Treatment

Controls

Compounds

Molasses addition

No molasses

Sterilised microcosm with molasses addition

Alcohols
1-Propanol

 

+

 

-

 

-

1-Butanol

+

-

-

1-Butanol, 2,3-methyl

+

-

-

1-Pentanol

+

-

-

1-Adamantanol

+

-

-

Phenol

+

-

-

3-Vanilpropanol

+

-

-

Acids
Acetic acid

 

+

 

-

 

-

Propionic acid

+

-

-

Propionic acid, 2-methyl

+

-

-

Butanoic acid

+

-

-

Butanoic acid, 2-methyl

+

-

-

Benzene acetic acid

+

-

-

+ : compounds detected in the microcosm fluids. - :compounds either not present or present at significantly reduced concentrations.
Table 1: Comparative levels of compounds identified in petroleum reservoir microcosms after addition of molasses and anaerobic culture for 2 weeks at 50C compared to controls.