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前沿研究 | 南京工业大学化学与分子工程学院:铂/金修饰铁氮碳纳米酶传感器阵列用于茶多酚单体识别

  • 2026-07-03 18:40:55
前沿研究 | 南京工业大学化学与分子工程学院:铂/金修饰铁氮碳纳米酶传感器阵列用于茶多酚单体识别

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前沿研究 | 南京工业大学化学与分子工程学院:铂/金修饰铁氮碳纳米酶传感器阵列用于茶多酚单体识别

Food Chemistry

Science & Technology

近日,南京工业大学Huiying Zhou等人在Food Chemistry期刊上发表题为“Pt/Au-decorated Fe-N-C nanozyme sensor array for discrimination of tea polyphenol monomers”学术论文。

研究成果

想一眼分清茶叶里的EGCG、ECG、EGC、EC 这四种“营养亲兄弟”?这篇研究造出了纳米级“茶多酚指纹识别仪”!传统仪器又大又贵,还很难区分结构超像的儿茶素单体。团队用铁氮碳纳米花“长”上铂或金纳米颗粒,做出三种超强类过氧化物酶,搭成三通道比色传感器阵列。原理超简单:四种茶多酚的抗氧化能力不一样,对纳米酶催化显色的抑制程度也不同,颜色一变,手机拍个RGB照片,用线性判别分析一秒认出是谁。不管是纯品、二元混合液,还是统一、康师傅、东方树叶等市售绿茶饮料,都能精准区分开,灵敏度达到0.01微摩尔。这相当于给茶叶质检做了个便携“电子舌”,不用大型仪器、不用复杂前处理,现场快速识别茶多酚组成,直接给茶叶品质、饮料真伪、原料溯源装上“火眼金睛”。

文献解读

摘要

茶多酚单体的组成与含量直接影响茶饮料风味与品质,但其结构相似性阻碍了有效识别。本研究通过在铁氮掺杂碳微花(Fe-N-C MFs)上原位还原贵金属纳米颗粒(铂或金纳米颗粒),合成一种具有高类过氧化物酶活性的新型复合纳米材料。基于四种茶多酚单体差异显著的催化与抑制特性,构建三通道比色传感器阵列用于识别茶多酚单体。该阵列进一步与便携式智能手机RGB检测平台集成,并成功利用特征茶多酚谱图区分市售绿茶饮料,展现出纳米酶在食品分析中的实际应用潜力。

关键词

铂/金纳米颗粒;铁氮碳;类过氧化物酶活性;比色传感器阵列;茶多酚单体;茶饮料

研究亮点

1、首次构建Pt/Au@Fe-N-C三通道纳米酶阵列,实现EGCG、ECG、EGC、EC四种茶多酚单体高分辨识别。

2、铂修饰铁氮碳复合材料表现出最优类过氧化物酶活性,催化效率显著提升。

3、建立智能手机RGB可视化检测方法,实现便携、快速、现场判别。

4、成功应用于市售茶饮料识别,抗干扰强、适用复杂基质。

图文赏析

结论

本研究开发了基于铁氮碳纳米酶及其金 / 铂复合材料(Fe-N-C MFs、Au NPs/Fe-N-C MFs、Pt NPs/Fe-N-C MFs)的比色传感器阵列,实现茶多酚单体的高分辨识别。该阵列利用类过氧化物酶活性,在绿茶饮料等复杂基质中仍能有效区分目标物,并可成功识别与区分不同种类市售茶饮料,在茶饮料品质监测与评价中具备重要应用潜力,为茶叶产业提供快速、低成本、高效的识别策略。结合RGB视觉分析,系统实现多通道快速检测与实际样品适配。本研究为茶多酚监测提供经济高效的纳米酶检测平台,推动多功能纳米复合材料在食品生物传感与质量控制中的设计与应用。

参考文献

https://doi.org/10.1016/j.foodchem.2026.148056

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  1. CONNECT:[ UseTime:0.000572s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000732s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000319s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000293s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000565s ]
  6. SELECT * FROM `set` [ RunTime:0.000249s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000603s ]
  8. SELECT * FROM `article` WHERE `id` = 581877 LIMIT 1 [ RunTime:0.001074s ]
  9. UPDATE `article` SET `lasttime` = 1783285475 WHERE `id` = 581877 [ RunTime:0.008929s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000349s ]
  11. SELECT * FROM `article` WHERE `id` < 581877 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000536s ]
  12. SELECT * FROM `article` WHERE `id` > 581877 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000670s ]
  13. SELECT * FROM `article` WHERE `id` < 581877 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.011814s ]
  14. SELECT * FROM `article` WHERE `id` < 581877 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.033108s ]
  15. SELECT * FROM `article` WHERE `id` < 581877 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001017s ]
0.131272s