对六种乳酸细菌实时PCR分析的开发和初步评估
Shao-Ji Li1, Biyan Cui2, Wenhua Li3
1Department of Food Quality and Safety, School of Engineering, Guangzhou College of Technology and Business, Guangzhou, China. lsjsenwuingen@hotmail.com.
Scientific reports
|January 24, 2026
概括
针对六种关键乳酸细菌 (LAB) 菌株开发了新的实时PCR测定方法,这些菌株对食品工业至关重要. 这些高特异性和高效性测试表明,在食品中可靠地检测和定量细菌的潜力.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 食品科学 食品科学 食品科学
背景情况:
- 准确识别和量化乳酸细菌 (LAB) 对于监测发酵过程和确保食品质量和安全至关重要.
- 现有的分子方法可能对某些与食品工业相关的LAB物种缺乏特异性或效率.
研究的目的:
- 开发和初步评估六种特定的LAB物种的新型实时PCR测定方法:Ligilactobacillus agilis,Limosilactobacillus fermentum,Lactobacillus johnsonii,Ligilactobacillus salivarius,Pediococcus pentosaceus和Weissella cibaria. 这些新型实时PCR测定方法包括:
- 通过评估它们的包容性,特异性,效率和精度,确保这些测试适用于食品工业.
主要方法:
- 设计特定物种的原料/探针集,针对6个LAB中的每一个保护的基因组区域.
- 优化起料/探针特性,包括长度,化温度 (Tm),GC含量和片长度.
- 使用BLAST进行in silico分析以确认序列保存和特异性.
- 测试对包括性,特异性,放大效率和精度进行初步实验验证.
主要成果:
- 所有开发的实时PCR测定都表现出高度的包容性,对他们的目标LAB物种产生了积极的结果.
- 证实了优异的特异性,在测试的非目标细菌物种中没有观察到放大.
- 测试显示了高放大效率 (95100%) 和精度 (RSD <2%),表明可靠的性能.
结论:
- 新开发的实时PCR测定对目标LAB具有高度包容性,具体性,效率和精确性.
- 这些测定对在食品工业应用中可靠检测和定量特定的LAB具有显著的前景.
- 在广泛的工业实施之前,建议进行进一步的全面验证.
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