用于食品安全的 MOF 传感器：超低检测富含蛋白质的食物中的腐胺和尸胺,Journal of Materials Chemistry C

当前位置： X-MOL 学术 › J. Mater. Chem. C › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

用于食品安全的 MOF 传感器：超低检测富含蛋白质的食物中的腐胺和尸胺
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2022-01-21 , DOI: 10.1039/d1tc05422h
T. Leelasree ₁ , Himanshu Aggarwal ₁

Affiliation

在这里，我们探索了用于实时检测食物腐败指标的 MOF，例如鱼和奶酪等富含蛋白质的食物中的腐胺和尸胺。奶酪和鱼等富含蛋白质的食物中存在的腐胺和尸胺等生物胺 (BA) 是细胞正常功能所需的少量重要胺化合物。然而，食物中含有大量这些物质表明食物变质，食用这些食物会导致人体细胞毒性和其他严重并发症。非常需要设计能够在低浓度下检测这些食品腐败指示剂的合适材料。金属有机框架（MOF）由于其多孔性和明确的 3D 结构，可以作为生物胺传感的潜在候选者。在此处，已经报道了两种新的基于钴的 MOF，用于使用荧光技术检测富含蛋白质的食物中的腐胺和尸胺。除了腐胺和尸胺外，还研究了各种其他生物胺，如精胺、亚精胺、酪胺和色胺，以检查这些新材料的广泛传感能力。在极低浓度的腐胺和尸胺存在下，两种 MOF 都表现出前所未有的“关闭”荧光行为，淬灭效率超过 90%。在溶液和固态中都可以观察到这种现象。已经对鱼和奶酪样品进行了实时传感实验，这证明了这些 MOF 材料在传感生物胺方面的潜力。还为潜在的检测机制提出了一种似是而非的机制。

"点击查看英文标题和摘要"

MOF sensors for food safety: ultralow detection of putrescine and cadaverine in protein rich foods

Here we explore MOFs for the real-time detection of food spoilage indicators such as putrescine and cadaverine in protein rich foods such as fish and cheese. Biogenic amines (BAs) such as putrescine and cadaverine present in protein rich foods like cheese and fish are an important class of amine compounds required in small amounts for the normal functioning of cells. However, large amounts of these substances in foods indicate food spoilage and consumption of such foods can lead to cytotoxicity and other severe complications in the human body. It is highly desirable to design suitable materials that can detect these food spoilage indicators at low concentrations. Metal–organic frameworks (MOFs) due to their porous nature and well-defined 3D structures can serve as potential candidates for the sensing of biogenic amines. Herein, two new Co-based MOFs have been reported for the detection of putrescine and cadaverine in protein rich foods using the fluorescence technique. In addition to putrescine and cadaverine, various other biogenic amines such as spermine, spermidine, tyramine, and tryptamine have also been studied to check the wide sensing ability of these new materials. Both the MOFs show unprecedented “turn-off” fluorescence behaviour with more than 90% quenching efficiency in the presence of very low concentrations of putrescine and cadaverine. The phenomenon can be observed in both solution and solid states. Real-time sensing experiments with fish and cheese samples have been performed, which demonstrate the potential of these MOF materials in sensing biogenic amines. A plausible mechanism has also been proposed for the underlying detection mechanism.

更新日期：2022-01-21

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南