Institute of Organic and Polymeric Materials, National Taipei University of Technology, No. 1, Section 3 Zhongxiao East Road Taipei 106, Taiwan, ROC.
Institute of Organic and Polymeric Materials, National Taipei University of Technology, No. 1, Section 3 Zhongxiao East Road Taipei 106, Taiwan, ROC.
Food Chem. 2022 May 30;377:131867. doi: 10.1016/j.foodchem.2021.131867. Epub 2021 Dec 16.
It is pivotal to precisely detect food preservatives to ascertain food quality and safety. In this work, we report the sensitive electrochemical detection of widely used cytotoxic food preservative tert-butylhydroquinone (TBHQ). A novel nanocomposite was sonochemically prepared by embedding ternary metal oxide (TMO) comprising ZnO, CuO, and MgO in β-cyclodextrin (β-CD) functionalized carbon black (CB). The properties of the prepared nanocomposite were evaluated by employing multiple characterization methods. The nanocomposite fabricated on a screen printed carbon electrode exhibited exceptional electrocatalytic activity towards TBHQ detection, evident from the resultant very low detection limit of 1 nM and high sensitivity of 22.67 μA μM cm. Moreover, the developed TBHQ sensor evinced all the important traits of a good electrochemical sensor including excellent selectivity, stability, reproducibility, and repeatability. Furthermore, for validating practical feasibility of TBHQ detection, we successfully determined this food additive in edible oils.
准确检测食品防腐剂对于确保食品质量和安全至关重要。在这项工作中，我们报告了对广泛使用的细胞毒性食品防腐剂叔丁基对苯二酚 (TBHQ) 的敏感电化学检测。通过将包含 ZnO、CuO 和 MgO 的三元金属氧化物 (TMO) 嵌入 β-环糊精 (β-CD) 功能化炭黑 (CB) 中，通过超声化学法制备了一种新型纳米复合材料。采用多种表征方法对制备的纳米复合材料进行了评估。在丝网印刷碳电极上制备的纳米复合材料对 TBHQ 的检测表现出出色的电催化活性，其检测限低至 1 nM，灵敏度高达 22.67 μA μM cm。此外，所开发的 TBHQ 传感器表现出电化学传感器的所有重要特征，包括出色的选择性、稳定性、重现性和可重复性。此外，为了验证 TBHQ 检测的实际可行性，我们成功地在食用油中测定了这种食品添加剂。
