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Lopez M, Bassi MA, Confalone L, Fanali S, Candotto V, Cura F, Carinci F. Gene Expression Study in Dental Pulp Stem Cells Cultivated on Titanium Alloys. EUR J INFLAMM 2012. [DOI: 10.1177/1721727x120100s210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Nowadays, research on orthopedic and dental implants is focused on titanium alloys due to their appropriated mechanical properties and corrosion resistance in the body environment. Another important aspect to be investigated is their surface topography, which is very important to osseointegration. The aim of this study was to assess dental pulp stem cells response to different titanium surface topography modified. Mesenchymal stem cell marker ENG was significantly decreased in stem cells cultivated in modified titanium surface respect to machined titanium surface, indicating the differentiation effect of this biomaterial on stem cells. The obtained results can be relevant to better understand the molecular mechanism of bone regeneration and as a model for comparing other materials with similar clinical effects.
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77
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Lopez M, Bassi MA, Confalone L, Fanali S, Candotto V, Cura F, Carinci F. Titanium Disk Surfaces Modulate Fibroblasts Behavior. EUR J INFLAMM 2012. [DOI: 10.1177/1721727x120100s208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Titanium (Ti) is the most widely used material in implantology for dental, orthopedic and maxillofacial purposes due to their excellent biocompatibility and mechanical properties Several data suggest that implant anchorage to bone and soft tissue can be modulated by surface characteristics. Fibroblasts are the soft tissues cells concerned in producing extracellular matrix and collagen. The aim of this work is to compare five different titanium surface treatments in order to investigate which one had the best behavior using Human Fibroblast (HFb) after seven days in culture medium. The expression levels of some adhesion and traction-resistance related genes (COL11A1, COL2A1, COL9A1, DSP, ELN, HAS1, and TFRC) were analyzed using real time Reverse Transcription-Polymerase Chain Reaction (real time RT-PCR). Titanium disks can lead to implant integration promoting the production of protein involved in cell-cell and cell-matrix adhesion and in stress-resistance, required for a good outcome in dental implantology
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78
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D’Orazio G, Fanali S. C18 silica packed capillary columns with monolithic frits prepared with UV light emitting diode: Usefulness in nano-liquid chromatography and capillary electrochromatography. J Chromatogr A 2012; 1232:176-82. [DOI: 10.1016/j.chroma.2011.11.056] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 11/24/2011] [Accepted: 11/28/2011] [Indexed: 11/26/2022]
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79
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Fanali C, Rocco A, Aturki Z, Mondello L, Fanali S. Analysis of polyphenols and methylxantines in tea samples by means of nano-liquid chromatography utilizing capillary columns packed with core–shell particles. J Chromatogr A 2012; 1234:38-44. [DOI: 10.1016/j.chroma.2011.12.103] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 12/28/2011] [Accepted: 12/29/2011] [Indexed: 11/30/2022]
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80
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Hezinová V, Aturki Z, Klepárník K, D'Orazio G, Foret F, Fanali S. Simultaneous analysis of cocaine and its metabolites in urine by capillary electrophoresis-electrospray mass spectrometry using a pressurized liquid junction nanoflow interface. Electrophoresis 2012; 33:653-60. [DOI: 10.1002/elps.201100410] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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81
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82
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Aturki Z, D'Orazio G, Rocco A, Fanali S. Advances in the enantioseparation of β-blocker drugs by capillary electromigration techniques. Electrophoresis 2011; 32:2602-28. [PMID: 21905049 DOI: 10.1002/elps.201100153] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 04/08/2011] [Accepted: 04/09/2011] [Indexed: 11/07/2022]
Abstract
β-Blocker drugs or β-adrenergic blocking agents are an important class of drugs, prescribed with great frequency. They are used for various diseases, particularly for the treatment of cardiac arrhythmias, cardioprotection after myocardial infarction (heart attack), and hypertension. Almost all β-blocker drugs possess one or more stereogenic centers; however; only some of them are administered as single enantiomers. Since both enantiomers can differ in their pharmacological and toxicological properties, enantioselective analytical methods are required not only for pharmacodynamic and pharmacokinetic studies but also for quality control of pharmaceutical preparations with the determination of enantiomeric purity. In addition to the chromatographic tools, in recent years, capillary electromigration techniques (CE, CEC, and MEKC) have been widely used for enantioselective purposes employing a variety of chiral selectors, e.g. CDs, polysaccharides, macrocyclic antibiotics, proteins, chiral ion-paring agents, etc. The high separation efficiency, rapid analysi,s and low consumption of reagents of electromigration methods make them a very attractive alternative to the conventional chromatographic methods. In this review, the development and applications of electrodriven methods for the enantioseparation of β-blocker drugs are reported. The papers concerning this topic, published from January 2000 until December 2010, are summarised here. Particular attention is given to the coupling of chiral CE and CEC methods to MS, as this detector provides high sensitivity and selectivity.
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83
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Wiedmer SK, D’Orazio G, Smått JH, Bourdin D, Baños-Pérez C, Sakeye M, Kivilompolo M, Kopperi M, Ruiz-Jiménez J, Fanali S, Riekkola ML. Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and capillary liquid chromatography. J Chromatogr A 2011; 1218:5020-9. [DOI: 10.1016/j.chroma.2010.12.071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 12/10/2010] [Accepted: 12/14/2010] [Indexed: 10/18/2022]
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84
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Mandrioli R, Mercolini L, Ferranti A, Fanali S, Raggi MA. Determination of aloe emodin in Aloe vera extracts and commercial formulations by HPLC with tandem UV absorption and fluorescence detection. Food Chem 2011. [DOI: 10.1016/j.foodchem.2010.10.112] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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85
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Asensio-Ramos M, D’Orazio G, Hernandez-Borges J, Rocco A, Fanali S. Multi-walled carbon nanotubes–dispersive solid-phase extraction combined with nano-liquid chromatography for the analysis of pesticides in water samples. Anal Bioanal Chem 2011; 400:1113-23. [DOI: 10.1007/s00216-011-4885-7] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Revised: 03/07/2011] [Accepted: 03/08/2011] [Indexed: 11/28/2022]
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86
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Barbato F, Grumetto L, Carpentiero C, Rocco A, Fanali S. Capillary electrochromatography as a new tool to assess drug affinity for membrane phospholipids. J Pharm Biomed Anal 2011; 54:893-9. [DOI: 10.1016/j.jpba.2010.11.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Revised: 11/19/2010] [Accepted: 11/23/2010] [Indexed: 11/24/2022]
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87
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Fanali S. Editorial on "Stereoselective determination of drugs and metabolites in body fluids, tissues and microsomal preparations by capillary electrophoresis (2000-2010)" by Jitka Caslavska and Wolfgang Thormann. J Chromatogr A 2011; 1218:587. [PMID: 20933236 DOI: 10.1016/j.chroma.2010.09.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2010] [Accepted: 09/13/2010] [Indexed: 11/18/2022]
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88
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Aturki Z, D’Orazio G, Rocco A, Si-Ahmed K, Fanali S. Investigation of polar stationary phases for the separation of sympathomimetic drugs with nano-liquid chromatography in hydrophilic interaction liquid chromatography mode. Anal Chim Acta 2011; 685:103-10. [DOI: 10.1016/j.aca.2010.11.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Revised: 11/04/2010] [Accepted: 11/07/2010] [Indexed: 12/01/2022]
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89
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Fanali S, Aturki Z, D'Orazio G, Rocco A, Ferranti A, Mercolini L, Raggi MA. Analysis of Aloe-based phytotherapeutic products by using nano-LC-MS. J Sep Sci 2010; 33:2663-70. [DOI: 10.1002/jssc.201000408] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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90
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Aturki Z, D'Orazio G, Rocco A, Bortolotti F, Gottardo R, Tagliaro F, Fanali S. CEC-ESI ion trap MS of multiple drugs of abuse. Electrophoresis 2010; 31:1256-1263. [PMID: 20209571 DOI: 10.1002/elps.200900629] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This article describes a method for the separation and determination of nine drugs of abuse in human urine, including amphetamines, cocaine, codeine, heroin and morphine. This method was based on SPE on a strong cation exchange cartridge followed by CEC-MS. The CEC experiments were performed in fused silica capillaries (100 microm x 30 cm) packed with a 3 mum cyano derivatized silica stationary phase. A laboratory-made liquid junction interface was used for CEC-MS coupling. The outlet capillary column was connected with an emitter tip that was positioned in front of the MS orifice. A stable electrospray was produced at nanoliter per minute flow rates applying a hydrostatic pressure (few kPa) to the interface. The coupling of packed CEC columns with mass spectrometer as detector, using a liquid junction interface, provided several advantages such as better sensitivity, low dead volume and independent control of the conditions used for CEC separation and ESI analysis. For this purpose, preliminary experiments were carried out in CEC-UV to optimize the proper mobile phase for CEC analysis. Good separation efficiency was achieved for almost all compounds, using a mixture containing ACN and 25 mM ammonium formate buffer at pH 3 (30:70, v/v), as mobile phase and applying a voltage of 12 kV. ESI ion-trap MS detection was performed in the positive ionization mode. A spray liquid, composed by methanol-water (80:20, v/v) and 1% formic acid, was delivered at a nano-flow rate of approximately 200 nL/min. Under optimized CEC-ESI-MS conditions, separation of the investigated drugs was performed within 13 min. CEC-MS and CEC-MS(2) spectra were obtained by providing the unambiguous confirmation of these drugs in urine samples. Method precision was determined with RSDs values <or=3.3% for retention times and <or=16.3% for peak areas in both intra-day and day-to-day experiments. LODs were established between 0.78 and 3.12 ng/mL for all compounds. Linearity was satisfactory in the concentration range of interest for all compounds (r(2)>or=0.995). The developed CEC-MS method was then applied to the analysis of drugs of abuse in spiked urine samples, obtaining recovery data in the range 80-95%.
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91
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Rosales-Conrado N, E. Leon-Gonzalez M, Rocco A, Fanali S. Enantiomeric Separation of Ofloxacin by Nano-Liquid Chromatography Using a Sulfated-β-Cyclodextrin as a Chiral Selector in the Mobile Phase. CURR ANAL CHEM 2010. [DOI: 10.2174/157341110791516972] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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92
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Herrero M, Simó C, García-Cañas V, Fanali S, Cifuentes A. Chiral capillary electrophoresis in food analysis. Electrophoresis 2010; 31:2106-14. [DOI: 10.1002/elps.200900770] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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93
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Danza M, Fanali S, Quaranta A, Vozza I. The importance of immediately loaded immediate post-extractive implants in esthetical rehabilitation: case series. MINERVA STOMATOLOGICA 2010; 59:215-222. [PMID: 20360667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The aim of this paper was to estimate, in a retrospective way, integration of hard and soft tissues in immediately loaded immediate postextractive implants. Benefits of this technique could be: single stage surgery, biological saving of tissues, aesthetic management of edentulism, good integration of both hard and soft tissues. Immediate loading of a postextractive implant seems also to produce a positive effect on the quality of perimplant soft tissues. The implants used in the present study have some advantages such as high auto-threading and auto-tapping ability, progressive increase of the thickness of the threads, at the apical and coronal level. All these features have helped to obtain a high primary stability.
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Fanali S. Editorial on “Chiral recognition by enantioselective liquid chromatography: Mechanisms and modern chiral stationary phases” by M. Lämmerhofer. J Chromatogr A 2010; 1217:813. [DOI: 10.1016/j.chroma.2009.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2009] [Accepted: 10/07/2009] [Indexed: 10/20/2022]
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95
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Fanali S. J Chromatogr A 2010; 1217:925. [DOI: 10.1016/j.chroma.2009.11.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2009] [Accepted: 11/25/2009] [Indexed: 10/20/2022]
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96
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Fanali S, D’Orazio G, Lomsadze K, Samakashvili S, Chankvetadze B. Enantioseparations on amylose tris(5-chloro-2-methylphenylcarbamate) in nano-liquid chromatography and capillary electrochromatography. J Chromatogr A 2010; 1217:1166-74. [DOI: 10.1016/j.chroma.2009.09.024] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 09/08/2009] [Accepted: 09/10/2009] [Indexed: 10/20/2022]
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97
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Si-Ahmed K, Tazerouti F, Badjah-Hadj-Ahmed AY, Aturki Z, D’Orazio G, Rocco A, Fanali S. Analysis of hesperetin enantiomers in human urine after ingestion of blood orange juice by using nano-liquid chromatography. J Pharm Biomed Anal 2010; 51:225-9. [DOI: 10.1016/j.jpba.2009.08.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Revised: 08/08/2009] [Accepted: 08/10/2009] [Indexed: 10/20/2022]
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98
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Asensio-Ramos M, Hernández-Borges J, Rocco A, Fanali S. Food analysis: A continuous challenge for miniaturized separation techniques. J Sep Sci 2009; 32:3764-800. [DOI: 10.1002/jssc.200900321] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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99
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Abstract
This paper summarizes the history of chiral separations done by using electromigration methods with CDs. Several enantioresolution mechanisms and a wide number of chiral selectors have been applied to the separation of optical isomers by CE. Among them inclusion-complexation with CDs or their derivatives played a very important role in CE. Since the beginning our group was involved in studying method optimization for enantiomer resolution by using these chiral selectors. One of our publications was the basis for further development in the field, at least for us. New chiral selectors, development of theory, new methodological approaches and a wide number of practical applications are the main results achieved in the last almost 25 years using CE as an enantioseparative technique.
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100
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Si-Ahmed K, Tazerouti F, Badjah-Hadj-Ahmed AY, Aturki Z, D'Orazio G, Rocco A, Fanali S. Optical isomer separation of flavanones and flavanone glycosides by nano-liquid chromatography using a phenyl-carbamate-propyl-beta-cyclodextrin chiral stationary phase. J Chromatogr A 2009; 1217:1175-82. [PMID: 19699481 DOI: 10.1016/j.chroma.2009.07.053] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2009] [Revised: 07/23/2009] [Accepted: 07/27/2009] [Indexed: 11/17/2022]
Abstract
In this paper a phenyl-carbamate-propyl-beta-cyclodextrin stationary phase was employed for the enantioseparation of several flavonoids, including flavanones and methoxyflavanones by using nano-liquid chromatography (nano-LC). The same stationary phase was also used for the diastereoisomeric separation of two flavanone glycosides. The compounds: flavanone, 2'-hydroxyflavanone, 4'-hydroxyflavanone, 6-hydroxyflavanone, 7-hydroxyflavanone, 4'-methoxyflavanone, 6-methoxyflavanone, 7-methoxyflavanone, hesperetin, hesperidin, naringenin and naringin were studied using reversed, polar organic and normal elution modes. The effect of the nature and composition of the mobile phase (organic modifier type, buffer and water content in the reversed phase mode) on the enantioresolution (R(s)), retention factor (k) and enantioselectivity (alpha) were investigated. Baseline resolution of all studied flavonoids, with the exception of 2'-hydroxyflavanone and naringin, was achieved in reversed phase mode using a mixture of MeOH/H(2)O at different ratios as mobile phase. Good results, in terms of peak efficiency and short analysis time, were obtained adding 1% triethylammonium acetate pH 4.5 buffer to MeOH/H(2)O mixture. The separation of the studied compounds was also performed in polar organic mode. By using 100% of MeOH as mobile phase, the resolution was achieved for the studied analytes, except for 7-hydroxyflavanone, 2'-hydroxyflavanone, naringenin, hesperidin and naringin. Normal mode was tested employing a mixture of EtOH/hexane/TFA as mobile phase achieving the enantiomeric and diastereomeric separation of only hesperetin and hesperidin, respectively. The use of nano-LC technique for the resolution of flavanones optical isomers allowed to achieve good resolutions in shorter analysis time compared to the results reported in literature with conventional HPLC.
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