Drastic Microbial Count Reduction in Soy Milk Using Continuous Short-Wave Ultraviolet Treatments in a Tubular Annular Thin Film UV-C Reactor
Vegetative cells of <i>Listeria monocytogenes</i> and <i>Escherichia coli</i> and spores of <i>Bacillus subtilis</i> and <i>Aspergillus niger</i> were inoculated in soy milk at an initial concentration of ≈5 log CFU/mL. Inoculated and control (non-inoc...
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| Format: | Article |
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MDPI AG
2023-10-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/12/20/3813 |
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| author | María Martínez-García Jezer N. Sauceda-Gálvez Idoia Codina-Torrella María Manuela Hernández-Herrero Ramón Gervilla Artur X. Roig-Sagués |
| author_facet | María Martínez-García Jezer N. Sauceda-Gálvez Idoia Codina-Torrella María Manuela Hernández-Herrero Ramón Gervilla Artur X. Roig-Sagués |
| author_sort | María Martínez-García |
| collection | DOAJ |
| description | Vegetative cells of <i>Listeria monocytogenes</i> and <i>Escherichia coli</i> and spores of <i>Bacillus subtilis</i> and <i>Aspergillus niger</i> were inoculated in soy milk at an initial concentration of ≈5 log CFU/mL. Inoculated and control (non-inoculated) soy milk samples were submitted to three types of treatments using a tubular annular thin film short-wave ultraviolet (UV-C) reactor with 1 mm of layer thickness. Treatments applied depended on the flow rate and the number of entries to the reactor, with UV-C doses ranging from 20 to 160 J/mL. The number of entries into the reactor tube (NET) was established as the most determining parameter for the efficiency of the UV-C treatments. Conidiospores of <i>A. niger</i> were reported as the most resistant, followed by <i>B. subtilis</i> spores, while vegetative cells were the most sensible to UV-C, with <i>Listeria monocytogenes</i> being more sensible than <i>Escherichia coli.</i> Treatments of just 80 J/mL were needed to achieve a 5 log CFU/mL reduction of <i>L. monocytogenes</i> while 160 J/mL was necessary to achieve a similar reduction for <i>A. niger</i> spores. |
| first_indexed | 2024-03-10T21:15:06Z |
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| id | doaj.art-d4c20a3699f446318b5a41d37b7bed2d |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T21:15:06Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-d4c20a3699f446318b5a41d37b7bed2d2023-11-19T16:30:10ZengMDPI AGFoods2304-81582023-10-011220381310.3390/foods12203813Drastic Microbial Count Reduction in Soy Milk Using Continuous Short-Wave Ultraviolet Treatments in a Tubular Annular Thin Film UV-C ReactorMaría Martínez-García0Jezer N. Sauceda-Gálvez1Idoia Codina-Torrella2María Manuela Hernández-Herrero3Ramón Gervilla4Artur X. Roig-Sagués5Centre d’Innovació, Recerca i Transferència en Tecnologia dels Aliments (CIRTTA), TECNIO CERTA-UAB, Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Travessera dels Turons S/N, 08193 Barcelona, SpainCentre d’Innovació, Recerca i Transferència en Tecnologia dels Aliments (CIRTTA), TECNIO CERTA-UAB, Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Travessera dels Turons S/N, 08193 Barcelona, SpainDepartament d’Enginyeria Agroalimentària i Biotecnologia, Edifici D4C, Esteve Terradas, 8, 08860 Castelldefels, SpainCentre d’Innovació, Recerca i Transferència en Tecnologia dels Aliments (CIRTTA), TECNIO CERTA-UAB, Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Travessera dels Turons S/N, 08193 Barcelona, SpainSPTA-Servei Planta Tecnologia Aliments, Universitat Autònoma de Barcelona, c/de l’Hospital S/N, 08193 Barcelona, SpainCentre d’Innovació, Recerca i Transferència en Tecnologia dels Aliments (CIRTTA), TECNIO CERTA-UAB, Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Travessera dels Turons S/N, 08193 Barcelona, SpainVegetative cells of <i>Listeria monocytogenes</i> and <i>Escherichia coli</i> and spores of <i>Bacillus subtilis</i> and <i>Aspergillus niger</i> were inoculated in soy milk at an initial concentration of ≈5 log CFU/mL. Inoculated and control (non-inoculated) soy milk samples were submitted to three types of treatments using a tubular annular thin film short-wave ultraviolet (UV-C) reactor with 1 mm of layer thickness. Treatments applied depended on the flow rate and the number of entries to the reactor, with UV-C doses ranging from 20 to 160 J/mL. The number of entries into the reactor tube (NET) was established as the most determining parameter for the efficiency of the UV-C treatments. Conidiospores of <i>A. niger</i> were reported as the most resistant, followed by <i>B. subtilis</i> spores, while vegetative cells were the most sensible to UV-C, with <i>Listeria monocytogenes</i> being more sensible than <i>Escherichia coli.</i> Treatments of just 80 J/mL were needed to achieve a 5 log CFU/mL reduction of <i>L. monocytogenes</i> while 160 J/mL was necessary to achieve a similar reduction for <i>A. niger</i> spores.https://www.mdpi.com/2304-8158/12/20/3813<i>Listeria monocytogenes</i><i>Escherichia coli</i><i>Bacillus subtilis</i><i>Aspergillus niger</i>soy milkshort-wave ultraviolet (UV-C) |
| spellingShingle | María Martínez-García Jezer N. Sauceda-Gálvez Idoia Codina-Torrella María Manuela Hernández-Herrero Ramón Gervilla Artur X. Roig-Sagués Drastic Microbial Count Reduction in Soy Milk Using Continuous Short-Wave Ultraviolet Treatments in a Tubular Annular Thin Film UV-C Reactor Foods <i>Listeria monocytogenes</i> <i>Escherichia coli</i> <i>Bacillus subtilis</i> <i>Aspergillus niger</i> soy milk short-wave ultraviolet (UV-C) |
| title | Drastic Microbial Count Reduction in Soy Milk Using Continuous Short-Wave Ultraviolet Treatments in a Tubular Annular Thin Film UV-C Reactor |
| title_full | Drastic Microbial Count Reduction in Soy Milk Using Continuous Short-Wave Ultraviolet Treatments in a Tubular Annular Thin Film UV-C Reactor |
| title_fullStr | Drastic Microbial Count Reduction in Soy Milk Using Continuous Short-Wave Ultraviolet Treatments in a Tubular Annular Thin Film UV-C Reactor |
| title_full_unstemmed | Drastic Microbial Count Reduction in Soy Milk Using Continuous Short-Wave Ultraviolet Treatments in a Tubular Annular Thin Film UV-C Reactor |
| title_short | Drastic Microbial Count Reduction in Soy Milk Using Continuous Short-Wave Ultraviolet Treatments in a Tubular Annular Thin Film UV-C Reactor |
| title_sort | drastic microbial count reduction in soy milk using continuous short wave ultraviolet treatments in a tubular annular thin film uv c reactor |
| topic | <i>Listeria monocytogenes</i> <i>Escherichia coli</i> <i>Bacillus subtilis</i> <i>Aspergillus niger</i> soy milk short-wave ultraviolet (UV-C) |
| url | https://www.mdpi.com/2304-8158/12/20/3813 |
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