Blue-Red LED wavelength shifting strategy for enhancing beta-carotene production from halotolerant microalga, Dunaliella salina

Sang Il Han, Sok Kim, Changsu Lee, Yoon E. Choi

    Research output: Contribution to journalArticlepeer-review

    56 Citations (Scopus)

    Abstract

    In the present study, to improve the photosynthetic betacarotene productivity of Dunaliella salina, a blue-red LED wavelength-shifting system (B-R system) was investigated. Dunaliella salina under the B-R system showed enhanced density and beta-carotene productivity compared to D. salina cultivated under single light-emitting diode light wavelengths (blue, white, and red light-emitting diode). Additionally, we developed blue light-adapted D. salina (ALE-D. salina) using an adaptive laboratory evolution (ALE) approach. In combination with the B-R system applied to ALE-D. salina (ALE B-R system), the beta-carotene concentration (33.94 ± 0.52 μM) was enhanced by 19.7% compared to that observed for the non-ALE-treated wild-type of D. salina (intact D. salina) under the B-R system (28.34 ± 0.24 μM).

    Original languageEnglish
    Pages (from-to)101-106
    Number of pages6
    JournalJournal of Microbiology
    Volume57
    Issue number2
    DOIs
    Publication statusPublished - 2019 Feb 1

    Bibliographical note

    Funding Information:
    This work was supported by the Government of South Korea through the National Research Foundation of Korea (NRF-2016R1D1A1B03932773). This research was also supported by the Marine Biotechnology Program of the Korea Institute of Marine Science and Technology Promotion (KIMST) funded by the Ministry of Oceans and Fisheries (MOF) (No. 20170488).

    Publisher Copyright:
    © 2019, The Microbiological Society of Korea and Springer Nature B.V.

    Keywords

    • Dunaliella salina
    • adaptive laboratory evolution
    • beta-carotene
    • light-emitting diode
    • wavelength shift

    ASJC Scopus subject areas

    • Microbiology
    • Applied Microbiology and Biotechnology

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