使用近红外光谱仪在土玉米中快速检测亚毒素
Sylviane Bailly1, Béatrice Orlando2, Jean Brustel3
1Mycoscopia, 3 rue Jean Monnet, 31470 Fonsorbes, France.
Toxins
|September 27, 2024
概括
接近红外光谱 (NIRS) 可以有效地对玉米进行亚亚毒素污染的分类,区分欧盟法规以上或以下的水平. 虽然NIRS不准确量化,但它为快速食品安全查提供了卓越的区分精度.
科学领域:
- 农业科学 农业科学
- 食品科学 食品科学 食品科学
- 分析化学 分析化学
背景情况:
- 非洲毒素是致癌性菌毒素,污染了玉米等作物,需要严格的监管限制 (μg/kg).
- 目前用于检测青毒素的分析方法 (例如HPLC-MS) 是耗时的,因此在收获时进行快速选对于食品安全和经济原因至关重要.
研究的目的:
- 评估近红外光谱 (NIRS) 作为一种快速的现场方法,用于根据欧盟法规相对于黄毒素污染水平对玉米样品进行分类.
- 与HPLC-MS相比,评估NIRS在玉米中检测青毒素的准确性和局限性.
主要方法:
- 使用高性能液态染色学-质谱学 (HPLC-MS) 分析了在3年内采集的500多个玉米样本.
- 使用近红外光谱学 (NIRS) 开发和验证分类模型,采用二级主要组件分析-区分分析 (PCA-DA) 方法.
- 将NIRS分类结果与HPLC-MS参考数据进行比较.
主要成果:
- 分析的玉米样本中,只有7%的玉米样本显示出亚黄毒素污染,但有些超出了欧盟监管门.
- 在分类样品时,NIRS表现出卓越的准确性,分类样品低于或高于欧盟的亚毒素法规 (97.4%的亚毒素B1,100%的亚毒素总量).
- 发现NIRS不足以准确量化青素,但在歧视方面非常有效.
结论:
- NIRS是一个有前途的工具,用于快速,高精度选玉米批次的亚拉托克辛污染,有助于在收获时快速识别不合格的批次.
- 这种方法支持监管合规,并减少受污染作物的经济影响.
- 在食品供应链中,NIRS提供了一种有价值的补充传统分析的方法,用于对亚毒素进行管理.
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