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Sravani AB, Mathew EM, Ghate V, Lewis SA. A Sensitive Spectrofluorimetric Method for Curcumin Analysis. J Fluoresc 2022; 32:1517-1527. [PMID: 35526207 PMCID: PMC9080346 DOI: 10.1007/s10895-022-02947-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/11/2022] [Indexed: 01/07/2023]
Abstract
Curcumin (CUR), a natural polyphenolic compound extracted from the rhizomes of Curcuma longa, is used as a pharmaceutical agent, spice in food, and as a dye. Currently, CUR is being investigated for cancer treatment in Phase-II clinical trials. CUR also possesses excellent activities like anti-inflammatory, anti-microbial, and anti-oxidant, therefore quality control is crucial. The present research work was to develop a new, simple, validated and time-saving rapid 96-well plate spectrofluorimetric method for the determination of CUR. The developed method was compared with routinely used high performance liquid chromatography (HPLC) technique. The developed method were found to be linear in the concentration range of 15 to 3900 ng/mL with R2 ≥ 0.9983 for spectrofluorimetric and 50-7500 ng/mL with R2 ≥ 0.9999 for HPLC method. Accuracy, intraday and interday precision was adequate, with RSD lower than the suggested limits. The limits for the detection and the quantification of CUR were 7 and 15 ng/mL for spectrofluorimetric, and 25 and 50 ng/mL for HPLC respectively. The Bland-Altman analysis demonstrated the similarities between the two methods. The 96-well plate method was successfully applied to determine CUR in solid lipid nanoparticles (SLNs) and chitosan nanoparticles (Chi-NPs). The developed spectrofluorimetric method can hence serve as a possible replacement for the HPLC method for the quantification of CUR in healthcare and food products.
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Affiliation(s)
- Anne Boyina Sravani
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), 576104, Manipal, Karnataka, India
| | - Elizabeth Mary Mathew
- School of Pharmacy, Faculty of Health Sciences, University of Botswana, Gaborone, Botswana
| | - Vivek Ghate
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), 576104, Manipal, Karnataka, India
| | - Shaila A Lewis
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), 576104, Manipal, Karnataka, India.
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2
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Prabu S, Mohamad S. Curcumin/beta-cyclodextrin inclusion complex as a new “turn-off” fluorescent sensor system for sensitive recognition of mercury ion. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127528] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Youssef L, Patra D. Interaction of carbon nanotubes with curcumin: Effect of temperature and pH on simultaneous static and dynamic fluorescence quenching of curcumin using carbon nanotubes. LUMINESCENCE 2020; 35:659-666. [PMID: 31943729 DOI: 10.1002/bio.3770] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 12/08/2019] [Accepted: 12/20/2019] [Indexed: 11/11/2022]
Abstract
Curcumin (Cur) has medicinal properties, undergoes hydrolysis, and has low water solubility that limits its bioavailability and industrial usage. Different host molecules such as carbon nanotubes (CNT) can be useful in improving solubility and stabilizing Cur, therefore understanding the interaction of Cur with host molecules such as CNT is crucial. In this study, UV-visible light absorption and fluorescence spectroscopic techniques have been applied to reveal the interaction of Cur with CNT. Visible light absorption of Cur increases with CNT concentration, whereas fluorescence intensity of Cur is quenched in the presence of CNT. The obtained results confirm that fluorescence reduction is due to both static and dynamic quenching and is a result of the ground state and excited-state complex formation. The pH environment influences the quenching rate due to deprotonation of Cur at higher pH; excess OH- ion concentration in the solution further discourages electrostatic interaction between the deprotonated form of Cur with CNT. It is found that at lower temperatures (<35°C) dynamic quenching is much more dominant and at higher temperatures (45°C) static quenching is more dominant. The interaction is further supported using X-ray diffraction patterns and Fourier transform infrared spectra in the solid state, and suggests encapsulation of curcumin within the CNT. It is further evident that fluorescence quenching of Cur using CNT is further enhanced in the presence of several salts, as increase in ionic strength of the solution pushes the hydrophobic Cur molecule towards the CNT core by increasing the proximity between them.
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Affiliation(s)
- Lucia Youssef
- Department of Chemistry, American University of Beirut, Beirut, Lebanon
| | - Digambara Patra
- Department of Chemistry, American University of Beirut, Beirut, Lebanon
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Lübtow MM, Marciniak H, Schmiedel A, Roos M, Lambert C, Luxenhofer R. Ultra-High to Ultra-Low Drug-Loaded Micelles: Probing Host-Guest Interactions by Fluorescence Spectroscopy. Chemistry 2019; 25:12601-12610. [PMID: 31291028 PMCID: PMC6790594 DOI: 10.1002/chem.201902619] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Indexed: 12/13/2022]
Abstract
Polymer micelles are an attractive means to solubilize water insoluble compounds such as drugs. Drug loading, formulations stability and control over drug release are crucial factors for drug-loaded polymer micelles. The interactions between the polymeric host and the guest molecules are considered critical to control these factors but typically barely understood. Here, we compare two isomeric polymer micelles, one of which enables ultra-high curcumin loading exceeding 50 wt.%, while the other allows a drug loading of only 25 wt.%. In the low capacity micelles, steady-state fluorescence revealed a very unusual feature of curcumin fluorescence, a high energy emission at 510 nm. Time-resolved fluorescence upconversion showed that the fluorescence life time of the corresponding species is too short in the high-capacity micelles, preventing an observable emission in steady-state. Therefore, contrary to common perception, stronger interactions between host and guest can be detrimental to the drug loading in polymer micelles.
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Affiliation(s)
- Michael M. Lübtow
- Functional Polymer Materials, Chair for Advanced Materials SynthesisDepartment of Chemistry and Pharmacy and Bavarian Polymer InstituteUniversity of WürzburgRöntgenring 1197070WürzburgGermany
| | - Henning Marciniak
- Institute of Organic Chemistry and Center for Nanosystems ChemistryUniversity of WürzburgAm Hubland97070WürzburgGermany
| | - Alexander Schmiedel
- Institute of Organic Chemistry and Center for Nanosystems ChemistryUniversity of WürzburgAm Hubland97070WürzburgGermany
| | - Markus Roos
- Institute of Organic Chemistry and Center for Nanosystems ChemistryUniversity of WürzburgAm Hubland97070WürzburgGermany
| | - Christoph Lambert
- Institute of Organic Chemistry and Center for Nanosystems ChemistryUniversity of WürzburgAm Hubland97070WürzburgGermany
| | - Robert Luxenhofer
- Functional Polymer Materials, Chair for Advanced Materials SynthesisDepartment of Chemistry and Pharmacy and Bavarian Polymer InstituteUniversity of WürzburgRöntgenring 1197070WürzburgGermany
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Girardon M, Parant S, Monari A, Dehez F, Chipot C, Rogalska E, Canilho N, Pasc A. Triggering Tautomerization of Curcumin by Confinement into Liposomes. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900159] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Maxime Girardon
- Laboratoire Lorrain de Chimie Moléculaire, UMR 7053Université de Lorraine, CNRS Bvd. des Aiguillettes F-54506 Nancy France
| | - Stéphane Parant
- Laboratoire Lorrain de Chimie Moléculaire, UMR 7053Université de Lorraine, CNRS Bvd. des Aiguillettes F-54506 Nancy France
| | - Antonio Monari
- Laboratoire de Physique et Chimie Théoriques, UMR 7019Université de Lorraine, CNRS Bvd. des Aiguillettes F-54506 Nancy France
| | - François Dehez
- Laboratoire de Physique et Chimie Théoriques, UMR 7019Université de Lorraine, CNRS Bvd. des Aiguillettes F-54506 Nancy France
- Laboratoire International Associé Centre National de la Recherche Scientifique et University of Illinois at Urbana-Champaign B.P. 70239 54506 Vandœuvre-lès-Nancy Cedex France
| | - Christophe Chipot
- Laboratoire de Physique et Chimie Théoriques, UMR 7019Université de Lorraine, CNRS Bvd. des Aiguillettes F-54506 Nancy France
- Laboratoire International Associé Centre National de la Recherche Scientifique et University of Illinois at Urbana-Champaign B.P. 70239 54506 Vandœuvre-lès-Nancy Cedex France
- Department of PhysicsUniversity of Illinois at Urbana-Champaign 1110 West Green Street Urbana Illinois 61801 United States
| | - Ewa Rogalska
- Laboratoire Lorrain de Chimie Moléculaire, UMR 7053Université de Lorraine, CNRS Bvd. des Aiguillettes F-54506 Nancy France
| | - Nadia Canilho
- Laboratoire Lorrain de Chimie Moléculaire, UMR 7053Université de Lorraine, CNRS Bvd. des Aiguillettes F-54506 Nancy France
| | - Andreea Pasc
- Laboratoire Lorrain de Chimie Moléculaire, UMR 7053Université de Lorraine, CNRS Bvd. des Aiguillettes F-54506 Nancy France
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6
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Gold nanoparticles functionalized with Pluronic are viable optical probes for the determination of uric acid. Mikrochim Acta 2018; 185:185. [DOI: 10.1007/s00604-018-2725-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 02/08/2018] [Indexed: 12/20/2022]
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7
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Vasudevan S, Prabhune AA. Photophysical studies on curcumin-sophorolipid nanostructures: applications in quorum quenching and imaging. ROYAL SOCIETY OPEN SCIENCE 2018; 5:170865. [PMID: 29515826 PMCID: PMC5830715 DOI: 10.1098/rsos.170865] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Accepted: 01/04/2018] [Indexed: 05/02/2023]
Abstract
Sophorolipid biosurfactants are biodegradable, less toxic and FDA approved. The purified acidic form of sophorolipid is stimuli-responsive with self-assembling properties and used for solubilizing hydrophobic drugs. This study encapsulated curcumin (CU) with acidic sophorolipid (ASL) micelles and analysed using photophysical studies like UV-visible spectroscopy, photoluminescence (PL) spectroscopy and time-correlated single photon counting (TCSPC). TEM images have revealed ellipsoid micelles of approximately 100 nm size and were confirmed by dynamic light scattering. The bacterial fluorescence uptake studies showed the uptake of formed CUASL nanostructures into both Gram-positive and Gram-negative bacteria. They also showed quorum quenching activity against Pseudomonas aeruginosa. The results have demonstrated this system has potential theranostic applications.
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Affiliation(s)
| | - Asmita A. Prabhune
- Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Dr. Homi-Bhabha Road, Pune 411008, India
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El Kurdi R, Patra D. The role of OH - in the formation of highly selective gold nanowires at extreme pH: multi-fold enhancement in the rate of the catalytic reduction reaction by gold nanowires. Phys Chem Chem Phys 2018; 19:5077-5090. [PMID: 28134362 DOI: 10.1039/c6cp08607a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
There is a quest to understand the mechanism governing the morphology and geometry control of the particle growth of nanomaterials for their optical and catalytic applications. In the available literature, the role of OH- in dictating the size and shape of Au nanowires is unknown. As one of the first examples, herein, we explore how excess OH- ions in CTAB micelles play a significant role during the highly selective formation of gold nanowires having controlled diameters of ∼20-25 nm and length >1 μm, by reducing Au3+ to Au0 in a one pot, simple synthesis procedure in the presence of Ag+ ions. At pH 4-11, the same procedure does not harvest Au NWs, but Au NPs of diameter 50-70 nm, indicating that excess OH- is needed for nanowire formation. XRD, TGA, DSC, EDX, FT-IR and fluorescence spectroscopic analysis confirm that both CTAB and curcumin act as capping and stabilizing agents for Au NWs as well as Au NPs - there is no remarkable difference in the curcumin/CTAB content between Au NWs and NPs prepared in different pH environments. However, changing the CTAB micellar media to DPPC liposome media inhibits the formation of nanowires at pH ∼13; the growth of the Au NPs diminishes in DPPC liposomes, offering smaller NPs of diameter ∼25 to 30 nm, suggesting that the role of CTAB is necessary in nanowire formation. The rate of NW formation has been found to be 0.13 h-1 and the growth mechanism advocates elongation in the [110] facet of Au [110] as opposed to the [100] or [111] facets. Curcumin capped Au nanowires serve as excellent nano-catalysts for the reduction of nitro-compounds and the rate of reduction of 4-nitrophenol, a model compound, by curcumin capped Au NWs is found to be ∼10 fold higher, compared to Au NPs, which signifies that catalytic activities can be dictated by the size and shape of Au NPs.
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Affiliation(s)
- Riham El Kurdi
- Department of Chemistry, American University of Beirut, Beirut, Lebanon.
| | - Digambara Patra
- Department of Chemistry, American University of Beirut, Beirut, Lebanon.
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9
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Moussa Z, Chebl M, Patra D. Fluorescence of tautomeric forms of curcumin in different pH and biosurfactant rhamnolipids systems: Application towards on-off ratiometric fluorescence temperature sensing. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017. [DOI: 10.1016/j.jphotobiol.2017.06.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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10
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Chebl M, Moussa Z, Peurla M, Patra D. Polyelectrolyte mediated nano hybrid particle as a nano-sensor with outstandingly amplified specificity and sensitivity for enzyme free estimation of cholesterol. Talanta 2017; 169:104-114. [DOI: 10.1016/j.talanta.2017.03.070] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/22/2017] [Accepted: 03/23/2017] [Indexed: 02/08/2023]
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11
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Sarkar I. Monitoring thermo-reversible dehydration of the pluronic microenvironment using 4-chloro-1-naphthol as an ESPT fluorescent molecular probe. NEW J CHEM 2016. [DOI: 10.1039/c5nj03354c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ESPT fluorescent molecular probe, 4-chloro-1-naphthol, has been employed to study the thermo-reversible sol–gel transition, dehydration and micro-polarity of pluronics.
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Affiliation(s)
- Ivy Sarkar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai – 600 036
- India
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12
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El Khoury E, Abiad M, Kassaify ZG, Patra D. Green synthesis of curcumin conjugated nanosilver for the applications in nucleic acid sensing and anti-bacterial activity. Colloids Surf B Biointerfaces 2015; 127:274-80. [PMID: 25687098 DOI: 10.1016/j.colsurfb.2015.01.050] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 01/27/2015] [Accepted: 01/28/2015] [Indexed: 12/11/2022]
Abstract
Silver nanoparticles (Ag NPs) are often synthesized by chemical and physical methods. Natural and non-toxic molecules are recently being replaced for nanoparticles preparation. In this paper we have used curcumin, which interacts with Ag+ and subsequently synthesizes silver nanoparticles. Further continuation of the reaction often makes aggregation and forms dark brown/black silver oxide. Presence of glycerol in the reaction mixture gives mono-disperse curcumin conjugated Ag NPs, which can be made stable by capping with polyvinylpyrolidone (PVP). XRD data confirm that curcumin conjugated Ag NPs are crystalline in nature with a mean crystalline size of 13.27 nm. The Ag NPs are spherical and in the range of 10-50 nm though their hydrodynamic radius is found to be higher, ∼294 nm, due to polyvinylpyrolidone capping and aggregation of nanoparticles in solution. The production of curcumin conjugated Ag NPs follows first order kinetics and the effect of curcumin concentration during formation of Ag NPs indicates a linear enhancement in the production of Ag NPs with an increase in concentration of curcumin. These curcumin conjugated silver nanoparticles show anti-bacterial activity and can successfully determine nucleic acid (DNA and RNA) in the concentration range 100-1000 ng/mL with a linear regression coefficient >0.997 using Resonance Rayleigh Scattering spectra.
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Affiliation(s)
- Elsy El Khoury
- Department of Chemistry, American University of Beirut, Beirut, Lebanon
| | - Mohamad Abiad
- Department of Nutrition and Food Sciences, Faculty of Agricultural and Food Sciences, American University of Beirut, Beirut, Lebanon
| | - Zeina G Kassaify
- Department of Nutrition and Food Sciences, Faculty of Agricultural and Food Sciences, American University of Beirut, Beirut, Lebanon
| | - Digambara Patra
- Department of Chemistry, American University of Beirut, Beirut, Lebanon.
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Swain J, Mishra AK. 1-Naphthol as an ESPT fluorescent molecular probe for sensing thermotropic microenvironmental changes of pluronic F127 in aqueous media. Phys Chem Chem Phys 2015; 17:16752-9. [DOI: 10.1039/c5cp01833a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermotropic microenvironmental changes and the level of hydration in different microenvironments of pluronic F127 (PF127), (PEO106 PPO70 PEO106, average molar mass 13 000) in aqueous media have been studied using 1-naphthol, which is an ESPT fluorescent molecular probe.
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Affiliation(s)
- Jitendriya Swain
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600 036
- India
| | - Ashok Kumar Mishra
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600 036
- India
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