Catechin-Targeted Nano-Enhanced Colorimetric Sensor Array Based on Quantum Dots—Nano Porphyrin for Precise Analysis of Xihu Longjing from Adjacent Origins
Yaqi Liu, Zhenli Cai, Yao Fan, Xingcai Wang, Meixia Wu, Haiyan Fu, Yuanbin She
TL;DR
A new sensor array using nano materials can accurately detect and analyze Xihu Longjing tea to identify adulteration and assess quality.
Contribution
A dual-mode sensor array using nano porphyrins and quantum dots for precise analysis of Xihu Longjing tea authenticity.
Findings
The sensor array can accurately identify different grades and storage times of Xihu Longjing tea.
It can detect low levels of adulteration in the tea samples.
The design enables quantitative evaluation of flavor and antioxidant properties.
Abstract
Aimed at addressing the increasingly serious problem of adulteration in Xihu Longjing, a catechin-targeted nano-enhanced visual and fluorescent dual-mode sensor array was constructed by nano porphyrins and quantum dots (QDs) for the precise analysis of Xihu Longjing from adjacent origins. This sensor array realizes the quantitative analysis of catechin enantiomers in Xihu Longjing through the selective combination of sensing units. It can accurately identify adjacent Xihu Longjing teas with different grades and storage times and can precisely detect samples with a low proportion of adulteration. At the same time, the flavor quality and antioxidant performance of Xihu Longjing tea can also be quantitatively evaluated. The dual-mode sensor array design proposed in this study provides a new idea for detecting minor differences in food authenticity and has significant application value for…
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Taxonomy
TopicsAdvanced Chemical Sensor Technologies · Tea Polyphenols and Effects · Advanced Nanomaterials in Catalysis