PENGARUH MEDAN MAGNET TERHADAP PRODUKTIVITAS LIPID MIKROALGA Choricystis sp. LIPI-LBB13-AL045 UNTUK PRODUKSI BIODIESEL

Achrimidiasti Oktariflani, Tri Saptari Haryani, Swastika Praharyawan

Abstract


Microalgae is one of the biological riches in Indonesian waters, especially in freshwater waters. The existence of microalgae at the moment becomes the main attraction for the world of research, especially in the field of biotechnology to produce biodiesel. Growth and productivity of lipid microalgae can be influenced by several factors, one of the influencing factors is the magnetic field. The study aimed to determine growth of microalgae and magnetic field effect on Choricystis sp. LIPI-LBB-AL045. The study used experimental method with microalgae Choricystis sp. LIPI-LBB-AL045 as samples tested and exposure to magnetic fields as testers. Treatments included microalgae cultivation exposed by treatment of variations in magnetic force 400, 1600, 4000, and 4800 gauss with a polar magnetic field S, calculated cell microalgae daily using haemocytometer for 9 days of observation. Parameters observed were microalgae growth and lipid productivity Choricystis sp. LIPI-LBB-AL045. The results showed that Choricystis sp. LIPI-LBB-AL045 which is exposed to pole magnetic field S (South) with magnetic power of 4000 gauss is able to achievegrowth of 0.2928 cells/day and capable of doubling the cell for 2.36 days, and result in lipid productivity of 49.36  0.91 mg/L/day. Thus it can be concluded that magnetic field effect on growth and lipid productivity of microalgae Choricystis sp. LIPI-LBB-AL045.

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