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Q1 Environmental Science

Toxicology Reports Pub Date : 2024-11-22 eCollection Date: 2024-12-01 DOI:10.1016/j.toxrep.2024.101824

Hatice Yuncu, Hayrunnisa Nadaroglu, Ebru Bozkurt

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引用次数: 0

摘要

本研究以榛子皮（HH）废料为原料，采用热分解法合成了具有显著稳定性、水溶性和生物相容性的绿色荧光碳量子点（CQDs）。紫外可见光谱和荧光光谱（PL）表征了合成 HH-CQDs 的光学性质，透射电子显微镜（TEM）、傅立叶变换红外光谱（FT-IR）、X 射线衍射（XRD）和 X 射线光电子能谱（XPS）等多种技术表征了其结构性质。TEM 图像显示，HH-CQDs 呈球形，直径在 2 到 10 纳米之间。经测量，这些 CQDs 的荧光量子产率为 0.04。此外，利用荧光共振能量转移（FRET）机制，CQDs 能非常有效地发现黄曲霉毒素 B1（AFB1），并在 451 纳米波长处出现明显的荧光发射峰。在不同的 pH 值条件下，对 CQDs 的光致发光特性进行了评估，结果表明，在 pH 值为 9-10 时，CQDs 会发生蓝移并增加荧光强度，这表明它们有可能用于 pH 值敏感的传感器应用中。这项研究证明了使用 HH-CQDs 对 AFB1 的选择性和灵敏度检测，在 25-250 ppm 的范围内，荧光强度和 AFB1 浓度之间具有很强的线性关系（R² = 0.9936），并且在实际食品样品中具有很高的准确性，包括玉米中的 81.56%、牛奶中的 98.64%和花生中的 95.73%。这种既环保又经济实惠的合成方法为利用废料创造有价值的分析工具来检测食品样品中的 AFB1 提供了一种很有前景的替代方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Eco-friendly synthesis of Carbon Quantum Dots (CQDs) from hazelnut husk for sensitive Aflatoxin B1 (AFB1) detection.

In this study, green fluorescent carbon quantum dots (CQDs) with remarkable stability, water solubility, and biocompatibility were synthesized from hazelnut husk (HH) waste material using a novel approach by the pyrolysis method. The optical properties of the synthesized HH-CQDs were characterized by UV-Vis and fluorescence spectroscopy (PL), while their structural properties were characterized using various techniques, including transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). TEM images revealed that HH-CQDs had a spherical shape with diameters ranging from 2 to 10 nm. The fluorescence quantum yield of these CQDs was measured as 0.04. Furthermore, CQDs were very effective at finding aflatoxin B1 (AFB1) using a fluorescence resonance energy transfer (FRET) mechanism, with a clear fluorescence emission peak seen at 451 nm. The photoluminescent properties of CQDs were evaluated under various pH conditions, showing a blue shift and increased fluorescence intensity at pH 9-10, suggesting their potential use in pH-sensitive sensor applications. This study demonstrates the selective and sensitive detection of AFB1 using HH-CQDs, with a strong linear relationship (R² = 0.9936) between fluorescence intensity and AFB1 concentration in the range of 25-250 ppm, and high accuracy in real food samples, including 81.56 % in corn, 98.64 % in milk, and 95.73 % in peanuts. This eco-friendly and cost-effective synthesis method offers a promising alternative for AFB1 detection in food samples by utilizing waste material to create valuable analytical tools.

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