Fig. 5From: Filamentous cyanobacteria triples oil production in seawater-based medium supplemented with industrial waste: monosodium glutamate residueExcitation-emission matrix fluorescence spectra of Spirulina subsalsa medium containing seawater and MSGR, at the beginning of a first use, b second use and c third use. Region A: humic-like substances, Region B: fulvic-like substancesBack to article page