Abstract
Effects of adding Fe 2+ ions in photoheterotrophic cultivation of Dunaliella salina on growth and β-carotene synthesis were investigated. Different concentrations of Fe 2+ ions and organic carbon source (acetate and malonate) were studied. A significant increase of cellular β-carotene content was observed, with a maximum value of 70 pg/cell in a culture enriched with 67.5 mM of acetate and 450 μM of FeSO 4 and 33 pg/cell in the case of 67.5 mM of malonate and 450 μM of FeSO 4. For comparison, the well-known nitrate starvation protocol was applied, and 35 pg/cell of β-carotene were obtained. By inducing an oxidative stress, Fe 2+ ions revealed to stimulate β-carotene synthesis, especially when acting in the presence of the carbon source. Furthermore for some concentration of Fe 2+ ions and organic carbon source, the loss in cells division was reduced compared to nitrate starvation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
