Studies on estuarine yeasts: 3. Hydrocarbon degraders

E. DaCosta, J. DeSouza


From the water samples collected from Zuari, Mandovi and Chapora estuaries of Goa, India 103 types of yeasts were isolated. The yeast density ranged from 100 to 1600 cells/litre. Optimum salinity and high ratio of organic nitrogen to inorganic nitrogen seem to influence the yeast distribution in the estuaries. The most common yeasts belonged to the genera Debaryomyces, Pichia, Saccharomyces, Candida, Cryptococcus, Geotrichum, Kloeckera, Rhodotorula, Trichosporon and Pullularia. Thirty percent of the yeast isolates were found to degrade hydrocarbon (diesel oil) and their presence in the estuaries appears to be advantageous in reducing oil pollution


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