It is one of the plants with the highest bioconversion efficiency. She worked for forty years at the head of the US Army's national bioconversion studies. The bioconversion of biomass to mixed alcohol fuels can be accomplished using the MixAlco process. Anaerobic methanotrophs rely on the bioconversion of methane using the enzymes called methyl-coenzyme M reductases. "C. elegans" can be used for phenanthrene bioconversion or for steroid transformation. As a result, typical bioprocesses employ a separation technique after bioconversion. Beta-carotene 15,15'-dioxygenase; however, the bioconversion of gamma-carotene to retinol has not been well-characterized.