaminated Soil

Table 2

Correspondence between IR spectra and functional groups detected in the biosurfactant produced by L. pentosus and in biosurfactants produced by other lactic acid bacteria (L. lactis, L. paracasei , and S. thermophilus A and B).

Absorbance band (cm^−1)	Region
3200–3600	OH and NH stretching
2900–2950	C–H (stretching) groups CH2 and CH3
1725, 1675	C=O (stretching)
1520	N–H bending in proteins
1400–1460	C–H bending vibrations of CH3 and CH2 groups; CH (scissor)
1100–1090	OH deformation vibrations/CN
1000–1300	C–O sugar stretching