Exopolysaccharides (EPS) produced by Gordonia alkanivorans CC-JG39 was used to stimulate cell floating, cell growth, and diesel biodegradation of indigenous or commercial-available, diesel-degrading bacteria. Addition of EPS-containing supernatant into the culture medium resulted in floatation of the non-floating bacteria and allowed a 40–45% and 38–42% increase in diesel degradation and cell growth, respectively. The EPS-stimulating effect on cell growth and diesel degradation positively correlated with the EPS dosage. Thus, the EPS may act as a biostimulant for bioremediation of oil-contaminated water or soil.
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The authors gratefully acknowledge the financial support from Taiwan’s Ministry of Economic Affairs under Grant no. 95-EC-17-A-10-S1-0013.
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Ta-Chen, L., Chang, J. & Young, C. Exopolysaccharides produced by Gordonia alkanivorans enhance bacterial degradation activity for diesel. Biotechnol Lett 30, 1201–1206 (2008). https://doi.org/10.1007/s10529-008-9667-8
- Diesel biodegradation
- Floatation activity
- Gordonia alkanivorans