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快速测试分子认证:通过视觉生物感知来识别橄,向日,大豆,芝麻和玉米DNA的多分析方法
Nikoleta Bellou1, Natalia-Maria Christopoulou1, Panagiota M Kalligosfyri1
1Analytical/Bioanalytical Chemistry & Nanotechnology Research Group, Department of Chemistry, University of Patras, Rio, Patras, 26504, Greece.
Analytica chimica acta
|December 6, 2025
概括
一种新的基于DNA的生物传感器测试允许快速,视觉检测常见种子油改剂. 这种简单,现场部署的方法可以确保产品的真实性和消费者安全,而不需要昂贵的设备.
科学领域:
- 食品科学 食品科学 食品科学
- 分子生物学分子生物学
- 生物传感器技术技术
背景情况:
- 产品认证对于消费者安全至关重要,目前的方法依赖于仪器分析或基于DNA的技术.
- 现有的DNA认证方法往往需要昂贵的设备和专业的专业知识,这限制了它们的现场应用.
- 需要快速,简单和便携的平台来进行分子身份验证,特别是在现场测试中.
研究的目的:
- 开发一种新的,快速的,可在现场部署的方法,用于种子油的多重分子认证.
- 通过创建一个用户友好和具有成本效益的解决方案来解决现有方法的局限性.
- 为了同时检测各种产品中的多种潜在杂质.
主要方法:
- 集成多重常规PCR (聚合酶连锁反应) 与干反应剂条式生物传感器,用于直接视觉识别.
- 同时放大和分化来自五种物种的DNA:橄,向日,大豆,芝麻和玉米.
- 将PCR产品直接应用于生物传感器,从而消除了PCR后处理步骤,如净化或热变.
主要成果:
- 这种新的方法成功地使用单个多重PCR测定方法从五种物种中区分了DNA.
- 干式试剂带生物传感器在15-20分钟内提供可视化结果.
- 该方法精确检测伪造,识别低至5%的芝麻,大豆和向日,10%的玉米在橄油中,测量的变化率低于5%.
结论:
- 集成的多重PCR和生物传感器系统为多重改检测提供了一个简单,便携且低成本的解决方案.
- 现场部署可通过视觉检测实现,消除了昂贵仪器仪表的需要.
- 该方法的广泛适用性使其适用于各种产品的分子真实性评估,提高消费者安全.
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