Enzymatic production is one of the most promising fields within technologies for the synthesis of high added value compounds, given their constant growth due to the great capacity of microorganisms to carry out chemical transformations. The enzymes produced from fermentation processes have been used for environmental control. Many of these enzymes can be produced from industrial residues, reducing the production cost. Lipases are a group of enzymes that catalyze hydrolysis of triglycerides to glycerides and fatty acids. Lipases have been used to reduce the concentration of lipids contained in effluent, promoting hydrolysis of the oils and fats present. The aim of this work was to evaluate lipase production by fungi isolated from dairy effluent. We obtained 21 isolates of fungi, of the genus Penicillium, Aspergillus, Trichoderma and Fusarium. In the screening, nine isolates were selected on the basis of their capacity to grow in a medium containing olive oil as substrate. In submerged fermentation, the fungi E9 (Aspergillus), E21 (Aspergillus) and E20 (Penicillium) were the ones that presented the greatest enzymatic activity, from 1.250 to 2.250 U, using as cultivation medium the effluent collected from the treatment system equalizer.
dairy effluent; submerged fermentation; lipases
