Laju Pertumbuhan Spesifik dan Kandungan Asam Lemak pada Mikroalga Spirulina platensis, Isochrysis sp. dan Porphyridium cruentum

Specific Growth Rate and Fatty Acid Content of Microalgae Spirulina platensis, Isochrysis sp. and Porphyridium cruentum Microalgae is cell factory that is capable of converting carbon dioxide to potential biofuel, foods and high-value bioactive with sunlight assistance. The purpose of this study is to analyze the specific growth rate and fatty acid content of S. platensis, Isochrysis sp., P. cruentum. Cultivation of pure microalgae is conducted in laboratory for 8 days with media Guillard/f2. Extraction process is conducted using soxhletation method and hexane as the solvent. Fatty acid profile and content in microalgae is performed using gas chromatography mass spectrometry (GC-MS). The highest density of microalgae found at day 8 cultivation. The highest specific growth rate found in P. cruentum in 0.37/ day. The highest and lowest total of fatty acid concentration found in Isochrysis sp. (96.18%) and P. cruentum (34.73%) respectively. P. cruentum has the highest levels of saturated fatty acids (SFA), whereas S. platensis has the highest levels of mono unsaturated fatty acid (MUFA). Isochrysis sp. has lower levels poly unsaturated fatty acid (PUFA) than S. platensis.