Abstract
The study about the effect of variation concentration medium NPK to the Biomass Mastigocladus (Cyanobacteria) had been done. The aim of the study was to known the effect of variance concentration of NPK growth media within the biomass production. The other aim of the study was to determine the best concentration NPK growth media for Mastigocladus HS-46 to produce higher biomass with high lipid content. Mastigocladus HS-46 was grown in BBM as a control and NPK growth media as working media. The variance concentration of NPK growth media that had been used for this study were 80 ppm, 160 ppm and 240 ppm. Mastigocladus HS-46 was incubated on 35 °C with light intensity 1500-3000 lux and initial pH 6.5. The growth of Mastigocladus HS-46 was measured by qualitative data based on morphology and color of biomass and quantitative data based on cell diameter size (width cell), biomass weight (mg/mL), and lipid content (%). The result showed that the best concentration for Mastigocladus HS-46 growth was in 240 ppm than BBM, NPK medium 80 ppm, and NPK medium 160 ppm. Based on the highest biomass production was 2.09 mg. mL-1 and lipid content was 57%.
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