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Heneedak HM, Abdelshakour MA, Darwish KM, Mostafa SM, Elgawish MS. Green innovation in analytical chemistry: A sustainable densitometric HPTLC approach for the distinctive separation and quantification of structurally related abused drugs - tramadol, tapentadol, and venlafaxine - in seized pharmaceutical dosage forms. J Pharm Biomed Anal 2024; 243:116109. [PMID: 38518458 DOI: 10.1016/j.jpba.2024.116109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/04/2024] [Accepted: 03/14/2024] [Indexed: 03/24/2024]
Abstract
An innovative ecofriendly high-performance thin layer chromatographic (HPTLC) method with spectrophotometric detection for simultaneous determination of Tramadol (TMD), Tapentadol (TAP), and Venlafaxine (VEN) in seized dosage forms was presented. Our method was conducted to achieve separation following the optimal conditions: pre-coated silica gel plates using a green mobile phase (heptane: acetone: ammonia, 7:3:0.5 v/v), with absorbance scanning at 272 nm. The validation of the method was done following International Conference on Harmonization (ICH) guidelines, demonstrates linearity, accuracy, precision, selectivity, robustness, and system suitability. Separation was achieved with a detection limit of 0.34, 0.16, and 0.084 (ug/band) for TMD, TAP, and VEN, respectively, the method successfully analyzes seized samples. Trueness is confirmed through a high degree of similarity between HPTLC and gas chromatography results. The study's ecofriendly approach, simplicity, and selectivity position it as a promising method for efficient, on-site monitoring of seized samples.
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Affiliation(s)
- Hala M Heneedak
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; Forensic Chemistry Department, Forensic Medicine Authority, Ministry of Justice, Cairo 11617, Egypt
| | - Mohamed A Abdelshakour
- Pharmaceutical Analytical Chemistry Department, Faculty of pharmacy, Sohag University, Sohag 82524, Egypt
| | - Khaled M Darwish
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Samia M Mostafa
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Mohamed Saleh Elgawish
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; Chemistry Department, Korea University, Seoul 02841, Republic of Korea.
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2
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Maly M, Benes F, Binova Z, Zlechovcova M, Kastanek P, Hajslova J. Effective isolation of cannabidiol and cannabidiolic acid free of psychotropic phytocannabinoids from hemp extract by fast centrifugal partition chromatography. Anal Bioanal Chem 2023:10.1007/s00216-023-04782-9. [PMID: 37382652 DOI: 10.1007/s00216-023-04782-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 05/23/2023] [Accepted: 05/26/2023] [Indexed: 06/30/2023]
Abstract
Cannabidiol (CBD), together with its precursor cannabidiolic acid (CBDA), is the major phytocannabinoid occurring in most hemp cultivars. To ensure the safe use of these compounds, their effective isolation from hemp extract is required, with special emphasis on the elimination of ∆9-tetrahydrocannabinol (∆9-THC) and ∆9-tetrahydrocannabinolic acid (∆9-THCA-A). In this study, we demonstrate the applicability of fast centrifugal partition chromatography (FCPC) as a challenging format of counter-current preparative chromatography for the isolation of CBD and CBDA free of psychotropic compounds that may occur in Cannabis sativa L. plant extracts. Thirty-eight solvent mixtures were tested to identify a suitable two-phase system for this purpose. Based on the measured partition coefficients (KD) and separation factors (α), the two-phase system consisting of n-heptane:ethyl acetate:ethanol:water (1.5:0.5:1.5:0.5; v:v:v:v) was selected as an optimal solvent mixture. Employing UHPLC-HRMS/MS for target analysis of collected fractions, the elution profiles of 17 most common phytocannabinoids were determined. Under experimental conditions, the purity of isolated CBD and CBDA was 98.9 and 95.1% (w/w), respectively. Neither of ∆9-THC nor of ∆9-THCA-A were present; only trace amounts of other biologically active compounds contained in hemp extract were detected by screening against in-house spectral library using UHPLC-HRMS.
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Affiliation(s)
- Matej Maly
- Department of Food Analysis and Nutrition, University of Chemistry and Technology, Technická 5, 166 28, Prague 6, Czech Republic
| | - Frantisek Benes
- Department of Food Analysis and Nutrition, University of Chemistry and Technology, Technická 5, 166 28, Prague 6, Czech Republic
| | - Zuzana Binova
- Department of Food Analysis and Nutrition, University of Chemistry and Technology, Technická 5, 166 28, Prague 6, Czech Republic
| | - Marie Zlechovcova
- Department of Food Analysis and Nutrition, University of Chemistry and Technology, Technická 5, 166 28, Prague 6, Czech Republic
| | - Petr Kastanek
- Ecofuel Laboratories s.r.o., Ocelářská 9, 190 00, Prague 9, Czech Republic
| | - Jana Hajslova
- Department of Food Analysis and Nutrition, University of Chemistry and Technology, Technická 5, 166 28, Prague 6, Czech Republic.
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3
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Gorska A, Salgarella N, Calaminici R, Forte E, Beccaria M, Purcaro G. Impact of column temperature on triacylglycerol regioisomers separation in silver ion liquid chromatography using heptane-based mobile phases. J Chromatogr A 2023; 1702:464095. [PMID: 37247494 DOI: 10.1016/j.chroma.2023.464095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 05/18/2023] [Accepted: 05/21/2023] [Indexed: 05/31/2023]
Abstract
This work presents the investigation of the use of heptane as an alternative and less toxic mobile phase to the most used hexane for triacylglycerols (TAGs) analysis in silver ion high-performance liquid chromatography (Ag+-HPLC). The impact of column temperature (in the 5 °C-35 °C range) on the retention and resolution of five pairs of regioisomers relevant for the confectionery industry was investigated using a heptane-based mobile phase modified with acetonitrile (ACN). The retention behaviour was compared for a standard TAG mixture and an interesterified cocoa butter. The temperature effect previously observed with hexane-based mobile phases was confirmed for this new system, and it was also observed that the ACN concentration had an important impact on the strength of the temperature effect, with a higher ACN concentration leading to a lesser impact of temperature on the TAGs' elution behaviour. In general, the study allowed to conclude on the equivalence of hexane and heptane for TAGs regioisomers separation in Ag+-HPLC, independently of the used temperature or the ACN concentration. In addition, the applicability of heptane-based mobile phases for the separation of TAGs regioisomers was demonstrated on three other confectionary fat samples, namely palm olein, interesterified palm olein, and interesterified shea olein.
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Affiliation(s)
- Aleksandra Gorska
- Analytical Chemistry Lab, Gembloux Agro-Bio Tech, University of Liège, Gembloux 5030, Belgium
| | - Nicolò Salgarella
- Department of Agricultural, Forest and Food Sciences, University of Turin, 10124, Italy
| | | | - Emanuele Forte
- Soremartec Italia srl (Ferrero Group), Alba CN 12051, Italy
| | - Marco Beccaria
- Department of Chemical, Pharmaceutical, and Agricutural Sciences (DOCPAS), Via Luigi Borsari 46, University of Ferrara, 44121 Ferrara, Italy
| | - Giorgia Purcaro
- Analytical Chemistry Lab, Gembloux Agro-Bio Tech, University of Liège, Gembloux 5030, Belgium.
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Manikrao Ingle U, Pawar PR, Prakash G. Acid-assisted oil extraction directly from thraustochytrids fermentation broth and its energy assessment for docosahexaenoic acid-enriched oil production. BIORESOURCE TECHNOLOGY 2023; 367:128272. [PMID: 36347480 DOI: 10.1016/j.biortech.2022.128272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/28/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Thraustochytrids are the most prominent source of polyunsaturated fatty acids, specifically docosahexaenoic acid (DHA). Downstream processing constitutes a significant fraction of total production cost and thus needs judicious optimization. Currently, hazardous solvent-based extraction methods are used to extract oil from the dry or wet thraustochytrids cell mass. The process is also highly energy-intensive due to involvement of dewatering and drying as unit operations. Current work devised an energy-efficient acid-assisted extraction (AAE) methodology to overcome dry and wet biomass-based extraction limitations. AAE recovered 91 % of total oil with 35-40 % PUFA from the direct fermentation broth, eliminating the need for dewatering and drying of fermentation broth/cell biomass. The current work also presents an all-inclusive comparison of the energy assessment of oil extraction from dry and AAE method. AAE produced PUFA enriched oil with a total energy consumption of 210 MJ/kg, which was four times lower than that of conventional dry cell extraction methodology.
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Affiliation(s)
- Umesh Manikrao Ingle
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Mumbai, India
| | - Pratik R Pawar
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Mumbai, India
| | - Gunjan Prakash
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Mumbai, India.
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Górnaś P, Baškirovs G, Siger A. Free and Esterified Tocopherols, Tocotrienols and Other Extractable and Non-Extractable Tocochromanol-Related Molecules: Compendium of Knowledge, Future Perspectives and Recommendations for Chromatographic Techniques, Tools, and Approaches Used for Tocochromanol Determination. Molecules 2022; 27:6560. [PMID: 36235100 PMCID: PMC9573122 DOI: 10.3390/molecules27196560] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 11/07/2022] Open
Abstract
Free and esterified (bound) tocopherols, tocotrienols and other tocochromanol-related compounds, often referred to "tocols", are lipophilic antioxidants of great importance for health. For instance, α-tocopherol is the only tocochromanol with vitamin E activity, while tocotrienols have a positive impact on health and are proposed in the prevention and therapy of so-called modern diseases. Tocopherols, tocotrienols and plastochromanol-8 are the most well-known tocochromanols; in turn, knowledge about tocodienols, tocomonoenols, and other rare tocochromanol-related compounds is limited due to several challenges in analytical chemistry and/or low concentration in plant material. The presence of free, esterified, and non-extractable tocochromanols in plant material as well as their biological function, which may be of great scientific, agricultural and medicinal importance, is also poorly studied. Due to the lack of modern protocols as well as equipment and tools, for instance, techniques suitable for the efficient and simultaneous chromatographical separation of major and minor tocochromanols, the topic requires attention and new solutions, and/or standardization, and proper terminology. This review discusses the advantages and disadvantages of different chromatographic techniques, tools and approaches used for the separation and detection of different tocochromanols in plant material and foodstuffs. Sources of tocochromanols and procedures for obtaining different tocochromanol analytical standards are also described. Finally, future challenges are discussed and perspective green techniques for tocochromanol determination are proposed along with best practice recommendations. The present manuscript aims to present key aspects and protocols related to tocochromanol determination, correct identification, and the interpretation of obtained results.
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Affiliation(s)
- Paweł Górnaś
- Institute of Horticulture, Graudu 1, LV-3701 Dobele, Latvia
| | | | - Aleksander Siger
- Department of Food Biochemistry and Analysis, Poznan University of Life Sciences, Wojska Polskiego 48, 60-637 Poznan, Poland
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Golian M, Bien T, Schmelzle S, Esparza-Mora MA, McMahon DP, Dreisewerd K, Buellesbach J. Neglected Very Long-Chain Hydrocarbons and the Incorporation of Body Surface Area Metrics Reveal Novel Perspectives for Cuticular Profile Analysis in Insects. INSECTS 2022; 13:insects13010083. [PMID: 35055926 PMCID: PMC8778109 DOI: 10.3390/insects13010083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/02/2022] [Accepted: 01/03/2022] [Indexed: 12/10/2022]
Abstract
Simple Summary The waxy layer covering the surface of most terrestrial insects is mainly composed of non-polar lipids termed cuticular hydrocarbons (CHCs). These have a long research history as important dual traits for both desiccation prevention and chemical communication. We analyzed CHC profiles of seven species of the insect order Blattodea (termites and cockroaches) with the most commonly applied chromatographic method, gas-chromatography coupled with mass spectrometry (GC-MS), and the more novel approach of silver-assisted laser desorption/ionization mass spectrometry (Ag-LDI-MS). Comparing these two analytical methods, we demonstrated that the conventional GC-MS approach does not provide enough information on the entire CHC profile range in the tested species. Ag-LDI-MS was able to detect very long-chain CHCs ranging up to C58, which remained undetected when solely relying on standard GC-MS analysis. Additionally, we measured the body surface areas of each tested species applying 3D scanning technology to assess their respective CHC amounts per mm2. When adjusting for body surface areas, proportional CHC quantity distributions shifted considerably between our studied species, suggesting the importance of including this factor when conducting quantitative CHC comparisons, particularly in insects that vary substantially in body size. Abstract Most of our knowledge on insect cuticular hydrocarbons (CHCs) stems from analytical techniques based on gas-chromatography coupled with mass spectrometry (GC-MS). However, this method has its limits under standard conditions, particularly in detecting compounds beyond a chain length of around C40. Here, we compare the CHC chain length range detectable by GC-MS with the range assessed by silver-assisted laser desorption/ionization mass spectrometry (Ag-LDI-MS), a novel and rarely applied technique on insect CHCs, in seven species of the order Blattodea. For all tested species, we unveiled a considerable range of very long-chain CHCs up to C58, which are not detectable by standard GC-MS technology. This indicates that general studies on insect CHCs may frequently miss compounds in this range, and we encourage future studies to implement analytical techniques extending the conventionally accessed chain length range. Furthermore, we incorporate 3D scanned insect body surface areas as an additional factor for the comparative quantification of extracted CHC amounts between our study species. CHC quantity distributions differed considerably when adjusted for body surface areas as opposed to directly assessing extracted CHC amounts, suggesting that a more accurate evaluation of relative CHC quantities can be achieved by taking body surface areas into account.
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Affiliation(s)
- Marek Golian
- Institute for Evolution & Biodiversity, University of Münster, Hüfferstr. 1, D-48149 Münster, Germany;
| | - Tanja Bien
- Institute of Hygiene, University of Münster, Robert-Koch-Str. 41, D-48149 Münster, Germany; (T.B.); (K.D.)
| | - Sebastian Schmelzle
- Ecological Networks, Technical University of Darmstadt, Schnittspahnstr. 2, D-64287 Darmstadt, Germany;
| | - Margy Alejandra Esparza-Mora
- Institute of Biology—Zoology, Free University of Berlin, Unter den Eichen 87, D-12205 Berlin, Germany; (M.A.E.-M.); (D.P.M.)
- Department for Materials and Environment, BAM Federal Institute for Materials Research and Testing, Unter den Eichen 87, D-12205 Berlin, Germany
| | - Dino Peter McMahon
- Institute of Biology—Zoology, Free University of Berlin, Unter den Eichen 87, D-12205 Berlin, Germany; (M.A.E.-M.); (D.P.M.)
- Department for Materials and Environment, BAM Federal Institute for Materials Research and Testing, Unter den Eichen 87, D-12205 Berlin, Germany
| | - Klaus Dreisewerd
- Institute of Hygiene, University of Münster, Robert-Koch-Str. 41, D-48149 Münster, Germany; (T.B.); (K.D.)
| | - Jan Buellesbach
- Institute for Evolution & Biodiversity, University of Münster, Hüfferstr. 1, D-48149 Münster, Germany;
- Correspondence: ; Tel.: +49-(0)-251-83-21637
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7
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Yikilmaz Y, Kuzukiran O, Erdogan E, Sen F, Kirmizibayrak O, Filazi A. The determination of β-agonist residues in bovine tissues using liquid chromatography-tandem mass spectrometry. Biomed Chromatogr 2020; 34:e4926. [PMID: 32558952 DOI: 10.1002/bmc.4926] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 06/08/2020] [Accepted: 06/14/2020] [Indexed: 12/12/2022]
Abstract
We aimed to develop a rapid, simple and reproducible method based on LC-tandem mass spectrometry (LC-MS/MS) to analyze β-agonist residues (clenbuterol, zilpaterol, ractopamine and isoxsuprine) in bovine tissues. The method was validated in accordance with the European Council Decision 2002/657/EC. The samples were homogenized, and then 10 mL of an acetate buffer was added to a 5-g sample. The sample was then centrifuged at 12,000 rpm and filtered. Sodium hydroxide (2 m) was added to adjust pH of the sample that was centrifuged again. The extract was filtered through a solid-phase extraction column. The residue was re-dissolved in 250 μL acetonitrile and then subjected to LC-MS/MS. The separation was done on a C18 column. The mobile phase consisted of 0.1% formic acid in deionized water and 0.1% formic acid in methanol. The mean recoveries of β-agonists were in the range of 84.3%-119.1% with relative standard deviations (%RSDs) of 0.683%-4.05%. Decision limits and detection capabilities of the analytes ranged from 0.0960 to 4.9349 μg/kg and from 0.0983 to 5.0715, respectively. This method was used to detect four β-agonists in 100 bovine muscle, 100 liver and 100 kidney tissues from a slaughterhouse. No residue was found above the maximum residue limit level.
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Affiliation(s)
- Yeliz Yikilmaz
- Etlik Veterinary Research Control Institute, Ahmet Sefik Kolaylı Street, Ankara, 06100, Turkey
| | - Ozgur Kuzukiran
- Veterinary Department, Eldivan Vocational School of Health Services, Cankiri Karatekin University, Cankiri, 18700, Turkey
| | - Ekrem Erdogan
- Etlik Veterinary Research Control Institute, Ahmet Sefik Kolaylı Street, Ankara, 06100, Turkey
| | - Filiz Sen
- Etlik Veterinary Research Control Institute, Ahmet Sefik Kolaylı Street, Ankara, 06100, Turkey
| | - Ozlem Kirmizibayrak
- Etlik Veterinary Research Control Institute, Ahmet Sefik Kolaylı Street, Ankara, 06100, Turkey
| | - Ayhan Filazi
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Ankara University, Sehit Omer Halisdemir Street., Ankara, 06110, Turkey
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Tanács D, Orosz T, Szakonyi Z, Le TM, Fülöp F, Lindner W, Ilisz I, Péter A. High-performance liquid chromatographic enantioseparation of isopulegol-based ß-amino lactone and ß-amino amide analogs on polysaccharide-based chiral stationary phases focusing on the change of the enantiomer elution order. J Chromatogr A 2020; 1621:461054. [PMID: 32204880 DOI: 10.1016/j.chroma.2020.461054] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/13/2020] [Accepted: 03/16/2020] [Indexed: 12/27/2022]
Abstract
The enantioselective separation of newly prepared, pharmacologically significant isopulegol-based ß-amino lactones and ß-amino amides has been studied by carrying out high-performance liquid chromatography on diverse amylose and cellulose tris-(phenylcarbamate)-based chiral stationary phases (CSPs) in n-hexane/alcohol/diethylamine or n-heptane/alcohol/ diethylamine mobile phase systems. For the elucidation of mechanistic details of the chiral recognition, seven polysaccharide-based CSPs were employed under normal-phase conditions. The effect of the nature of selector backbone (amylose or cellulose) and the position of substituents of the tris-(phenylcarbamate) moiety was evaluated. Due to the complex structure and solvation state of polysaccharide-based selectors and the resulting enantioselective interaction sites, the chromatographic conditions (e.g., the nature and content of alcohol modifier) were found to exert a strong influence on the chiral recognition process, resulting in a particular elution order of the resolved enantiomers. Since no prediction can be made for the observed enantiomeric resolution, special attention has been paid to the identification of the elution sequences. The comparison between the effectiveness of covalently immobilized and coated polysaccharide phases allows the conclusion that, in several cases, the application of coated phases can be more advantageous. However, in general, the immobilized phases may be preferred due to their increased robustness. Thermodynamic parameters derived from the temperature-dependence of the selectivity revealed enthalpically-driven separations in most cases, but unusual temperature behavior was also observed.
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Affiliation(s)
- Dániel Tanács
- Institute of Pharmaceutical Analysis, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Somogyi u. 4, Hungary
| | - Tímea Orosz
- Institute of Pharmaceutical Analysis, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Somogyi u. 4, Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary
| | - Tam Minh Le
- Institute of Pharmaceutical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary; MTA-SZTE Stereochemistry Research Group, Hungarian Academy of Sciences, H-6720 Szeged, Eötvös u. 6, Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Eötvös u. 6, Hungary; MTA-SZTE Stereochemistry Research Group, Hungarian Academy of Sciences, H-6720 Szeged, Eötvös u. 6, Hungary
| | - Wolfgang Lindner
- Department of Analytical Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria
| | - István Ilisz
- Institute of Pharmaceutical Analysis, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Somogyi u. 4, Hungary.
| | - Antal Péter
- Institute of Pharmaceutical Analysis, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Somogyi u. 4, Hungary
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D’Alessandro EB, Soares AT, Lopes RG, Derner RB, Antoniosi Filho NR. Lutein and biodiesel sequential production from microalga using an environmentally friendly approach. CHEM ENG COMMUN 2020. [DOI: 10.1080/00986445.2020.1722654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Emmanuel Bezerra D’Alessandro
- Laboratório de Métodos de Extração e Separação (LAMES), Instituto de Química, Universidade Federal de Goiás, Goiânia, Brazil
| | - Aline Terra Soares
- Laboratório de Métodos de Extração e Separação (LAMES), Instituto de Química, Universidade Federal de Goiás, Goiânia, Brazil
| | - Rafael Garcia Lopes
- Laboratório de Cultivo de Algas (LCA), Departamento de Aquicultura, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Roberto Bianchini Derner
- Laboratório de Cultivo de Algas (LCA), Departamento de Aquicultura, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Nelson Roberto Antoniosi Filho
- Laboratório de Métodos de Extração e Separação (LAMES), Instituto de Química, Universidade Federal de Goiás, Goiânia, Brazil
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10
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Ibrahim D, Ghanem A. On the Enantioselective HPLC Separation Ability of Sub-2 µm Columns: Chiralpak ® IG-U and ID-U. Molecules 2019; 24:E1287. [PMID: 30986997 PMCID: PMC6480392 DOI: 10.3390/molecules24071287] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/26/2019] [Accepted: 03/29/2019] [Indexed: 12/11/2022] Open
Abstract
Silica with a particle size of 3-5 µm has been widely used as selector backbone material in 10-25 cm HPLC chiral columns. Yet, with the availability of 1.6 µm particles, shorter, high-efficiency columns practical for minute chiral separations are possible to fabricate. Herein, we investigate the use of two recently commercialized sub-2 µm columns with different substituents. Thus, Chiralpak® IG-U and ID-U were used in HPLC for the fast enantioseparation of a set of drugs. Chiralpak® IG-U [amylose tris (3-chloro-5-methylphenylcarbamate)] has two substituents on the phenyl ring, namely, a withdrawing chlorine group in the third position and a donating group in the fifth position. Chiralpak® ID-U [amylose tris (3-chlorophenylcarbamate)] has only one substituent on the phenyl ring, namely a withdrawing chlorine group. Their applications in three liquid chromatography modes, namely, normal phase, polar organic mode, and reversed phase, were demonstrated. Both columns have similar column parameters (50 mm length, 3 mm internal diameter, and 1.6 µm particle size) with the chiral stationary phase as the only variable. Improved chromatographic enantioresolution was obtained with Chiralpak® ID-U. Amino acids partially separated were reported for the first time under an amylose-based sub-2-micron column.
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Affiliation(s)
- Diana Ibrahim
- Chirality Program, Faculty of Science and Technology, University of Canberra, ACT 2601, Australia.
| | - Ashraf Ghanem
- Chirality Program, Faculty of Science and Technology, University of Canberra, ACT 2601, Australia.
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11
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Beszterda M, Nogala‐Kałucka M. Current Research Developments on the Processing and Improvement of the Nutritional Quality of Rapeseed (
Brassica napus
L.). EUR J LIPID SCI TECH 2019. [DOI: 10.1002/ejlt.201800045] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Monika Beszterda
- Department of Biochemistry and Food AnalysisPoznan University of Life SciencesMazowiecka 4860‐623PoznanPoland
| | - Małgorzata Nogala‐Kałucka
- Department of Biochemistry and Food AnalysisPoznan University of Life SciencesMazowiecka 4860‐623PoznanPoland
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12
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Panyoyai N, Shanks RA, Kasapis S. Tocopheryl acetate release from microcapsules of waxy maize starch. Carbohydr Polym 2017; 167:27-35. [DOI: 10.1016/j.carbpol.2017.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 03/01/2017] [Accepted: 03/02/2017] [Indexed: 10/20/2022]
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13
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Buddrick O, Jones OAH, Morrison PD, Small DM. Effect of Fermentation and Oil Incorporation on the Retention of E Vitamers During Breadmaking. Cereal Chem 2015. [DOI: 10.1094/cchem-07-14-0159-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Oliver Buddrick
- School of Applied Sciences, P.O. Box 2476, Royal Melbourne Institute of Technology, Melbourne, VIC 3001, Australia
| | - Oliver A. H. Jones
- School of Applied Sciences, P.O. Box 2476, Royal Melbourne Institute of Technology, Melbourne, VIC 3001, Australia
| | - Paul D. Morrison
- School of Applied Sciences, P.O. Box 2476, Royal Melbourne Institute of Technology, Melbourne, VIC 3001, Australia
| | - Darryl M. Small
- School of Applied Sciences, P.O. Box 2476, Royal Melbourne Institute of Technology, Melbourne, VIC 3001, Australia
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