Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 3, Pages 3366-3372Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.11.071
Keywords
Biosurfactant; Peanut oil cake; Bioremediation; Emulsification; Lactobacillus delbrueckii
Funding
- Council of Scientific and Industrial Research (CSIR), Government of India
- Department of Ocean Development (DOD)
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Lactobacillus delbrueckii cultured with peanut oil cake as the carbon source yielded 5.35 mg ml(-1) of biosurfactant production. Five sets of microcosm biodegradation experiments were carried out with crude oil as follows: set 1 - bacterial cells + crude oil, set 2 - bacterial cells + crude oil + fertilizer, set 3 - bacterial cells + crude oil + biosurfactant, set 4 - bacterial cells + crude oil + biosurfactant + fertilizer, set 5 - with no bacterial cells, fertilizer and biosurfactant (control). Maximum degradation of crude oil was observed in set 4 (75%). Interestingly, when biosurfactant and bacterial cells were used (set 3), significant oil biodegradation activity occurred and the difference between this treatment and that in set 4 was 7% higher degradation level in microcosm experiments. It is evident from the results that bio-surfactants alone is capable of promoting biodegradation to a large extent without added fertilizers. (C) 2010 Elsevier Ltd. All rights reserved.
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