Modeling of microbial inactivation by high hydrostatic pressure (HHP) requires a plot of the log microbial count or survival ratio versus time data under a constant pressure and temperature. However, at low pressure and temperature values, very long holding times are needed to obtain measurable inactivation. Since the time has a significant effect on the cost of HHP processing it may be reasona...

Continuous-flow microwave heating has potential in aseptic processing of various food products, including purees from sweetpotatoes and other vegetables. Establishing the feasibility of a new processing technology for achieving commercial sterility requires evaluating microbial inactivation. This study aimed to assess the feasibility of using commercially available plastic pouches of bioindicat...

A mathematical approach incorporating the shoulder effect during the quantification of microbial heat inactivation is being developed based on »the number of log cycles of reduction« concept. Hereto, the heat resistance of Escherichia coli K12 in BHI broth has been quantitatively determined in a generic and accurate way by defining the time t for x log reductions in the microbial population, i....

The combined effects of biofilm dispersion with a 2-aminoimidazole-triazole conjugate and bactericidal activity with a photodynamic inactivation agent suggest a novel combination therapy for treating diverse microbial infections.

This research investigated the effect of temperature and relative humidity (RH) conditions during ethylene oxide (EtO) fumigation for inactivation Salmonella Enterococcus faecium NRRL B-2354 on whole black peppercorns. Black peppercorn samples were inoculated with a five-strain cocktail or E. inoculum. EtO (735.3 mg/L) was conducted at different treatment temperatures (46, 53, 60 °C) RH levels ...

conclusions anova results showed that the effect of cycle and time on the selected bacterial removal efficiency were more important than that of the microbial concentration. results the results showed that e. coli and e. faecalis were effectively treated at 10 pulse/s in 9 minutes and 6 log cfu/ml bacterial suspension (p < 0.0001 for e. coli with 99.99% (4 log) and p = 0.0002 for e. faecalis wi...

The application of Pulsed Electric Fields (PEF) at high frequencies leads to rapid and volumetric ohmic heating. Its in solid foods could avoid the problem conventional systems which external areas are over-treated order apply desired heat treatment center. In this study it was evaluated heating technical agar cylinders by applying PEF (2.5 kV/cm, 50 Hz) warming electrodes 25, 32 39 °C. Results...

Most of spices are produced using traditional systems. In unsanitary conditions, spices can contain large numbers of pathogenic microbes such as bacteria, molds and yeasts. Some microorganisms are known as human pathogens, which need disinfection mechanisms that minimize their potential harms to active substances in spices. Use of contaminated spices in foods can significantly decrease the shel...

Hydrogels are materials consisting of a network hydrophilic polymers. Due to their good biocompatibility and hydrophilicity, they widely used in biomedicine, food safety, environmental protection, agriculture, other fields. This paper summarizes the typical complex photocatalysts, photosensitizers, hydrogels, as week antibacterial activities basic mechanisms photothermal photodynamic effects. I...

This review presents an update describing binary and ternary semiconductors involving interfacial charge transfer (IFCT) in composites made up by TiO2, CuO, Ag2O Fe2O3 used microbial disinfection (bacteria viruses). The mechanism, kinetics generation of reactive oxygen species (ROS) solution under solar/visible light are discussed. surface properties the photocatalysts their active catalytic si...