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Table 3 Biomarker ratios for different microbial consortium from laboratory degraded oil and from Pampo Sul field (P2).

From: Could petroleum biodegradation be a joint achievement of aerobic and anaerobic microrganisms in deep sea reservoirs?

Consortia

Biomarkers ratios

Time (days)

  

Control

10

20

30

40

50

60

P2

Aerobic

C 28 TT/C 35 H a

0.91

0.93

1.02

1.04

1.23

1.31

1.35

1.10

 

C 29 TT/C 35 H a

1.00

1.30

1.34

1.42

1.62

1.62

1.63

1.47

 

C 35 H/C 30 H b

0.16

0.12

0.12

0.12

0.13

0.14

0.14

0.12

 

Ts/(Ts+Tm) c

0.41

0.32

0.41

0.41

0.41

0.43

0.43

0.32

 

IH d

8.41

8.24

8.13

8.10

7.50

6.90

6.71

7.36

 

Sterane/Hopane e

0.35

0.31

0.38

0.38

0.54

0.79

0.80

0.94

  

Control

30

60

90

120

150

180

P2

Anaerobic

C 28 TT/C 35 H

0.92

1.30

0.91

1.02

0.62

0.60

0.60

1.10

 

C 29 TT/C 35 H

0.94

1.41

1.22

1.23

0.81

0.73

0.61

1.47

 

C 35 H/C 30 H

0.15

0.12

0.14

0.14

0.19

0.19

0.18

0.12

 

Ts/(Ts+Tm)

0.43

0.32

0.43

0.43

0.44

0.44

0.52

0.32

 

IH

8.31

7.14

7.70

7.94

9.22

9.42

9.63

7.36

 

Sterane/Hopane

0.73

0.84

0.84

0.81

0.74

0.11

0.10

0.94

  

Control

30

60

90

120

150

180

P2

Mixed Aerobic/Anaerobic

C 28 TT/C 35 H

0.92

1.25

1.52

1.03

1.13

0.84

0.92

1.10

 

C 29 TT/C 35 H

0.94

1.17

1.30

1.55

1.75

1.43

1.16

1.47

 

C 35 H/C 30 H

0.15

0.15

0.13

0.12

0.12

0.10

0.14

0.12

 

Ts/(Ts+Tm)

0.29

0.24

0.27

0.27

0.28

0.28

0.28

0.32

 

IH

8.31

7.19

6.78

7.47

7.65

7.86

8.57

7.36

 

Sterane/Hopane

0.36

0.95

1.16

0.72

0.57

0.54

0.07

0.94

  1. aCalculated from m/z 191 mass chromatogram peak areas of the C28 - C29 tricyclic terpanes (TT) (22R + 22S). C35 17α.21β(H)-homohopane (C35H) (22R + 22S) and C30 17α.21β(H)-hopane (C30H); bCalculated from m/z 191 mass chromatogram peak areas of the [C35 (22R+22S)/(C31-C35)(22R+22S) homohopanes] × 100; cCalculated from m/z 191 mass chromatogram peak areas of the C27 17α(H)-22.29.30-trisnorhopane (Tm) and C27 18α(H)-22.29.30-trisnorneohopane (Ts); dCalculated from m/z 191 mass chromatogram peak areas of the [C35 (22R + 22S)/(C31-C35) (22R + 22S) homohopanes] × 100; eCalculated from m/z 217 mass chromatogram peak areas of the C27, C28 and C29 ααα (20R + 22S) and αββ (20R + 22S) steranes and from m/z 191 of the C29-C33 17α(H)-hopanes (20R + 22S);
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