title: [Determination of curcumin in urine by capillary electrophoresis].
abstract: The major component of the plant curcuma longa (a widely cultivated tropical plant in Asia and Central America) is curcumin. Curcumin has been reported to have very strong anti-inflammatory, anti-carcinogenic, anti-oxidant, antiallergic, anti-bacterial, and anti-tumor activities. Little is known about the absorption, distribution, and metabolism of curcumin in human beings. The first step in in vivo physiological and pharmacokinetic studies is to develop a method to measure curcumin in body fluid. A rapid capillary electrophoretic (CE) method with diode array detection was established for the determination of curcumin in human urine. It could be rapidly determined within 2.5 min. The optimized experimental conditions were as follows: 15 mmol/L Na2B4O7 as buffer, applied voltage 20 kV, temperature 25 degrees C and detection wavelength 262 nm. The method has been validated and shows good performance with respect to selectivity, reproducibility and limit of detection. Curcumin had good linearity in the range of 10 - 300 mg/L, and the recoveries of curcumin added in urine were more than 96.3% with relative standard deviations (RSDs) less than 2.3%. The method is sensitive, fast and accurate and can be used to determine curcumin in urine.
authors.affiliation: National Chromatographic R. & A. Center, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116011, China.
authors.forename: Kailong
authors.initials: K
authors.lastname: Yuan
authors.forename: Qianfeng
authors.initials: Q
authors.lastname: Weng
authors.forename: Hongying
authors.initials: H
authors.lastname: Zhang
authors.forename: Jianhui
authors.initials: J
authors.lastname: Xiong
authors.forename: Jun
authors.initials: J
authors.lastname: Yang
authors.forename: Guowang
authors.initials: G
authors.lastname: Xu
mesh_terms: D030024:Curcuma / Q000737:chemistry; D003474:Curcumin / Q000032:analysis*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D019075:Electrophoresis, Capillary; D006801:Humans; D012680:Sensitivity and Specificity
chemical_list: D004365:Drugs, Chinese Herbal; D003474:Curcumin