Citric Acid Production by the Solid-State Cultivation Consortium of Aspergillus Niger and Trichoderma Reesei from Sugarcane Bagasse

Solid-State Cultivation (SSC) may be defined as the microbial growth on solid supports in conditions of the absence of free water, i.e., similar to the occurrence of fungi found in nature [1]. This process has been highlighted in chemical, food, pharmaceutical and agricultural industries as it requires little power, produces low-waste and reuses industrial residues as substrates having advantages when compared to submerged fermentation as it produces more concentrated product and higher yield in some metabolites [2]. Among the many microorganisms that can be grown from solid supports, those distinguished by filamentous fungi have the best ability to grow in these conditions due to their physiological and biochemical characteristics [3]. After phycomycetes (Mucor