The goal of this research is to evaluate ALA production by a mixed culture of acetogens and methanogens based on the hypothesis that together these two types of anaerobes can produce more ALA than either could generate alone. Preliminary work focuses on two important factors for facilitating ALA production: the type of organism used and the presence of an inhibitor that prevents degradation of the ALA. Experiments utilize different combinations of substrates, including glucose, acetic acid, and methanol, to promote and quantify ALA production by methanogens and acetogens, both individually and in a mixed culture. Experiments also evaluate the effect of several inhibitors known to improve either methanogenic or acetogenic ALA production, including levulinic acid, dioxoheptanoic acid (DOH), and oxoglutaric acid. Results will be evaluated to determine the concentration of inhibitor and substrate composition that shows the most promise for generating higher yields of ALA and to determine whether this process merits further investigation and optimization as a feasible alternative for ALA production.