Sample Percentage residual of paraffins after bio-treatment
  C9-20   C21-30   C31-39   Total area paraffins   Total area sample   (%)paraffins   (%) UCM
Control crude oil 78.20 17.6 4.2 3477.34 2.27×104 15.32 84.68

B. lichenformis(B.l.)

Crude oil + B.l. 18.04 74.47 7.49 9.54×104 4.14×105 23.04 76.96
Crude oil+B. l.+biosurf.(1) 22.74 68.19 9.07 6.24×104 2.94×105 21.22 78.78
Crude oil +B. l +CPVAF 30.61 68.72 0.67 6597 .87 1.87×104 35.28 64.72
Crude oil+B. l +  CPVA 81.67 16.37 1.96 1871.78 5829.88 32.11 67.89

Rhodococcuserythropolis(R.e.)

Crude oil + R.e. 62.26 36.66 1.08 2388.68 2.013 × 104 11.87 88.13
Crude oil+R.e.+biosurf.(2) 31.35 51.06 17.59 7.79 × 104 4.09 × 105 19.05 80.95
Crude oil+R.e.+CPVAF 0 0 0 0 0 0 0
Crude oil + R.e.+CPVA 20.93 69.67 9.4 4×104 1.85×105 21.62 78.38

Pseudomonas xanthomarina(P.x.)

Crude oil + P.x. 38.42 46.75 14.83 2.26×104 1.9×105 11.89 88.11
Crude oil+P.x.+biosurf.(3) 39.9 50.33 9.77 7.83×104 3.96×105 19.77 80.23
Crude oil+P.x.+ CPVAF 49 48 3 2458.47 1.3×104 18.91 81.9
Crude oil +P.x.+ CPVA 35.98 53.55 10.47 7.62×104 3.63×105 20.99 79.01
Table 3: Distribution of carbon number in gas chromatogram of residual crude oil after treatment by different bacterial strains in presence/ absence of each of biosurfactants and polymers (CPVAF & CPVA) separately.