New combination between chitosan, single walled carbon nanotubes and neodymium(III) oxide found to be useful in the electrochemical determination of rutin in the presence of morin and quercetin,Analytical Methods

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New combination between chitosan, single walled carbon nanotubes and neodymium(III) oxide found to be useful in the electrochemical determination of rutin in the presence of morin and quercetin
Analytical Methods ( IF 2.7 ) Pub Date : 2017-11-01 00:00:00 , DOI: 10.1039/c7ay02171b
Jorge A. Calderón _{1,

2,

3,

4,

5} , María Cardozo-Pérez _{5,

6,

7,

8} , Alfredo Torres-Benítez _{5,

6,

7,

8} , Olimpo García-Beltrán _{5,

6,

7,

8} , Edgar Nagles _{5,

6,

7,

8}

Affiliation

A glassy carbon electrode surface was modified with a new combination of chitosan, single walled carbon nanotubes (SWCNT) and neodymium(III) oxide (NdOX) and was found to be effective in the detection of rutin (RU), a natural antioxidant. The modified electrode displayed high activity toward the oxidation of RU compared to other flavonoids, such as quercetin (Q) and morin (MO). The oxidation peaks of RU, MO and Q were exhibited at +0.53, +0.42 and +0.39 V, respectively. Moreover, anodic peak currents were 37.27, 10.39 and 2.27 μA, respectively. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to characterize the electrode surface, and square wave voltammetry (SWV) was used to quantify RU. The detection limit (3σ/b) was 0.092 μmol L⁻¹, and the RSD was 2.5%. A new sensor was used in the quantification of RU in roasted beans infusion of Coffea arabiga L. and extract of Zamia furfuracea L.f. ex Aiton with satisfactory results.

中文翻译：

发现壳聚糖，单壁碳纳米管和氧化钕（III）之间的新组合可用于在存在rin和槲皮素的情况下电化学测定芦丁

使用壳聚糖，单壁碳纳米管（SWCNT）和氧化钕（III）氧化物（NdOX）的新组合修饰了玻璃状碳电极表面，发现该碳电极表面可有效检测天然抗氧化剂芦丁（RU）。与其他类黄酮（如槲皮素（Q）和香豆素（MO））相比，修饰电极对RU的氧化显示出高活性。RU，MO和Q的氧化峰分别出现在+ 0.53，+ 0.42和+0.39V。此外，阳极峰值电流分别为37.27、10.39和2.27μA。循环伏安法（CV）和电化学阻抗谱（EIS）用于表征电极表面，方波伏安法（SWV）用于定量RU。检出限（3σ / b）为0.092μmolL ^-1，RSD为2.5％。一种新的传感器被用于定量测定阿拉比加咖啡烤豆和Aiton furfuracea Lf ex Aiton提取物中的RU 。

更新日期：2017-11-17

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