Fluorescence enhancement effect for the determination of curcumin with yttrium(III)—curcumin—sodium dodecyl benzene sulfonate system

Wang, Feng; Huang, Wei; Wang, Yanwei

doi:10.1016/j.jlumin.2007.05.012

Cited by 31 publications

(8 citation statements)

References 16 publications

(15 reference statements)

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“…Furthermore, the intensity was enhanced in the case of Pb (II), Cd (II), Hg (II), and Cu (II) ions. Gadolinium-doped ZnS nanoparticles showed enhancement of the photoluminescence spectra for Pb (II) and Cd (II), and quenched for Hg (II), Cu (II), and Ni (II) ions (Figure 7b) [37,38,39]. It has been previously reported that Cu 2+ ions quenched the fluorescence intensity of the graphene quantum dots by a magnitude of 2–3 times in comparison to other tested metal ions like Fe, Al, Co, Cd, and Pb [40].…”

Section: Resultsmentioning

confidence: 99%

Bioinspired ZnS:Gd Nanoparticles Synthesized from an Endophytic Fungi Aspergillus flavus for Fluorescence-Based Metal Detection

et al. 2019

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Recently, several nonconventional sources have emerged as strong hotspots for the biosynthesis of chalcogenide quantum dots. However, studies that have ascertained the biomimetic methodologies that initiate biosynthesis are rather limited. The present investigation portrays a few perspectives of rare-earth(Gd)-doped ZnS biosynthesis using the endophytic fungi Aspergillus flavus for sensing metals based on their fluorescence. Analysis of ZnS:Gd nanoparticles was performed by elemental analysis, energy-dispersive X-ray spectroscopy (EDS), atomic force microscopy (AFM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), photoluminescence (PL), and transmission electron microscopy (TEM). The results of TEM demonstrated that the particles were polycrystalline in nature, with a mean size of 10–18 nm. The fluorescence amenability of the biogenic ZnS nanoparticles was further used for the development of a simple and efficient sensing array. The results showed sensitive and detectable quenching/enhancement in the fluorescence of biogenic colloidal ZnS nanoparticles, in the presence of Pb (II), Cd (II), Hg (II), Cu (II) and Ni (II), respectively. The fluorescence intensity of the biogenic ZnS:Gd nanoparticles was found to increase compared to that of the ZnS nanoparticles that capacitate these systems as a reliable fluorescence sensing platform with selective environmental applications.

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Section: Resultsmentioning

confidence: 99%

Bioinspired ZnS:Gd Nanoparticles Synthesized from an Endophytic Fungi Aspergillus flavus for Fluorescence-Based Metal Detection

et al. 2019

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“…Fluorimetric methods have shown to be sensitive, simple, rapid and reproducible for the quantitative determination of many compounds (Aktas et al, 2003;Abdellatef et al, 2006). Considering the biological interest of curcumin, several studies have previously reported the determination of this drug by fluorimetric methods (Wang et al, 2006;Wang, Huang, 2007;Wang et al, 2008). However, the steady-state absorption and fluorescence characteristics of curcumin have been found to be sensitive to the solvent's characteristics.…”

Section: Resultsmentioning

confidence: 99%

Development and validation of a fluorimetric method to determine curcumin in lipid and polymeric nanocapsule suspensions

Mazzarino

Bellettini

Minatti

et al. 2010

Braz. J. Pharm. Sci.

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A simple, rapid, and sensitive fluorimetric method was developed and validated to quantify curcumin in lipid and polymeric nanocapsule suspensions, using acetonitrile as a solvent. The excitation and emission wavelengths were set at 397 nm and 508 nm, respectively. The calibration graph was linear from 0.1 to 0.6 mg/mL with a correlation coefficient of 0.9982. The detection and quantitation limits were 0.03 and 0.10 mg/mL, respectively. The validation results confirmed that the developed method is specific, linear, accurate, and precise for its intended use. The current method was successfully applied to the evaluation of curcumin content in lipid and polymeric nanocapsule suspensions during the early stage of formulation development.Uniterms: Curcumin/determination. Fluorimetric method/quantitative analysis. Polymeric nanocapsules/ evaluation. Lipid nanocapsules/evaluation.Um método fluorimétrico simples, rápido e sensível foi desenvolvido e validado para quantificação da curcumina em suspensões de nanocápsulas lipídicas e poliméricas, usando acetonitrila como solvente. Os comprimentos de onda de excitação e emissão foram 397 nm e 508 nm, respectivamente. Nas condições testadas, a curva de calibração demonstrou-se linear na faixa de 0,1 a 0,6 mg/mL, exibindo coeficiente de correlação de 0,9982. Os limites de detecção e quantificação foram 0,03 e 0,10 mg/mL, respectivamente. Os resultados da validação confirmaram que o método desenvolvido é específico, linear, exato e preciso para o uso proposto. O presente método foi aplicado com sucesso para a avaliação do teor de curcumina nas suspensões de nanocápsulas lipídicas e poliméricas durante o estágio inicial do desenvolvimento da formulação.Unitermos: Curcumina/determinação. Método fluorimétrico/análise quantitativa. Nanocápsulas poliméricas/avaliação. Nanocápsulas lipídicas/avaliação.

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“…A stability-indicating HPLC method for quantitative determination of curcumin in laboratory samples [14] and simultaneous estimation of silymarin and curcumin also have been reported [1]. Several other methods such as fluorimetric methods [15] and NMR methods [16] have been used for the determination and rapid quantitation of curcumin.…”

Section: Fig 1: Chemical Structure Of Curcuminmentioning

confidence: 99%

A New Stability-Indicating Rp-HPLC Method for Determination of Curcumin: An Application to Nanoparticulate Formulation

Panigrahi

Hirlekar

2016

Int J Pharm Pharm Sci

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Objective: The present study was aimed to develop a rapid, accurate, linear, sensitive and stability-indicating high performance liquid chromatographic method for determination of curcumin and to implement the developed method for the estimation of curcumin in the nanoparticulate formulation. Methods:Method development was performed using various solvent, buffer-solvent ratios, at different flow rates for better resolution and to decrease the run time. The developed method was validated in accordance with the international conference on harmonization (ICH) guidelines. The developed method was implemented to estimate the amount of curcumin in the curcumin-nanoparticulate formulation. Results:The optimum chromatographic conditions with adequate resolution for curcumin (16.10 min) was achieved when the separation was carried using C18 Conclusion:The developed analytical method is simple, precise, and reproducible and thus can be used for stability-indicating analysis of curcumin in pharmaceutical formulations. column at ambient temperature with an isocratic elution mode of mobile phase composed of a degassed mixture of phosphate buffer pH 3 and acetonitrile (50:50 v/v) at 1.0 ml/min flow rate with a total run time of 20 min. The developed method was validated for system suitability, accuracy, precision, limit of detection (LOD), limit of quantitation (LOQ), linearity and range. The LOD and LOQ were found to be 0.018 and 0.056 μg/ml respectively, which indicates that the method was sensitive, and can detect and quantify at lower levels of curcumin. Linearity range was from 5-15 μg/ml for curcumin with regression coefficient 0.997 indicates that at this concentration range curcumin was highly linear. Percent assay of curcumin was found to be 98.7% and curcumin recovered was found to be 0.78 mg which are estimated by using the developed method.

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Fluorescence enhancement effect for the determination of curcumin with yttrium(III)—curcumin—sodium dodecyl benzene sulfonate system

Cited by 31 publications

References 16 publications

Bioinspired ZnS:Gd Nanoparticles Synthesized from an Endophytic Fungi Aspergillus flavus for Fluorescence-Based Metal Detection

Bioinspired ZnS:Gd Nanoparticles Synthesized from an Endophytic Fungi Aspergillus flavus for Fluorescence-Based Metal Detection

Development and validation of a fluorimetric method to determine curcumin in lipid and polymeric nanocapsule suspensions

A New Stability-Indicating Rp-HPLC Method for Determination of Curcumin: An Application to Nanoparticulate Formulation

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