通过天然颜料敏感的Cefadroxil光降解过程:机械方面和对抗菌功能的影响
Andrea Sofía Urquiza1, Agustina Reynoso1,2, Macarena Agostina Biondi1,2
1Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina.
概括
这项研究表明,阳光激活的 riboflavin 可以降解抗生素 Cefadroxil,降低其抗菌活性. 这种自然光敏化为从废水中去除Cefadroxil提供了一种有前途的方法.
科学领域:
- 环境化学环境化学
- 摄影化学的使用.
- 环境科学 环境科学
背景情况:
- 塞法德罗西尔是一种抗生素,在废水处理中排放不良,这引起了新兴的环境问题.
- 使用天然颜料和阳光进行光敏化提供了一种环保的降解方法.
研究的目的:
- 为了研究Cefadroxil光降解的机制和动力学.
- 评估黄素和酸作为光敏感剂的作用.
- 评估对Cefadroxil抗菌活性的影响.
主要方法:
- 对Cefadroxil光降解的机理和动力学研究.
- 使用 riboflavin 和 humic 酸 (单独和组合) 的光敏化实验.
- 使用金黄色葡萄球菌的微生物学测定.
主要成果:
- 塞法德罗西尔的光降解被利博弗拉有效地敏感化,具有显著的单片氧参与.
- 降解效率低于单独使用胺酸或与 рибофлавин结合使用,可能是由于自我敏感或光过.
- 在性pH下降解速度增加,并且受到Cefadroxil的阳离子形式的支持.
- 光氧化降低了Cefadroxil对S. aureus的抗菌活性.
结论:
- 利博弗拉的阳光诱导光敏化是一种可行的Cefadroxil降解方法.
- 这一过程降低了抗生素的有效性,可能减轻了抗生素耐药性的发展.
- 了解动力学和影响因素 (pH,敏感剂类型) 对于优化这种环境修复策略至关重要.
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