US EPA

1490634 

Journal Article 

Enhanced biodegradation of Casablanca crude oil by a microbial consortium in presence of a rhamnolipid produced by Pseudomonas aeruginosa AT10 

Abalos, A; Vinas, M; Sabate, J; Manresa, MA; Solanas, AM 

2004 

Yes 

Biodegradation
ISSN: 0923-9820
EISSN: 1572-9729 

15 

4 

249-260 

15473554 

10.1023/B:BIOD.0000042915.28757.fb 

WOS:000224095600004 

https://www.proquest.com/docview/14710976?accountid=171501&bdid=62429&_bd=aGP9WNj%2FKtKHe9hBdklenUNJZXs%3D
Exit
 

The biodegradation of oil products in the environment is
often limited by their low water solubility and dissolution rate. Rhamnolipids produced by
Pseudomonas aeruginosa AT10 were investigated for their potential to enhance bioavailability and
hence the biodegradation of crude oil by a microbial consortium in liquid medium. The
characterization of the rhamnolipids produced by strain AT10 showed the effectiveness of
emulsification of complex mixtures. The addition of rhamnolipids accelerates the biodegradation
of total petroleum hydrocarbons from 32% to 61% at 10 days of incubation. Nevertheless, the
enhancement of biosurfactant addition was more noticeable in the case of the group of isoprenoids
from the aliphatic fraction and the alkylated polycyclic aromatic hydrocarbons (PHAS) from the
aromatic fraction. The biodegradation of some targeted isoprenoids increased from 16% to 70% and
for some alkylated PAHs from 9% to 44%. 

alkylated PAHs; biodegradation; biosurfactant; crude oil; isoprenoids; microbial consortium