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<p>A novel microchannel-based chiral sensor leveraging silica nanowires self-assembled with maltosyl-cyclodextrin (SiNWs/G2-β-CD) on glass microchannel (GMC)&#xa0;is reported. This innovative SiNWs/G2-β-CD/GMC sensor achieves ultrasensitive detection of L-tryptophan over a wide linear range (1-10<sup>5</sup> aM) with exceptional selectivity, enabling accurate discrimination in mixtures of tryptophan enantiomers. Its application to milk sample analysis demonstrates high recognition performance and practical reliability. The SiNWs/G2-β-CD/GMC sensor offers a rapid, cost-effective, and highly sensitive platform, holding great promise for dietary monitoring and enantiomeric analyses in complex matrices.</p> Graphical Abstract <p></p>

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Highly sensitive enantiomeric detection of tryptophan using microchannel-based chiral sensors

  • 期刊论文

  • 发表日期：

    2026年3月2日

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  • Yueyue Feng,
  • Shiwei Xu,
  • Guofeng Wang,
  • Liying Huang,
  • Zhongyu Yang,
  • Jiacheng Dong,
  • Yu Zhang,
  • Nannan Liu,
  • Chao Deng,
  • Yajun Wang

摘要

A novel microchannel-based chiral sensor leveraging silica nanowires self-assembled with maltosyl-cyclodextrin (SiNWs/G2-β-CD) on glass microchannel (GMC) is reported. This innovative SiNWs/G2-β-CD/GMC sensor achieves ultrasensitive detection of L-tryptophan over a wide linear range (1-105 aM) with exceptional selectivity, enabling accurate discrimination in mixtures of tryptophan enantiomers. Its application to milk sample analysis demonstrates high recognition performance and practical reliability. The SiNWs/G2-β-CD/GMC sensor offers a rapid, cost-effective, and highly sensitive platform, holding great promise for dietary monitoring and enantiomeric analyses in complex matrices.

Graphical Abstract