Bright Singh, I S; Lawman, D; Kutty, S N; Rosamma, Philip(May 14, 2013)
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Abstract:
Occurrence of black yeasts in the slope sediments of Bay of Bengal was investigated during FORV Sagar Sampada cruises 236 and 245. The black yeast population was found to be very scanty in the area and the isolates could be obtained from 200m to 1000m depth regions in the slope sediments. The isolates were identified as Hortaea werneckii by Internal Transcribed Spacer (ITS) sequencing. The biodegradation potential of these strains was found to be very high with all the strains exhibiting protease, lipase and amylase production. The optimum growth conditions were pH 8, salinity 30 ppt and temperature 30oC. The pigment melanin, in these organisms was identified to be of dihydroxynaphthalene type by NMR. The melanin was found to exhibit inhibitory activity against different human and fish pathogens. Melanin degrading enzyme could also be extracted from these organisms
Sreedevi, Kutty N; Dr.Damodaran,R; Dr.Rosamma,Philip(Cochin University of Science & Technology, November , 2009)
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Abstract:
The present study provides an account of the occurrence and diversity of
marine yeasts in the slope sediments of Arabian Sea and Bay of Bengal. It also
gives a clear idea about the role of yeasts in the benthic realm of marine
ecosystem. The lipolytic potential of the organisms indicate the presence of rich
lipid moieties in the study area. The isolates, Candida sp. SD 302 and Pichia
guilliermondii SD 337 were proved to have potential oil degrading property and
can be employed as bioremediators of oil spill after further characterization. The
black yeasts isolated during the study area were found to have high commercial
value by virtue of the by-products obtained from them. The melanin and the
melanin degrading enzyme extracted from these organisms are potential
bioactive materials for application in cosmetology.
Description:
Department of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology