International Journal of Marine Science, 2017, Vol.7, No.42, 399-410
408
Biodegradation of PAHs as described by Johnsen et al. (2005) can serve three different functions:
1
-
Assimilative biodegradation that yields carbon and energy for the microorganism and goes along with the
mineralization of the compound.
2
-
Intracellular mechanism of PAHs is soluble in water and therefore causes excretion.
3
-
Cometabolism which is the degradation of PAHs without production of energy and carbon for the organism
metabolism
.
Figure 19 Crude oil 0.5% with
Ochrobac. anthropi
Figure 20 Crude oil 1.0% with
Ochrobac. anthropi
These differences between the bacterial degradation of only the PAH environment probably reflect the diversity in
the catabolic systems PAH and general physiology and possibly mediated ecological differences that are not
understood (Brian et al., 2001).
The degradation of aliphatic hydrocarbons and PAH was mainly of the mono- and dioxygenase produced by
bacteria. Therefore, the presence of six key enzymes coding genes, including both monooxygenase and
min
10
20
30
40
50
pA
0
10
20
30
40
50
60
70
FID1A,FrontSignal(FADIL2\14.D)
Acenaphthlene
Acenaphthene
Fluorene
Phenanthrene
Anthracene
Fluoranthene
Pyrene
Benzo(a)fluoranthene
Chrysene
Benzo(b)fluoranthene+Benzo(k)fluoranthene
Dibenz(a)pyrene
Indeno(1,2,3-cd)pyrene+Dibenz(a,h)anthracene
Benzo(g,h,i)perylene
min
10
20
30
40
50
pA
0
10
20
30
40
50
60
70
FID1A,FrontSignal(FADIL2\15.D)
Acenaphthlene
Acenaphthene
Fluorene
Phenanthrene
Anthracene
Fluoranthene
Pyrene
Benzo(a)fluoranthene
Chrysene
Benzo(b)fluoranthene+Benzo(k)fluoranthene
Dibenz(a)pyrene
Indeno(1,2,3-cd)pyrene+Dibenz(a,h)anthracene
Benzo(g,h,i)perylene
