葡萄酒
荧光
铜
检出限
PEG比率
聚乙二醇
化学
罗丹明
色谱法
食品科学
有机化学
物理
量子力学
财务
经济
作者
Hui Sun,Qingyu Xu,Chen Xu,Yukun Zhang,Jindong Ai,Mingguang Ren,Keyin Liu,Fangong Kong
出处
期刊:Food Chemistry
[Elsevier]
日期:2023-08-01
卷期号:418: 135994-135994
被引量:20
标识
DOI:10.1016/j.foodchem.2023.135994
摘要
The quality of wine can be affected by excess Cu2+ due to the occurrence of oxidation reactions or precipitation. Therefore, it is essential to use simple and effective testing methods to ensure the Cu2+ content in wine. In this work, we designed and synthesized a rhodamine polymer fluorescent probe (PEG-R). The water solubility of PEG-R was improved by the introduction of polyethylene glycol, which improved the performance and broadened its application in the food field. The PEG-R was characterized by high sensitivity, selectivity and fast response to Cu2+ and was able to complete the response process within 30 s, with approximately 29-fold fluorescence enhancement of the probe after exposure to Cu2+, the limit of detection (LOD) was 1.295 × 10-6 M. The probe can be used for the determination of Cu2+ in living cells, zebrafish, white wine and food products, and it was made into practical gels and test strips.
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