Enhanced hydrocarbon biodegradation by a newly isolated Bacillus subtilis strain

Zeitschrift Für Naturforschung. C, a Journal of Biosciences
Nelly E ChristovaBoryana Nikolova-Damyanova

Abstract

The relation between hydrocarbon degradation and biosurfactant (rhamnolipid) production by a new Bacillus subtilis 22BN strain was investigated. The strain was isolated for its capacity to utilize n-hexadecane and naphthalene and at the same time to produce surface-active compound at high concentrations (1.5 - 2.0 g l(-1)). Biosurfactant production was detected by surface tension lowering and emulsifying activity. The strain is a good degrader of both hydrocarbons used with degradability of 98.3 +/- 1% and 75 +/- 2% for n-hexadecane and naphthalene, respectively. Measurement of cell hydrophobicity showed that the combination of slightly soluble substrate and rhamnolipid developed higher hydrophobicity correlated with increased utilization of both hydrocarbon substrates. To our knowledge, this is the first report of Bacillus subtilis strain that degrades hydrophobic compounds and at the same time produces rhamnolipid biosurfactant.

Citations

May 31, 2013·Bioprocess and Biosystems Engineering·Arun Kumar PradhanBarda Kanta Mishra
Aug 26, 2014·Applied Biochemistry and Biotechnology·Arun Kumar PradhanBarada Kanta Mishra
Jun 10, 2009·Applied Biochemistry and Biotechnology·Adepu Kiran KumarPranab Goswami
Jun 10, 2017·Journal of Alzheimer's Disease : JAD·Eleni AndreadouMagda Tsolaki

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