Abstract
Coagulation of Skeletonema costatum biomass was induced at alkaline pH in enriched sea-water to concentrate the microalgal suspensions by decantation. Incubation of the concentrated cultures at 15 °C after return at pH 7.5 preserved cell viability and increased the yield of lipid extraction and the 20:5(n-3) fatty acid content of the diatom biomass.
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