Effect of the gelatin extraction method from tilapia skin and its application as a coating

The objective of this study was to analyze gelatins extracted from tilapia (Oreochromis niloticus) skin and evaluate its effect as a coating on fish fillets the same species. Four gelatin extractions skins were prepared in acidic alkaline conditions, followed by filtration freeze drying. samples analyzed for moisture, lipids, ash, proteins, color parameters, viscosity, spectrophotometry coatings made with (FG) commercial (CG) sensorially tested. protein content viscosity FG influenced extraction method. coated showed less moisture than those CG. sensorial acceptance not use coatings. Therefore, appears sustainable alternative after disposal industrial processing.