Preliminary tests on nisin and pediocin production using waste protein sources: Factorial and kinetic studies

摘要: Lactic acid bacteria, the object of current interest as bacteriocin producers, are microorganisms with complex requirements for peptidic sources, making them appropriate indicators testing suitability formulations based on proteinaceous wastes use microbiological media. Different peptones obtained from visceral and fish muscle residues promoted growth lactic bacteria when applied individually or in combination. Kinetic parameters production were similar and, some cases (pediocin), far superior (>500%) to those bactopeptones commercial media specifically recommended growth. Visceral residues, especially subjected a brief process autohydrolysis at 20 °C, more efficient bacterial than muscle, even was treated pepsin.