Notice of RetractionGrowth Effects on Mixed Culture of Dunaliella salina and Phaeodactylum tricornutum under Different Inoculation Densities and Nitrogen Concentrations

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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In the present study, growth effect on mixed culture of these two algae were studied under different inoculation proportions (10 : 0, 7 : 3, 5 : 5, 3 : 7, 0 : 10) and low, medium, and high nitrogen concentrations of 1.4mg/L, 14mg/L, and 140 mg/L, respectively. By evaluating cell density, biomass, chlorophyll a and protein content in the culture, it was found that colony cell growth of D. salina and P. tricornutum were increased with the increasing of nitrogen concentrations. Additionally, mixed culture of D. salina and P. tricornutum under high and medium nitrogen concentrations was found to led an increased growth of cell colonies (especially when the inoculation proportion was 7:3), increased chlorophyll a content by as much as 96.7% and 132.8%, and increased protein content by 1.3 and 2.8 folds as compared to that obtained with monoculture of D. salina and P. tricornutum. In contrast, when the mixed culture contained low concentration of nitrogen, cell colonies growth was restricted due to limitation of nitrogen.