How algal organic matter differs in species and growth phase of phytoplankton

0453702 - ÚH 2016 eng C - Conference Paper (international conference)
Barešová, Magdalena - Pivokonská, Lenka - Pivokonský, Martin
How algal organic matter differs in species and growth phase of phytoplankton.
2015.
[IWA Specialist Conference on Natural Organic Matter in Drinking Water. Malmö (SE), 07.09.2015-10.09.2015]
R&D Projects: GA ČR GAP105/11/0247
Institutional support: RVO:67985874
Keywords : algal organic matter * molecular weight fractionation * protein content
Subject RIV: BK - Fluid Dynamics

The study is aimed at the characterisation of algal organic matter (AOM) derived from the green alga Chlamydomonas geitleri, the diatom Fragilaria crotonensis and the cyanobacterium Microcystis aeruginosa. Growth of the phytoplankton was monitored by cell counting, optical density measurements and dissolved organic carbon concentration. Extracellular organic matter (EOM) and cellular organic matter (COM) were characterized in terms of the protein content, hydrophobicity and molecular weights. It was ascertained that both EOM and COM were predominantly hydrophilic. COM contained higher protein content than EOM. The character and the molecular weight distribution of EOM/COM were dependent on the species and the growth phase of phytoplankton.
Permanent Link: http://hdl.handle.net/11104/0254438