Biosurfactant-producing strains could be cultivated using very
cheap carbon sources such as waste oils or whey, which would
decrease the costs of production.Recent research has shown that
agroindustrial waste have a potential to be used for the production
of biosurfactants and for cultivation of biosurfactant-producing
strains (Sobrinho et al., 2008; Barros et al., 2008). The
biosurfactant-producing strains could either be cultivated in this
recycling based medium, harvested and added to the system as
washed cells, or the concept of a direct addition of cells and spent
broth could be further refined, with less phytotoxic carbon sources.
Again, this would have the advantage of avoiding expensive
downstream processing or extraction with organic solvents