Accordingly, our data suggest that optimal operating conditions were achieved at fat concentrations between 55% and 62% and between 3.8 and 4.5 hours of fermentation, as these conditions reduced the melting point to approximately 45–47 °C. These inferences are based on the assumptions that the best process conditions are those that result in the greatest decrease in melting point, use the highest concentration of fatty waste possible and require the shortest fermentation time so as to increase the economic feasibility of the overall process.