Using the above experimental conditions, which gave the highest nhexane
lipid extraction with N. gaditana, steam explosion experiments
were performed with C. sorokiniana and P. tricornutum and the results
obtained in terms of the amount of lipid recovered by Bligh and Dyer
and by n-hexane at 60 °C are shown in Table 4. To allowfor comparison,
the values of lipid extracted from the fresh samples are also included
as well as the analogous results obtained with N. gaditana. For all the
microalgae species studied, after the steam explosion pretreatment,
the lipid extraction yields both by Bligh and Dyer and by n-hexane
were improved compared to when there was no pretreatment.