Characterization of a new zeaxanthin producing strain of Chlorella saccharophila isolated from New Zealand marine waters

Dilip Singh, Munish Puri, Serena Wilkens, Anshu Mathur, Deepak Tuli, Colin Barrow

    Research output: Contribution to journalArticle

    35 Citations (Scopus)

    Abstract

    A fast growing strain of Chlorella saccharophila was isolated from the marine water of New Zealand and grown in heterotrophic conditions using glucose or glycerol as a carbon source. Biomass production was found to be higher in culture fed with glucose (2.14±0.08gL-1) as compared to glycerol (0.378±0.04gL-1). Lipid accumulation was similar for both carbon sources, at approximately 22% of dry cell weight. However, carotenoid yield was higher with glycerol (0.406±0.0125mgg-1) than with glucose (0.21±0.034mgg-1). Further optimization of the growth of the isolate gave maximal carotenoid production of 16.39±1.19mgg-1 total carotenoid, containing 11.32±0.64mgg-1 zeaxanthin and 5.07±0.55mgg-1 β-carotene. Comparison of various chemical and physical carotenoid extraction methods showed that ultrasonication was required for maximum extraction yields. The new strain has potential for biofuel, with carotenoid co-production.

    Original languageEnglish
    Pages (from-to)308-314
    Number of pages7
    JournalBioresource Technology
    Volume143
    DOIs
    Publication statusPublished - Sep 2013

    Keywords

    • Biofuel
    • Carotenoids
    • Microalgae
    • RP-HPLC
    • Ultrasonication

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