Effects of Nitrogen and Phosphorus Concentrations on the Growth and Lipid Accumulation of Microalgae Scenedesmus obliquus

Year 2022, Volume: 11 Issue: 2, 194 - 201, 24.06.2022

Leyla Uslu , Oya Işık , Yasemin Barış , Selin Sayın

https://doi.org/10.33714/masteb.1100624

Cited By: 1

Abstract

In the study, Scenedesmus obliquus green algae was cultivated under laboratory conditions at 21±2°C, 16:8 (light:dark) photoperiod and continuous aeration in different nitrogen and phosphorus ratio nutrient medium and its growth was determined. Dry weight, cell density (optical density) and chlorophyll a and b were used to determine the growth of the algae. The best growth was determined in the group consisting of 30 ml NaNO₃+10 ml PO₄. The amount of biomass obtained was determined as 1.549 gL^-1 in this group. The lowest values were the group containing 5 ml NaNO₃+5 ml PO₄. With the decrease in the amount of nitrogen in the medium, an increase in the amount of carotene and a decrease in the amount of chl a and b were detected. The highest lipid values were determined as 36.7% in the group containing 5 ml NaNO₃+5 ml PO₄ and 36.2% in the group containing 5 ml NaNO₃+10 ml PO₄.

Keywords

Growth, Lipid, Scenedesmus obliquus, Nitrogen concentration, Phosphorus concentration

Supporting Institution

Çukurova University Scientific Research Projects Unit

Project Number

FBA-2018-11155

Thanks

We gratefully acknowledge the research funding provided for this project (Project No: FBA-2018-11155) by the Scientific Research Projects Unit at Cukurova University for their financial support.

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