Affiliation:
1. Department of Engineering and Architecture , 9370 University of Parma , Parco Area delle Scienze , 181/A , 43124 , Parma , Italy
2. Department of Food and Drug Science , 9370 University of Parma , Parco Area delle Scienze , 49/A, 43124 , Parma , Italy
Abstract
Abstract
The paper presents a numerical approach to investigate the performance of a thin-film ultraviolet reactor in treating three different fruit juices (apple, orange and pineapple) with UV-C radiation, under six flow rate conditions. Minimum, average and maximum doses were calculated for each configuration, by integrating, over time the irradiance over one thousand different streamlines. The presented approach allows for calculating the dose distribution achieved, thus assessing both the fulfilment of regulatory requirements and the uniformity of the treatment. Experimental tests were finally performed on both apple and orange juice, with a flow rate of 80 L/h. For apple juice, more than 3 Log CFU/mL reductions were obtained on Escherichia coli ATCC 11,229, while, for orange juice, a negligible reduction (0.05 Log CFU/mL) was achieved. These results, according to biodosimetry data from other studies, correspond to UV-C dose distributions that confirm those calculated.
Reference40 articles.
1. Salomão, BdeCM. Fruit juices. In: Pathogens and Spoilage Microorganisms in Fruit Juice. Elsevier; 2018:291–308 pp.
2. Baysal, AH. Short-wave ultraviolet light inactivation of pathogens in fruit juices. Fruit Juices 2018:463–510. https://doi.org/10.1016/B978-0-12-802230-6.00024-2.
3. Centers for Disease Control and Prevention (CDC). Surveillance for foodborne disease outbreaks – United States, 2007. MMWR Morb Mortal Wkly Rep 2010;59:973–9.
4. Quintero-Ramos, A, Churey, JJ, Hartman, P, Barnard, J, Worobo, RW. Modeling of Escherichia coli inactivation by UV irradiation at different pH values in apple cider. J Food Protect 2004;67:1153–6. https://doi.org/10.4315/0362-028X-67.6.1153.
5. Danyluk, MD, Goodrich-Schneider, RM, Schneider, KR, Harris, LJ, Worobo, RW. Outbreaks of foodborne disease associated with fruit and vegetable juices 1. n.d; 1922–2010.
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