便携式生物传感器用于量化检测肉类改,基于介导的氨酸单管RPA/SCas12a放大策略
1College of New Energy Materials and Chemistry, Leshan Normal University, Leshan, Sichuan, 614000, People's Republic of China.
Analytical and bioanalytical chemistry
|January 27, 2026
概括
一种新的便携式测定方法可以准确地检测食物中的猪DNA. 该方法使用个人血糖计,具有新的RPA/Cas12a反应,用于快速测试肉的真实性.
科学领域:
- 食品科学 食品科学 食品科学
- 生物技术是生物技术.
- 分析化学 分析化学
背景情况:
- 肉类改引发了大量的消费者,健康和宗教问题.
- 准确和快速的检测方法对于确保肉制品的真实性至关重要.
- 现有的方法可能缺乏广泛应用所需的速度,灵敏度或可移植性.
研究的目的:
- 开发一种快速,灵敏和便携式的测试方法,用于识别食品中的猪DNA.
- 将个人血糖计 (PGM) 与复合聚合酶放大 (RPA) 和Cas12a核酶系统集成.
- 建立肉类真实性测试的定量检测方法.
主要方法:
- 开发了一种氨酸介导的一RPA/Cas12a试验 (hRPA/SCas12a-PGM).
- 在目标DNA检测时利用Cas12a的DNase活动来切割糖酶标记的DNA探针.
- 量化释放的糖糖酶活性通过糖糖的水解,用PGM测量.
主要成果:
- 通过hRPA/SCas12a-PGM测定,显示出一个宽的动态范围 (10pg/μL到100ng/μL).
- 猪DNA的低检测极限为10 pg/μL.
- 呈现出高特异性,将猪肉与其他非目标肉样品区分开来.
结论:
- 集成的hRPA/SCas12a-PGM系统为现场部署的肉类真实性测试提供了强大的解决方案.
- 这种测试提供了一种定量和敏感的猪肉识别方法.
- 这项技术在加强食品安全监督和监管执法方面具有重大潜力.
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