由Bacillus物种合成的多基酸盐的生产,表征和抗菌活性,用于对抗皮肤病原体
Manal1, Faiqa Munir1, Waseem Safdar1
1Department of Biological Sciences, National University of Medical Sciences Rawalpindi Pakistan tariq.navid@numspak.edu.pk waseem.safdar@numspak.edu.pk saeed.ahmed@numspak.edu.pk +92 51-9270677 +92 333 6488 302.
RSC advances
|September 26, 2025
概括
聚氨酸酸 (PHAs) 提供了一种可持续的替代方案来对抗抗生素耐药性皮肤感染. 这项研究优化了聚-3-基酸盐 (PHB) 的生产,并证实了其强大的抗微生物和抗生物膜活性对关键病原体.
科学领域:
- 生物材料科学 生物材料科学
- 微生物学 微生物学
- 聚合物化学 聚合物化学
背景情况:
- 抗生素耐药性皮肤感染对全球健康构成重大挑战.
- 聚酸酸 (PHAs) 是生物降解的聚合物,具有潜在的生物医学应用.
- 在医疗保健中,PHA为合成材料提供了一个可持续和环保的替代品.
研究的目的:
- 为了优化聚-3-基酸盐 (PHB) 的生产,一种PHA.
- 以其结构和热性质来描述合成的PHB.
- 评估PHB对皮肤病原体的抗微生物和抗生物膜疗效.
主要方法:
- 用于PHB生产优化,采用了直角实验设计.
- 福利埃变换红外光谱法 (FTIR),NMR (H,C),TGA,DSC和XRD被用于表征.
- 通过抑制区,MIC,时间杀死试验和抗生物膜试验 (XTT) 评估了抗菌活性.
主要成果:
- 在优化条件下 (硫酸,葡萄糖,NaCl,化67小时) 产生了46.7%的PHB.
- 鉴定证实PHB的半晶体性质,增强的热稳定性和结构完整性.
- PHB对*黄金葡萄球菌*,*S. epidermidis*和*Candida albicans*表现出显著的抗菌活性,并有效抑制和根除生物膜.
结论:
- 使用*Bacillus megaterium*可以实现优化PHB生产.
- 合成的PHB具有有利的热和结构性质,可用于潜在的生物医学用途.
- PHB显示出强大的潜力,作为一种环保的抗微生物剂,可以对抗抗性皮肤病原体和生物膜.
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