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从土豆侧流中获得一种新型的pH响应的pyranoflavylium-粉合物的合理合成和表征

Mariana Cunha¹, Ana Sofia Pires¹, Ivo E Sampaio-Dias¹

¹REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua Do Campo Alegre, 687, 4169-007, Porto, Portugal.

|June 12, 2025

概括

研究人员开发了一种pH响应的染料 (PyFlav),并将其与土豆粉结合,创造了一种用于通过颜色变化检测食物腐烂的智能材料.

科学领域:

材料科学材料科学材料科学
生物化学生物化学
分析化学分析化学

背景情况:

自然化合物激发了新的pH响应性染料.
来自土豆行业副流的粉提供了一个可持续的材料来源.
开发智能标签来监测食品腐烂是非常重要的.

研究的目的:

合成和描述一个响应pH的pyranoflavylium染料 (PyFlav).
将PyFlav染料与化学功能化的土豆粉结合起来.
评估粉-PyFlav结合物的潜力,用于智能色度测量食品腐烂标签.

主要方法:

使用LC-DAD/ESI-MS,NMR和UV-VIS光谱学合成PyFlav染料及其表征.
马粉的氧化和通过希夫基反应与PyFlav染料的共价结合.
通过FTIR-ATR光谱检测,确认成功的功能化和中微键形成.

主要成果:

PyFlav染料表现出两个酸性常数:pK_a1 = 5.19 ± 0.03 和pK_a2 = 9.27 ± 0.22.
通过FTIR-ATR证实了PyFlav染料与氧化土豆粉的成功结合,显示出特有的伊米因键.
由此产生的粉-PyFlav合物对pH有反应.

结论:

一种新的pH反应性染料 (PyFlav) 被合成并成功与土豆粉结合.
粉-PyFlav结合物显示出创造pH响应膜和膜的潜力.
这种材料可以用作智能色度标签,以有效监测食品腐烂.

关键词:

化学平衡化学平衡化学平衡在FTIR光谱学中使用.在 LC-DAD/ESI-MS 中使用.皮拉诺弗拉维染料是一种染料.粉结合的结合方式响应pH的生物材料

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