Ammonium Nutrition Induces Triacylglycerol, beta-carotene, and Lutein Production in Dunaliella tertiolecta Butcher


ELİBOL ÇAKMAK Z.

TURKISH JOURNAL OF FISHERIES AND AQUATIC SCIENCES, vol.19, no.4, pp.331-342, 2019 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 4
  • Publication Date: 2019
  • Doi Number: 10.4194/1303-2712-v19_4_07
  • Title of Journal : TURKISH JOURNAL OF FISHERIES AND AQUATIC SCIENCES
  • Page Numbers: pp.331-342

Abstract

Distinct impacts of ammonium nutrition for simultaneous production of triacylglycerol, lutein, and beta-carotene were evaluated in Dunaliella tertiolecta. A physiologically realistic growth system was employed to compare metabolite production and growth characteristics of nitrogen deprived, ammonium- and nitrate supplied a tertiolecta. The nitrogen dependent changes in D. tertiolecta were reflected as a dramatic decrease in growth related to decreased photosynthetic activity, reduced pigmentation and increased triacylglycerol production as observed in nitrogen deprived microalgae. On the other hand, ammonium nutrition caused a time-dependent increase of neutral lipids, triacylglycerols, chlorophylls and carotenoids, lutein and beta-carotene in particular. Finally, ammonium nutrition improved FAME profile of D. tertiolecta for biodiesel production via an exclusive impact on increased saturation.