基于表面增强拉曼光谱的六种常见乳酸细菌的快速定性鉴定和应用
Huihui Zhi1, Shijie Liu1, Yueyu Bai2
1College of Food Science and Technology, Henan Agricultural University, Zhengzhou 450002, PR China; Sauce Braised and Prefabricated Products Modern Production School Enterprise Research and Development Center, Henan Agricultural University, Zhengzhou 450002, PR China.
Journal of microbiological methods
|November 5, 2025
概括
现在可以使用银纳米粒子 (AgNPs) 作为表面增强拉曼光谱 (SERS) 基质,快速识别乳酸细菌 (LAB). 这种方法在区分六种LAB菌株时实现了100%的准确性.
科学领域:
- 微生物学 微生物学
- 分析化学 分析化学
- 纳米技术纳米技术
背景情况:
- 乳酸细菌 (LAB) 在食品发酵和肠道健康方面至关重要.
- 准确和快速识别LAB对于质量控制和研究至关重要.
研究的目的:
- 开发一种快速准确的方法来识别和检测不同的乳酸细菌属和物种.
- 评估银纳米颗粒 (AgNPs) 作为表面增强拉曼光谱 (SERS) 基质的实验室分析的有效性.
主要方法:
- 选择了六种代表性的LAB菌株:植物性乳杆菌,气球性乳杆菌,糖果性乳杆菌,百科菌 pentosaceus,乳杆菌 streptococcus和乳杆菌 lactis.
- 准备的银纳米粒子 (AgNPs) 用作SERS基材.
- 分析了LAB菌株的SERS光谱,并使用主要成分分析 (PCA) 和线性差异分析 (LDA) 构建了分类和识别模型.
主要成果:
- 作为SERS基质,AgNP表现出良好的信号增强和可重现性 (RSD<6%).
- 在六种LAB菌株中观察到明显的SERS光谱差异.
- 该PCA和LDA模型在分类和识别不同类型的LAB方面实现了100%的准确性.
结论:
- 银纳米粒子与SERS结合,为乳酸细菌的快速定性鉴定提供了强大的工具.
- 该技术为各种应用中高效的微生物检测和表征提供了潜在的解决方案.
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