title: Oil productivity of the tropical marine diatom Thalassiosira sp.
abstract: To understand the potential of cultivating tropical marine diatom Thalassiosira sp. to produce biofuel, biodiesel product properties and growth characteristics of Thalassiosira sp. in three different media were investigated. After medium evaluation, significant Thalassiosira sp. cell growth was observed in both Walne and enriched seawater media, but not in plain seawater medium. The microalgae grew well in alkaline condition (pH range of 8.0-8.8). The average biomass density cultured in Walne and enriched seawater media on the 6th day was 4.36 and 2.50 g L(-1), respectively. Based on ESI-IT-MS spectra, the TAGs of algal oil were identified as POP, POO, and SOO, and the FAMEs as oleic acid methyl ester. The oil productivity of Thalassiosira sp. cultured in Walne and enriched seawater media were 150 and 290 μL L(-1) d(-1), respectively. The density and kinematic viscosity of Thalassiosira sp. biodiesel were 0.857 g mL(-1) and 1.151 mm(2) s(-1).
authors.affiliation: Biochemistry Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia. zeily@chem.itb.ac.id
authors.forename: Zeily
authors.initials: Z
authors.lastname: Nurachman
authors.lastname: Hartati
authors.forename: Syahfitri
authors.initials: S
authors.lastname: Anita
authors.forename: Etsuroyya Ewidyasari
authors.initials: EE
authors.lastname: Anward
authors.forename: Gestria
authors.initials: G
authors.lastname: Novirani
authors.forename: Bill
authors.initials: B
authors.lastname: Mangindaan
authors.forename: Suryo
authors.initials: S
authors.lastname: Gandasasmita
authors.forename: Yana Maolana
authors.initials: YM
authors.lastname: Syah
authors.forename: Lily Maria Goretty
authors.initials: LM
authors.lastname: Panggabean
authors.forename: Gede
authors.initials: G
authors.lastname: Suantika
mesh_terms: D056804:Biofuels; D018533:Biomass; D001696:Biomechanical Phenomena; D003470:Culture Media / Q000737:chemistry*; D017377:Diatoms / Q000737:chemistry* / Q000254:growth & development*; D006863:Hydrogen-Ion Concentration; D013058:Mass Spectrometry; D009821:Oils / Q000302:isolation & purification* / Q000378:metabolism; D012623:Seawater / Q000737:chemistry / Q000382:microbiology*
chemical_list: D056804:Biofuels; D003470:Culture Media; D009821:Oils