Effects of hydrolysis and bacterial degradation in the cells on hydrocarbons and biomarkers generated by pyrolysis of green algaChlorella protothecoides

The relative contents of normal alkanes and isoprenoid alkanes from pyrolysed pmducts of green algaChlorella protothecoides increased when the algal cell subject to hydrolysis and bacterial degradation were wed. Their value of C23-/C 24+ and the rate of Pr/C17 increased greatly whereas the contents of C20 alkenes were remarkably low compared with that from untreated sample (as control). These results are more analogous to the formation process of hydrocarbons derived from algae in natural geological environment.