In-line cold column trapping of organic phase in dispersive liquid–liquid microextraction: Enrichment and determination of curcumin in human serum

Safdarian, Mehdi; Hashemi, Payman; Naderlou, Malihe

doi:10.1016/j.chroma.2012.04.059

Cited by 29 publications

(6 citation statements)

References 16 publications

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“…With reference to these findings no pretreatment is needed for urine samples. For plasma samples, as mentioned in previous studies, protein precipitation is required [39][40][41][42][43][44][45]. Omitting this step results in white sedimentation, which reduced the volume of the extraction solvent and, consequently, the extraction efficiency.…”

Section: A U T H O R P R O O Fmentioning

confidence: 99%

Analysis of losartan and carvedilol in urine and plasma samples using a dispersive liquid–liquid microextraction isocratic HPLC–UV method

et al. 2012

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Section: A U T H O R P R O O Fmentioning

confidence: 99%

Analysis of losartan and carvedilol in urine and plasma samples using a dispersive liquid–liquid microextraction isocratic HPLC–UV method

et al. 2012

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“…The proposed method was compared with several published studies based on LPME [21][22][23][24][25][26] and the results were listed in Table S6. As we can see, the present method provides much lower LODs and a higher EF than those of other methods except for DES-DLPME-SFO and DLPME.…”

Section: Comparison Of the Developed Procedures With Other Proceduresmentioning

confidence: 99%

Solvent terminated natural deep eutectic solvent microextraction for concentration of curcuminoids in Curcumae Longae Rhizoma and turmeric tea

Yang

Xie

Chen

et al. 2022

J of Separation Science

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A novel solvent terminated microextraction method based on a natural deep eutectic solvent (L-menthol and lactic acid at a molar ratio of 1:2) coupled with high-performance liquid chromatography was proposed, which was utilized for the separation and enrichment of bisdemethoxycurcumin, demethoxycurcumin and curcumin in Curcumae Longae Rhizoma and turmeric tea. The effects of independent parameters on extraction efficiency were optimized by single-factor analysis. Subsequently, four predominated parameters affecting the extraction procedure, including extractant volume, salt concentration, demulsifier consumption, and demulsification time, were further evaluated by a central composite design. Under the optimized conditions, the linear ranges of calibration curves were 0.005-0.5 μg/mL for bisdemethoxycurcumin, 0.004-0.4 μg/mL for demethoxycurcumin, and 0.0045-0.45 μg/mL for curcumin, respectively. In addition, the developed method provided low detection limits (0.1-0.4 ng/mL) and high enrichment factors . Its intra-day and inter-day precision were carried out by relative standard deviation ranging from 2.2 to 9.2%. Finally, the applicability of this method was assessed by the analysis of Curcumae Longae Rhizoma and turmeric tea samples. The results showed that these samples were detected successfully and the spiked recoveries over the range of 85.3-108.9% with relative standard deviations of 1.6-8.9% were attained, indicating its high relative recoveries with good precision in real sample analysis.

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“…Therefore, to develop a reliable and accurate method for the determination of curcumin is signicant in clinical medicine and pharmacology. 10,11 In the literature, some methods for the determination of curcumin are reported, such as high-performance liquid chromatography (HPLC), [12][13][14] spectrouorimetry, 15,16 and highperformance thin-layer chromatography. 17 Besides, UV-vis spectrophotometric and chemiluminescent dynamic methods 18 were developed for investigating the antioxidant activity of curcumin.…”

Section: Curcuminmentioning

confidence: 99%

The electrochemical characterization of curcumin and its selective detection in Curcuma using a graphene-modified electrode

Yang

et al. 2014

Anal. Methods

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A sensitive voltammetric sensor, a graphene-modified glassy carbon electrode (GR/GCE), for the detection of trace amounts of curcumin is proposed. The GR/GCE was characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrochemical behavior of curcumin at the GR/GCE was investigated by CV and liner sweep voltammetry (LSV). The reaction mechanisms of curcumin on the GR/GCE were also investigated and discussed systematically. In addition, the currents measured by LSV presented a good linear relationship with curcumin concentrations in the range of 5.0 Â 10 À8 to 3.0 Â 10 À6 mol L À1 , with a low detection limit of 3.0 Â 10 À8 mol L À1 . The method was also applied successfully to detect curcumin in a Curcuma longa L. sample with high selectivity and accuracy, as well as good recovery.

show abstract

In-line cold column trapping of organic phase in dispersive liquid–liquid microextraction: Enrichment and determination of curcumin in human serum

Cited by 29 publications

References 16 publications

Analysis of losartan and carvedilol in urine and plasma samples using a dispersive liquid–liquid microextraction isocratic HPLC–UV method

Analysis of losartan and carvedilol in urine and plasma samples using a dispersive liquid–liquid microextraction isocratic HPLC–UV method

Solvent terminated natural deep eutectic solvent microextraction for concentration of curcuminoids in Curcumae Longae Rhizoma and turmeric tea

The electrochemical characterization of curcumin and its selective detection in Curcuma using a graphene-modified electrode

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