Acid fruits such as hog plum and pequi are used as coloring agents in popular culture. An experimental study was carried out with the objective of investigating colorants extracted from fruit peels to color animal tissues, defining the best concentration for pequi extract at 25% and brisket at 20%. If you select and thin your heart, lung, liver and kidney tissues according to your group, Group 1: control; Group 2: ciruela de cerdo extract; Group 3: pequi extract. Groups 2 and 3 formed three subgroups according to the concentration tests. A qualitative and quantitative analysis of the fabrics was carried out. The results demonstrated that extracts of brisket and pequi, in hydroalcoholic concentrations of 70%, were capable of generating color and allowing visualization of the tissue architecture, with a yellow tone, especially in the bristle girdle, tinting the cytoplasm of the tissue