IJERPH, Vol. 14, Pages 1196: Modelling the Ozone-Based Treatments for Inactivation of Microorganisms

IJERPH, Vol. 14, Pages 1196: Modelling the Ozone-Based Treatments for Inactivation of Microorganisms International Journal of Environmental Research and Public Health doi: 10.3390/ijerph14101196 Authors: Agnieszka Brodowska Agnieszka Nowak Alina Kondratiuk-Janyska Marcin Piątkowski Krzysztof Śmigielski The paper presents the development of a model for ozone treatment in a dynamic bed of different microorganisms (Bacillus subtilis, B. cereus, B. pumilus, Escherichia coli, Pseudomonas fluorescens, Aspergillus niger, Eupenicillium cinnamopurpureum) on a heterogeneous matrix (juniper berries, cardamom seeds) initially treated with numerous ozone doses during various contact times was studied. Taking into account various microorganism susceptibility to ozone, it was of great importance to develop a sufficiently effective ozone dose to preserve food products using different strains based on the microbial model. For this purpose, we have chosen the Weibull model to describe the survival curves of different microorganisms. Based on the results of microorganism survival modelling after ozone treatment and considering the least susceptible strains to ozone, we selected the critical ones. Among tested strains, those from genus Bacillus were recognized as the most critical strains. In particular, B. subtilis and B. pumilus possessed the highest resistance to ozone treatment because the time needed to achieve the lowest level of its survival was the longest (up to 17.04 ...
Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Article Source Type: research