Quality of Chaetoceros calcitrans Cultured with Different Concentrations of Potassium Nitrate (KNO3)

  • Alfarisi Prafanda Udayana University
  • Pande Gde Sasmita Julyantoro Udayana University
  • Ni Putu Putri Wijayanti Udayana University

Abstract

Addition of different fertilizer concentrations into cultivation media affects the cell density of microalgae. Potassium nitrate (KNO3), is one of the components in Guillard fertilizer composition commonly used for microalgae culture. This study aims to determine the quality of Chaetoceros calcitrans when cultured with different concentration of KNO3. This research was conducted from November 2019 to January 2020 at Balai Perikanan Budidaya Air Payau (BPBAP) Situbondo and Biosain Laboratory, Jember State Politeknik, East Java. This study consists of four treatments and three replicates. The object in this study was C. calcitrans culture with initial density 105 cells/ml. The main parameters observed were cell density, biomass, protein and amino acids contents and medium parameters such as temperature, pH, DO, salinity, nitrate and phosphate. There were four concentrations of KNO3 used in this study, namely control (75 g/l), treatment Group A (100 g/l), treatment B (125 g/l) and treatment C (150 g/l). The results showed that the cells density of C. calcitrans at control, treatment Group A, B and C were 110.4; 105.2; 108.3; and 100.8 (×104 cells/ml), respectively. This study indicated that different concentration of KNO3 affect the starting point of stationary phase, but One Way ANOVA test showed that those treatments had no significant effect (P?0,05) on the growth rate and dry biomass of C. calcitrans. Finally, we found that the protein content in addition of 75, 100, 125 and 150 g/l KNO3 were 9.748; 8.802; 6.812; and 3.776%, respectively.

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Author Biographies

Alfarisi Prafanda, Udayana University

Marine and Fisheries Faculty

Pande Gde Sasmita Julyantoro, Udayana University

Marine and Fisheries Faculty

Ni Putu Putri Wijayanti, Udayana University

Marine and Fisheries Faculty

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Published
2020-03-15
How to Cite
PRAFANDA, Alfarisi; JULYANTORO, Pande Gde Sasmita; WIJAYANTI, Ni Putu Putri. Quality of Chaetoceros calcitrans Cultured with Different Concentrations of Potassium Nitrate (KNO3). Advances in Tropical Biodiversity and Environmental Sciences, [S.l.], v. 4, n. 1, p. 5-9, mar. 2020. ISSN 2622-0628. Available at: <https://ojs.unud.ac.id/index.php/ATBES/article/view/57607>. Date accessed: 21 sep. 2020. doi: https://doi.org/10.24843/ATBES.2020.v04.i01.p02.
Section
Articles