Effect of high hydrostatic pressure challenge on biogenic amines, microbiota, and sensory profile in traditional poultry- and pork-based semidried fermented sausage

Research Areas: Food Science & TechnologyThe processing of traditional poultry- and pork-based semidried fermented smoked sausages needs to bemodernized to improve product quality and further extend its shelf life. The aim of the present study was to applydifferent combinations of high pressure (300 to 600 MPa) and time (154 to 1,800 s) on the sausages using an experimentaldesign based on response surface methodology. The chemical, microbial, and sensory characteristics of sausages treatedwith high-pressure processing (HPP) were investigated. HPP application to semidried fermented sausages resulted incolor changes, which could be dependent on the ingredients, formulation, and smoking conditions used. Nevertheless,none of the HPP treatments applied resulted in detectable changes in sensory properties, as tested in a triangle test andconfirmed by the analysis of focus groups assessment. Significant differences were detected for lactic acid bacteria (LAB)counts from 344 MPa and 1,530 s onward, with a marked decrease for the combination of 600 MPa and 960 s (P