Enhanced growth and lipid production of microalgae under mixotrophic culture condition: effect of light intensity, glucose concentration and fed-batch cultivation

Bioresource Technology
Benjamas Cheirsilp, Salwa Torpee

Abstract

Microalgae capable of accumulating high lipid content were screened in photoautotrophic, heterotrophic and mixotrophic cultures. The biomass and lipid production of all tested strains in mixotrophic culture were notably enhanced in comparison with photoautotrophic and heterotrophic cultures. Among the tested strains, marine Chlorella sp. and Nannochloropsis sp. were ideal candidates for biodiesel production because of their high lipid production. The influence of light intensity and initial glucose concentration on growth and lipid content of both strains were investigated. Although increasing light intensity and initial glucose concentration enhanced the growth of both strains, it reduced their lipid content. To produce a high amount of biomass with high lipid content, a fed-batch cultivation with stepwise increasing light intensity was performed. The lipid production by this strategy was approximately twice that of conventional batch cultivation. The main fatty acid compositions of the two microalgae were C16-C18 (>80%) which are appropriate for biodiesel production.

References

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Citations

Feb 16, 2013·Bioprocess and Biosystems Engineering·Hong-Wei Yen, Jung-Tzu Chang
Sep 12, 2013·Marine Drugs·Parisa HeydarizadehMartine Bertrand
Jan 22, 2014·Journal of Industrial Microbiology & Biotechnology·Muthusivaramapandian MuthurajDebasish Das
Jun 24, 2014·Bioresource Technology·Hong-Yu RenNan-Qi Ren
Apr 11, 2014·Bioprocess and Biosystems Engineering·Ramasamy PraveenkumarYou-Kwan Oh
Oct 24, 2015·Applied Biochemistry and Biotechnology·Jitpisut SeepratoomroshKunn Kangvansaichol
Oct 2, 2012·Bioresource Technology·Seyedeh Fatemeh MohsenpourNik Willoughby
Mar 26, 2015·Preparative Biochemistry & Biotechnology·M A Mohammad MirzaieB Ghobadian
Sep 1, 2015·Current Opinion in Biotechnology·Jennifer LeveringKarsten Zengler
Mar 31, 2016·Marine Drugs·Xiao-Nian MaFeng Chen
Aug 26, 2015·Environmental Science and Pollution Research International·Pooja KandimallaHimabindu Vurimindi
Dec 3, 2014·Biotechnology Advances·Stamatia BellouGeorge Aggelis
Apr 25, 2015·Environmental Science & Technology·Aadhar JainDavid Erickson
Aug 3, 2013·Bioresource Technology·Yanming WangMarilyn G Wiebe

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