一种基于拉曼光谱的水产品质量的快速检测方法已经开发出来,用于识别自由基
Yin Ying1, Xue Ming1, Guizhang Gu2
1College of Food Science and Engineering, Ningbo University, Ningbo 315211, China.
Food chemistry
|December 12, 2025
概括
这项研究使用了表面增强的拉曼散射 (SERS) 和银纳米立方体来检测金枪鱼中的核酸基,提供了一种监测冷鱼质量和退化的敏感方法.
科学领域:
- 分析化学 分析化学
- 食品科学 食品科学 食品科学
- 生物化学 生物化学
背景情况:
- 核酸降解是冷食品质量的指标.
- 为了监测冷海鲜的质量,需要准确而敏感的检测方法.
研究的目的:
- 开发和验证一种表面增强的拉曼散射 (SERS) 方法,结合化学测量,用于检测金枪鱼中的核酸.
- 评估使用SERS来监测冷金枪鱼的DNA降解和整体质量的可行性.
主要方法:
- 使用金探头与表面附着的银纳米立方体 (AgNCs) 进行SERS测量.
- 开发了一种局部最小平方 (PLS) 模型,用于对腺素,关氨酸,胆氨酸,细胞氨酸和 uracil 的定量分析.
- 采用凝电泳来确认DNA降解和高性能液体染色学 (HPLC) 进行比较.
主要成果:
- 与PLS模型相结合的SERS方法在核酸基分析方面表现出高的预测性能 (相关系数>0.9937).
- 在 -18°C保存120天的金枪鱼中观察到DNA降解.
- 对于检测自由核基,SERS被证明比HPLC更灵敏和方便.
- 通过SERS (R2 = 0.9695) 测量的铁酸 (TBA) 含量和自由核基水平之间发现了强烈的正相关性.
结论:
- 结合化学测量的SERS是一种可行的和敏感的技术,用于监测冷金枪鱼的核酸降解.
- 这种方法为冷水产品和其他冷食品的实时质量评估提供了有希望的工具.
- SERS为质量评估提供了一种新,方便和有效的替代传统方法,如HPLC.
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