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基于多个DNA条形码的鱼物种识别
Qingqing Hu1, Yingqiu Pan2, Huili Xia2
1College of Life Sciences, China Jiliang University, Hangzhou 310018, China.
Molecules (Basel, Switzerland)
|July 14, 2023
概括
通过DNA条形码,可以有效地识别鱼.
科学领域:
- 分子生物学分子生物学
- 食品的真实性 食品的真实性
- 海洋生物学 海洋生物学
背景情况:
- 鱼的真实性对于消费者信任和市场完整性至关重要.
- DNA 条形码为物种识别提供了一个分子工具.
- 在中国市场,评估鱼子的真实性至关重要.
研究的目的:
- 评估DNA条形码在验证鱼原产地的有效性.
- 通过使用遗传标记来识别鱼样本的母种.
- 为了检测中国鱼子市场的错误标签和改.
主要方法:
- 从21批鱼子中提取DNA.
- 聚合酶链反应 (PCR) 使用通用和设计的原料.
- 线粒体DNA基因 (COI和D环) 的测序和分析.
- 用邻居连接的树枝图进行了植物遗传学分析.
主要成果:
- PCR产品与数据库序列的相似性超过98%.
- 与COI基因相比,D-循环基因提高了与物种间鱼识别的准确性.
- 所有样本都被确定为鱼物种,但33.4%的样本显示标签错误.
- 从非鱼来源的假鱼被排除在外.
结论:
- DNA条形码,特别是使用D-循环基因,适用于鱼子真实性验证.
- 显著的错误标签率凸显了鱼子市场的非法做法.
- 虽然对物种识别有效,但对杂交鱼检测存在局限性.
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