(192j) Lipid Production From Lignocellulosic Materials Via Filamentous Fungi

Zhang, J. - Presenter, University of Minnesota

Microbial lipids converted from lignocellulosic materials attract much attention because of the availability, and effective cost of lignocellulosic materials; and several filamentous fungal strains show promising features as lipid producers. The fungal conversion is of low requirements for equipments and technique training. It is also ideal for the oleaginous fungi producing hydrolytic enzymes that can directly utilize lignocellulosic materials for biofuels production. In our research work, Mortierella isabellina was used as a model fungal strain to study the whole process of microbial lipids production from lingnocellulois materials. We found several advantages of M. isabellina for lipis production from lignocellulosic materials, such as utilization of all kinds of sugars, tolerance to certain hydrolysis inhibitors, relatively easy pellet formation in liquid culture, and high lipid content even at low C/N ratio conditions. Several conversion strategies were carried out for lipid production by M. isabellina using lignocellulosic materials as substrate. Our primer results show Mortierella isabellina can accumulate lipid in submerge and solid state cultivations; and lipid profile of Mortierella isabellina fit the requirements for biodiesel production.