Molecular identification of marine yeast and its spectroscopic analysis establishes unsaturated fatty acid accumulation

Adarsha Gupta, Jitraporn Vongsvivut, Colin Barrow, Munish Puri

    Research output: Contribution to journalArticle

    21 Citations (Scopus)

    Abstract

    Marine microbes are competent organisms, some of which can accumulate large amounts of lipids. A yeast strain, Rhodotorula mucilaginosa AMCQ8A was isolated from the marine water of the Queenscliff region, Victoria, Australia. The yeast isolate was identified by sequencing 18s rDNA genes. Scanning electron microscopy images revealed scars on the surface of the yeast cells. The Fourier transform infrared spectroscopy microspectroscopy studies demonstrated the presence of unsaturated fatty acids by differential microscopic analysis. The sharp band at 1745 cm-1 was represented by ν(CO) stretches of ester functional groups from lipids and fats, and therefore indicated the presence of total lipids produced by the cells. Over 65% of the fatty acids from the yeast strain were analyzed as C16 and C18:1 with omega-3 content from about 6% to 7%. Thus, this marine-derived yeast could be a potential source of lipids, including omega-3 fatty acids.

    Original languageEnglish
    Pages (from-to)411-417
    Number of pages7
    JournalJOURNAL OF BIOSCIENCE AND BIOENGINEERING
    Volume114
    Issue number4
    DOIs
    Publication statusPublished - 2012

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