聚合物改性已被确立为具有成本效益的,简单,用于克服硼掺杂金刚石(BDD)电极的一些固有缺点的原位方法,它的应用已经扩展到可靠,低成本的环境监测解决方案。本综述的重点是用半导电聚合物作为氧化还原介体来修饰BDD电极。本文报道了3-甲基噻吩修饰的硼掺杂金刚石(BDD/P3MT)传感器的开发,用于电化学测定茶叶样品中的总酚类化合物(TPCs),使用没食子酸(GA)作为标记。GA是一种具有多种生物活性的重要多酚,使其量化至关重要。因此,一个简单的,快,使用电分析方波伏安法(SWV)技术制造了灵敏的GA传感器。传感器采用半导电聚合物,3-甲基噻吩,作为氧化还原介体,提高BDD的灵敏度和选择性。电化学合成用于聚合物沉积,允许更高的纯度和避免溶解度问题。BDD/P3MT传感器具有良好的电化学性能,包括快速的电荷转移和大的电化学面积,能够进行GA检测,检测限为11mg/L。传感器的响应与Folin-Ciocalteu方法测得的TPC相关。在最佳条件下,方波伏安法(SWV)在3-71mg/L的宽线性范围内,峰电流与GA浓度之间具有良好的线性关系。BDD/P3MT传感器精确测量绿茶中的TPC,路易波斯茶,和红茶样品,绿茶表现出最高的TPC水平。结果表明,该修饰的BDD电极具有快速准确检测茶叶中酚类化合物的潜力,对质量控制和抗氧化活性评估有影响。过去十年的大量出版物已经将BDD电极确立为用于定量多酚的强大的BDD传感器。水果,蔬菜,坚果,植物源性饮料,如茶和酒,传统的东方疗法和各种草药营养补充剂含有酚类化学物质。受污染食物摄入的安全问题是全球重大的健康问题,因为食品安全之间存在着至关重要的联系,营养,和粮食安全。众所周知,食用绿茶多酚可促进积极的健康效果。尽管它们有潜在的好处,由于对潜在负面影响的担忧,大量食用这些多酚引发了争论。
Polymer modification has been established as a cost-effective, simple, in situ method for overcoming some of the inherent disadvantages of boron-doped diamond (BDD) electrodes, and its application has been extended to reliable, low-cost environmental monitoring solutions. The present review focuses on modifying BDD electrodes with semi-conductive polymers acting as redox mediators. This article reports on the development of a 3-methyl thiophene-modified boron-doped diamond (BDD/P3MT) sensor for the electrochemical determination of total phenolic compounds (TPCs) in tea samples, using gallic acid (GA) as a marker. GA is a significant polyphenol with various biological activities, making its quantification crucial. Thus, a simple, fast, and sensitive GA sensor was fabricated using the electroanalytical square wave voltammetry (SWV) technique. The sensor utilizes a semi-conductive polymer, 3-methyl thiophene, as a redox mediator to enhance BDD\'s sensitivity and selectivity. Electrochemical synthesis was used for polymer deposition, allowing for greater purity and avoiding solubility problems. The BDD/P3MT sensor exhibits good electrochemical properties, including rapid charge transfer and a large electrochemical area, enabling GA detection with a limit of detection of 11 mg/L. The sensor\'s response was correlated with TPCs measured by the Folin-Ciocalteu method. Square wave voltammetry (SWV) showed a good linear relationship between peak currents and GA concentrations in a wide linear range of 3-71 mg/L under optimal conditions. The BDD/P3MT sensor accurately measured TPCs in green tea, rooibos tea, and black tea samples, with green tea exhibiting the highest TPC levels. The results demonstrate the potential of the modified BDD electrode for the rapid and accurate detection of phenolic compounds in tea, with implications for quality control and antioxidant activity assessments. The prolific publications of the past decade have established BDD electrodes as robust BDD sensors for quantifying polyphenols. Fruits, vegetables, nuts, plant-derived beverages such as tea and wine, traditional Eastern remedies and various herbal nutritional supplements contain phenolic chemicals. The safety concerns of contaminated food intake are significant health concerns worldwide, as there exists a critical nexus between food safety, nutrition, and food security. It has been well established that green tea polyphenol consumption promotes positive health effects. Despite their potential benefits, consuming high amounts of these polyphenols has sparked debate due to concerns over potential negative consequences.