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Environmental and nutrient conditions influence fucoxanthin productivity of the marine diatom Phaeodactylum tricornutum grown on palm oil mill effluent

Nur, M. M. A., Muizelaar, W., Boelen, P. & Buma, A. G. J., Feb-2019, In : Journal of Applied Phycology. 31, 1, p. 111-122 12 p.

Research output: Contribution to journalArticleAcademicpeer-review

Palm oil mill effluent (POME) is a type of wastewater posing large problems when discharged in the environment. Yet, due to its high nutrient content, POME may offer opportunities for algal growth and subsequent harvesting of high-value products. The marine diatom Phaeodactylum tricornutum is a potential feedstock diatom for bioactive compounds such as the carotenoid fucoxanthin, which has been shown to have pharmaceutical applications. The aim of this paper was to evaluate the growth and fucoxanthin productivity of P. tricornutum grown on POME, as a function of light intensity, temperature, salinity, and nutrient enrichment. High-saturating irradiance (300molphotonsm(-2)s(-1)) levels at 25 degrees C showed highest growth rates but decreased the fucoxanthin productivity of P. tricornutum. Box-Behnken response surface methodology revealed that the optimum fucoxanthin productivity was influenced by temperature, salinity, and the addition of urea. Nutrient enrichment by phosphorus did not enhance cell density and fucoxanthin productivity, while urea addition was found to stimulate both. We conclude that POME wastewater, supplemented with urea, can be considered as the potential medium for P. tricornutum to replace commercial nutrients while producing high amounts of fucoxanthin.

Original languageEnglish
Pages (from-to)111-122
Number of pages12
JournalJournal of Applied Phycology
Volume31
Issue number1
Publication statusPublished - Feb-2019

    Keywords

  • POME wastewater, Light intensity, Temperature, Fucoxanthin, Phaeodactylum tricornutum, WASTE-WATER, BIOMASS PRODUCTIVITY, MICROALGAE, CULTURE, ACCLIMATION, MEDIA

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