Effect of activated lactoperoxidase system, nisin and their combination on raw milk quality during refrigerated storage
Ben Moussa Olfa, Mahmoudi Imen, Boulares Mouna, Hassouna Mnasser
The inhibitory activity of lactoperoxidase system (LPS) and nisin (150 IU) added individually or in combination in raw milk was investigated against spoilage and pathogenic bacteria during 10 days of cold storage. The combined treatment kept lower acidity of raw milk when compared to control. A synergetic bacteriostatic activity was noted for the combined biopreservative agents especially against psychrotrophic flora, thermoresistant coliforms, coagulase positive Staphylococcus, Listeria spp and fungi which were an effective tool to improve raw milk quality. However, total coliforms and lactic acid bacteria were greatly reduced, respectively by the use of LPS and nisin alone.
Ben Moussa Olfa, Mahmoudi Imen, Boulares Mouna, Hassouna Mnasser. Effect of activated lactoperoxidase system, nisin and their combination on raw milk quality during refrigerated storage. International Journal of Biotechnology and Microbiology, Volume 4, Issue 1, 2022, Pages 1-7