2018年7月
Influence of ionizing radiation on the antimicrobial activity of the antibiotics sulfamethoxazole and trimethoprim
Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
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- 巻
- 53
- 号
- 開始ページ
- 687
- 終了ページ
- 693
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1080/10934529.2018.1439821
© 2018, © 2018 Taylor & Francis Group, LLC. The response of the antimicrobial compounds sulfamethoxazole (SMX) and trimethoprim (TMP)–individually and in mixtures–to ionizing radiation was investigated using laboratory prepared mixtures and a commercial pharmaceutical formulation. The residual antibacterial activity of the solutions was monitored using Staphylococcus aureus and Escherichia coli test strains. Based on antibacterial activity, SMX was more susceptible to ionizing radiation as compared to TMP. The antibacterial activity of SMX and TMP was completely eliminated at 0.2 kGy and 0.8 kGy, respectively. However, when SMX and TMP were in a mixture, the dose required to eliminate the antibacterial activity was 10 kGy, implying a synergistic antibacterial activity when these are present in mixtures. Only when the antibiotic concentration was below the Minimum Inhibitory Concentration of TMP (i.e., 2 µmol dm–3) did the antibacterial activity of the SMX and TMP mixture disappear. These results imply that the synergistic antimicrobial activity of antimicrobial compounds in pharmaceutical waste streams is a strong possibility. Therefore, antimicrobial activity assays should be included when evaluating the use of ionizing radiation technology for the remediation of pharmaceutical or municipal waste streams.
- リンク情報
- ID情報
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- DOI : 10.1080/10934529.2018.1439821
- ISSN : 1093-4529
- PubMed ID : 29485359
- SCOPUS ID : 85042911706