比色法
对苯二酚
化学
丁基羟基甲苯
没食子酸丙酯
抗氧化剂
氧化还原
抗氧化能力
色谱法
食品添加剂
丁基羟基苯甲醚
食品科学
有机化学
作者
Yuling Li,Xiaotong Wu,Zixuan Wu,Mingmin Zhong,Xiaoping Su,Youai Ye,Yan Liu,Lei Tan,Yong Liang
出处
期刊:Analytical Methods
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:14 (28): 2754-2760
被引量:4
摘要
The identification of synthetic antioxidants has considerable significance in food safety. Here, we described the development of a colorimetric sensor array for rapid detection of eight antioxidants in food through the redox reaction between CoOOH and antioxidants in the presence of colorimetric signal indicators. The CoOOH nanoflakes exhibited high catalytic oxidation activity and can independently catalyze oxidation signal indicators showing different colors. The color reaction was inhibited to different degrees in the presence of antioxidants, which resulted in distinct signal response patterns for their discrimination. The method showed good linearity in the range from 50 to 1000 nM for butylated hydroxytoluene (BHT), butylhydroxyanisole (BHA), propyl gallate (PG) and tert-butyl hydroquinone (TBHQ). Moreover, different proportions of antioxidants were located in the middle pattern of each single antioxidant, and showed certain linear relationships among different concentration ratios. Finally, the proposed colorimetric sensor array was used for practical applications where TBHQ and BHT were detected in biscuits and sausages, and BHA and PG were detected in fried pork kebabs, respectively. The results were further confirmed by high-performance liquid chromatography, which demonstrated the great potential of the colorimetry sensor array for practical applications.
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