Productivity levels and lipid and starch contents for axenic <i>C. minutissima</i> (top) and co-cultures of <i>C. minutissima</i> and <i>E. coli</i> (bottom).

Productivities are five-day averages and lipid and starch contents are a percent of dry weight. Three biological replicates were used in all cases except for co-cultures grown on 10 g/L glycerol where only two replicates were used. Mean value is followed by standard deviation in parenthesis. Within substrate batches (e.g. axenic C. minutissima w/glucose), values followed by the same letter are not significantly different at the 0.05 level.