Potentiometric Determination of Total Polyphenols in Green Tea Based on Complexation-Reaction-Induced Response

	Potentiometric Determination of Total Polyphenols in Green Tea Based on Complexation-Reaction-Induced Response
	Kou, Lijuan 1,2,3; Liang, Rongning1,2 ; Qin, Wei1,2 ; Liang, RN (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China. rnliang@yic.ac.cn
发表期刊	INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
ISSN	1452-3981
	2014-06-01
卷号	9 期号:6 页码:3190-3198
关键词	cu2+-selective Polymer Membrane Electrode Complexation Reaction Polyphenols Determination Green Tea
产权排序	[Kou, Lijuan; Liang, Rongning; Qin, Wei] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China; [Kou, Lijuan; Liang, Rongning; Qin, Wei] YICCAS, Shandong Prov Key Lab Coastal Environm Proc, Yantai, Shandong, Peoples R China; [Kou, Lijuan] Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
作者部门	中科院海岸带环境过程与生态修复重点实验室
英文摘要	A novel potentiometric approach for the determination of total tea polyphenols is described in this paper. The proposed approach is based on the complexation reactions of polyphenols with metal ions (e.g., Cu2+) and the depletion of copper ions is monitored by a solid-contact Cu2+-selective polymer membrane electrode. The potential change induced by the complexation reaction can be used for reliable detection of polyphenols. By using epigallocatechin gallate (EGCG) as a model of tea polyphenols, the potentiometric sensor shows a linear response over the concentration range of 0.01 g/L to 0.1 g/L with a low detection limit of 3.2 mg/L. It has also been found that the detection system is not susceptible to interference by other organic substances associated with polyphenols analysis such as amino acid, organic acid, caffeine and vitamin C at their usual levels in green tea. The practical application of the proposed system has been successfully applied to the determination of polyphenols in real green tea samples.; A novel potentiometric approach for the determination of total tea polyphenols is described in this paper. The proposed approach is based on the complexation reactions of polyphenols with metal ions (e.g., Cu2+) and the depletion of copper ions is monitored by a solid-contact Cu2+-selective polymer membrane electrode. The potential change induced by the complexation reaction can be used for reliable detection of polyphenols. By using epigallocatechin gallate (EGCG) as a model of tea polyphenols, the potentiometric sensor shows a linear response over the concentration range of 0.01 g/L to 0.1 g/L with a low detection limit of 3.2 mg/L. It has also been found that the detection system is not susceptible to interference by other organic substances associated with polyphenols analysis such as amino acid, organic acid, caffeine and vitamin C at their usual levels in green tea. The practical application of the proposed system has been successfully applied to the determination of polyphenols in real green tea samples.
文章类型	Article
资助机构	Electrochemistry
收录类别	SCI
语种	英语
关键词[WOS]	ION-SELECTIVE ELECTRODES ; SOLID-CONTACT ; LIQUID-CHROMATOGRAPHY ; IMPRINTED POLYMER ; DETECTION LIMIT ; MEMBRANE ; SENSOR ; LEVEL ; CATECHINS ; PHENOLS
研究领域[WOS]	Electrochemistry
WOS记录号	WOS:000334493300040
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/8743
专题	中国科学院海岸带环境过程与生态修复重点实验室
通讯作者	Liang, RN (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China. rnliang@yic.ac.cn
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China 2.YICCAS, Shandong Prov Key Lab Coastal Environm Proc, Yantai, Shandong, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Kou, Lijuan,Liang, Rongning,Qin, Wei,et al. Potentiometric Determination of Total Polyphenols in Green Tea Based on Complexation-Reaction-Induced Response[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2014,9(6):3190-3198.
APA	Kou, Lijuan,Liang, Rongning,Qin, Wei,&Liang, RN .(2014).Potentiometric Determination of Total Polyphenols in Green Tea Based on Complexation-Reaction-Induced Response.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,9(6),3190-3198.
MLA	Kou, Lijuan,et al."Potentiometric Determination of Total Polyphenols in Green Tea Based on Complexation-Reaction-Induced Response".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 9.6(2014):3190-3198.

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