Abstract
Considerable interest had been focused on the freshwater green microalga, Parietochloris incisa, due to its ability to accumulate substantial quantities of arachidonic acid (AA) .The current source of AA is a fungus, Mortierella alpina and P. incisa is being acknowledged as a potential plant source of AA at a commercial scale.This work involved growth optimization for biomass production in outdoor conditions using a Vertical Tubular Photobioreactor.The effect of different media formulations and nitrogen concentrations on biomass productivity were studied and the optimal cell density was defi ned.It was observed that high concentrations of nitrogen and other nutrients did not support signifi cantly higher productivities.Highest biomass productivity was obtained in Bold Basal medium with 1.5 gl -1 sodium nitrate at cell density range of 4.65 and 4.32 gl -1 for laboratory and outdoor grown inocula, respectively.The harvesting cycle of a semi-continuous culture investigation revealed that biomass productivity increased up to the 3 rd harvest but productivity sharply declined subsequently.The maximum biomass productivity of 0.7 gl -1 d -1 was achieved at the third harvest in the semi-continuous cultivation at initial cell density of 3.92 gl -1 .
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Claims 0
Judged adjacent: green algae — claims were not extracted. This is a scope decision by the model, not a statement about the paper’s findings.