Determination of three phenolic acids in Cimicifugae rhizoma by capillary electrophoresis with a graphene–phenolic resin composite electrode

2019 ◽  
Vol 11 (3) ◽  
pp. 303-308 ◽  
Author(s):  
Hua Mao ◽  
Yan Zhang ◽  
Gang Chen
Keyword(s):  
Capillary Electrophoresis ◽  
Phenolic Acids ◽  
Phenolic Resin ◽  
Composite Electrode ◽  
Resin Composite ◽  
Amperometric Detection

A graphene–phenolic resin composite electrode was fabricated by in situ crosslinking for enhanced amperometric detection of capillary electrophoresis.

Study on Capillary Electrophoresis–Amperometric Detection Profiles from Propolis and its Medicinal Preparations

2013 ◽  
Vol 750-752 ◽  
pp. 1617-1620
Author(s):  
You Yuan Peng
Keyword(s):  
Capillary Electrophoresis ◽  
Phenolic Acids ◽  
Amperometric Detection ◽  
Optimum Conditions ◽  
Active Components ◽  
Resinous Substance ◽  
Medicinal Preparations ◽  
Assay Result ◽  
Pharmacologically Active

Propolis is a resinous substance collected by honeybees from leaf buds and cracks in the bark of various plants, the pharmacologically active components in the propolis are flavonoids and phenolic acids and their esters. A simultaneous determination of flavonoids and phenolic acids from propolis and its medicinal preparations by capillary electrophoresis with electrochemical detection (CE-ED) was reported. Under the optimum conditions, the analytes could be separated in a 100 mmol/l borate buffer (pH=8.7) within 25 min. The response was linear over three orders of magnitude with detection limit (S/N=3) ranging from 1×10-7 g/ml to 5×10-7 g/ml for the analytes. This method has been used for the determination of flavonoids and phenolic acids from propolis and its medicinal preparations, and the assay result was satisfactory.

Determination of Effective Ingredients in Compound Sulfamethoxazole Tablets by Capillary Electrophoresis with Amperometric Detection

2008 ◽  
Vol 36 (3) ◽  
pp. 292-296 ◽  
Author(s):  
Chu Qing-Cui ◽  
Tian Xiu-Hui ◽  
Jiang Lian-Mei ◽  
Zhou Wen-Jun ◽  
Ye Jian-Nong
Keyword(s):  
Capillary Electrophoresis ◽  
Amperometric Detection

Analysis of Synthetic Antioxidant in Food by Capillary Electrophoresis

2011 ◽  
Vol 361-363 ◽  
pp. 1855-1858 ◽  
Author(s):  
Qian Xiang ◽  
Ying Gao
Keyword(s):  
Capillary Electrophoresis ◽  
Amperometric Detection ◽  
Peak Height ◽  
Butylated Hydroxyanisole ◽  
Applied Potential ◽  
Synthetic Antioxidant ◽  
Separation Potential ◽  
Relative Standard ◽  
Capillary Electrophoretic

A capillary electrophoretic assay for determining synthetic antioxidant butylated hydroxyanisole in food has been developed. The extraction with 70% (v/v) methanol quantitatively extracted synthetic antioxidant. The separation was carried out by CZE using phosphate at a separation potential of 18 kV. Amperometric detection was achieved with an applied potential of 0.60 V. A linear relationship between the peak height and the concentration of the analyte was found in the range 1.8-180 µg/mL for BHA, with correlation coefficient of 0.994. The relative standard deviations of migration time and peak height were 0.19 and 5.3 %, respectively. The method developed was successfully applied for the determination of synthetic antioxidant butylated hydroxyanisole in food. Recovery of butylated hydroxyanisole was 93%.

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