Bactericidal efficacy of UV activated TiO2 nanoparticles against Gram-positive and Gram-negative bacteria on suspension
Two different TiO2 nanoparticles, NM101 and NM105, were evaluated against a range of Gram-positive (Staphylococcus aureus, Bacillus cereus, Lactobacillus casei, Lactobacillus bulgaricus, Lactobacillus acidophilus and Lactobacillus lactis) and Gram-negative (Salmonella enterica var. Enteridis and Esc...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019-01-01
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| Series: | CyTA - Journal of Food |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/19476337.2019.1590461 |
| _version_ | 1818511705589678080 |
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| author | Carolina Ripolles-Avila Maria Martinez-Garcia Anne-Sophie Hascoët José Juan Rodríguez-Jerez |
| author_facet | Carolina Ripolles-Avila Maria Martinez-Garcia Anne-Sophie Hascoët José Juan Rodríguez-Jerez |
| author_sort | Carolina Ripolles-Avila |
| collection | DOAJ |
| description | Two different TiO2 nanoparticles, NM101 and NM105, were evaluated against a range of Gram-positive (Staphylococcus aureus, Bacillus cereus, Lactobacillus casei, Lactobacillus bulgaricus, Lactobacillus acidophilus and Lactobacillus lactis) and Gram-negative (Salmonella enterica var. Enteridis and Escherichia coli) bacteria. Both NM101 and NM105 TiO2 nanoparticles (UV-exposed or none) had a significant antibacterial activity when the concentration of TiO2 suspension was 100 µg mL−1. The activation of the TiO2 NPs led, in all cases, to a shift in the growth curve, revealing lower counts as the concentration increased. E. coli was the most significantly affected pathogen by both TiO2 nanoparticles reaching among 2–3 log CFU.mL−1 reduction. In addition, in the case of the probiotic bacteria, NM105 TiO2 nanoparticles had similar effects as the bacterial density was reduced by 2–3 log CFU.mL−1. These results may be applied as a potent technology to be included in the formulation of new disinfectants. |
| first_indexed | 2024-12-10T23:36:40Z |
| format | Article |
| id | doaj.art-ba62a0b953bb417dae0b4ccfd829b3b2 |
| institution | Directory Open Access Journal |
| issn | 1947-6337 1947-6345 |
| language | English |
| last_indexed | 2024-12-10T23:36:40Z |
| publishDate | 2019-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | CyTA - Journal of Food |
| spelling | doaj.art-ba62a0b953bb417dae0b4ccfd829b3b22022-12-22T01:29:10ZengTaylor & Francis GroupCyTA - Journal of Food1947-63371947-63452019-01-0117140841810.1080/19476337.2019.15904611590461Bactericidal efficacy of UV activated TiO2 nanoparticles against Gram-positive and Gram-negative bacteria on suspensionCarolina Ripolles-Avila0Maria Martinez-Garcia1Anne-Sophie Hascoët2José Juan Rodríguez-Jerez3Universitat Autònoma de BarcelonaUniversitat Autònoma de BarcelonaUniversitat Autònoma de BarcelonaUniversitat Autònoma de BarcelonaTwo different TiO2 nanoparticles, NM101 and NM105, were evaluated against a range of Gram-positive (Staphylococcus aureus, Bacillus cereus, Lactobacillus casei, Lactobacillus bulgaricus, Lactobacillus acidophilus and Lactobacillus lactis) and Gram-negative (Salmonella enterica var. Enteridis and Escherichia coli) bacteria. Both NM101 and NM105 TiO2 nanoparticles (UV-exposed or none) had a significant antibacterial activity when the concentration of TiO2 suspension was 100 µg mL−1. The activation of the TiO2 NPs led, in all cases, to a shift in the growth curve, revealing lower counts as the concentration increased. E. coli was the most significantly affected pathogen by both TiO2 nanoparticles reaching among 2–3 log CFU.mL−1 reduction. In addition, in the case of the probiotic bacteria, NM105 TiO2 nanoparticles had similar effects as the bacterial density was reduced by 2–3 log CFU.mL−1. These results may be applied as a potent technology to be included in the formulation of new disinfectants.http://dx.doi.org/10.1080/19476337.2019.1590461tio2nanoparticlesphotocatalytic disinfectionuvfood hygiene |
| spellingShingle | Carolina Ripolles-Avila Maria Martinez-Garcia Anne-Sophie Hascoët José Juan Rodríguez-Jerez Bactericidal efficacy of UV activated TiO2 nanoparticles against Gram-positive and Gram-negative bacteria on suspension CyTA - Journal of Food tio2 nanoparticles photocatalytic disinfection uv food hygiene |
| title | Bactericidal efficacy of UV activated TiO2 nanoparticles against Gram-positive and Gram-negative bacteria on suspension |
| title_full | Bactericidal efficacy of UV activated TiO2 nanoparticles against Gram-positive and Gram-negative bacteria on suspension |
| title_fullStr | Bactericidal efficacy of UV activated TiO2 nanoparticles against Gram-positive and Gram-negative bacteria on suspension |
| title_full_unstemmed | Bactericidal efficacy of UV activated TiO2 nanoparticles against Gram-positive and Gram-negative bacteria on suspension |
| title_short | Bactericidal efficacy of UV activated TiO2 nanoparticles against Gram-positive and Gram-negative bacteria on suspension |
| title_sort | bactericidal efficacy of uv activated tio2 nanoparticles against gram positive and gram negative bacteria on suspension |
| topic | tio2 nanoparticles photocatalytic disinfection uv food hygiene |
| url | http://dx.doi.org/10.1080/19476337.2019.1590461 |
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