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Davidson A, Morisseau E, Li A, Joseph S, Johnson M. Challenges in sample preparation for swellable core technology tablets: Approaches for the removal of polyethylene oxide and optimization of API recovery. J Pharm Biomed Anal 2023; 233:115492. [PMID: 37269578 DOI: 10.1016/j.jpba.2023.115492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 04/21/2023] [Accepted: 05/25/2023] [Indexed: 06/05/2023]
Abstract
Swellable Core Technology (SCT) tablets, a solid oral dosage formulation designed for the controlled release of Active Pharmaceutical Ingredient (API), are made up of two distinct layers; an active layer containing the active ingredient (10-30%wt) and up to 90%wt polyethylene oxide (PEO); and a sweller layer which contains up to 65%wt PEO. The objective of this study was to develop a process to remove PEO from analytical test solutions and optimize API recovery using physicochemical properties of the API. Quantitation of PEO was performed by liquid chromatography (LC) using an evaporative light scattering detector (ELSD). This was used to build an understanding of removal of PEO using solid-phase extraction and liquid-liquid extraction techniques. A workflow was proposed to allow efficient development of analytical methods for SCT tablets with optimized sample clean-up.
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Affiliation(s)
- Andrew Davidson
- Pfizer Global Research and Development, Eastern Point Road, Groton, CT 06340, USA.
| | - Elizabeth Morisseau
- Pfizer Global Research and Development, Eastern Point Road, Groton, CT 06340, USA
| | - Alice Li
- University of California, Berkeley, Department of Molecular and Cell Biology, 142 Weill Hall #3200, Berkeley, CA 94720-3200, USA
| | - Sophie Joseph
- University of Connecticut Department of Chemistry, 55 N. Eagleville Road, U-3060, Storrs, CT 06269-3060, USA
| | - Melanie Johnson
- Pfizer Global Research and Development, Eastern Point Road, Groton, CT 06340, USA
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2
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Poulton AM, Poulten RC, Baldaccini A, Gabet A, Mott R, Treacher KE, Roddy E, Ferguson P. Towards improved characterisation of complex polyethylene glycol excipients using supercritical fluid chromatography- evaporative light scattering detection-mass spectrometry and comparison with size exclusion chromatography-triple detection array. J Chromatogr A 2020; 1638:461839. [PMID: 33434814 DOI: 10.1016/j.chroma.2020.461839] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/11/2020] [Accepted: 12/20/2020] [Indexed: 02/06/2023]
Abstract
The application of supercritical fluid chromatography (SFC) coupled to an evaporative light scattering detector (ELSD) and mass spectrometer (MS) was evaluated for the characterisation of three analogues of functionalised polyethylene glycol (PEG) 2000 (m-PEG-OH, m-PEG-cm and cm-PEG-cm (where m = OCH3 and cm = OCH2COOH)). These polymers are common excipients in drug product formulations for pharmaceuticals as they help provide the desired pharmacokinetic profile for successful drug delivery. A SFC-ELSD-MS method was developed which was selective to all three polymers, and allowed visualisation of these low UV chromophore materials. The method provided baseline resolution of the individual oligomers which allowed facile calculation of the polymer dispersity. A number of molecular weight characteristics were calculated, which showed the SFC-ELSD-MS methodology to be comparable with the current standard of analysis using size exclusion chromatography (SEC) with a triple detector array (TDA). The increased resolving power of SFC compared to SEC revealed a bimodal distribution of oligomers in the cm-PEG-cm 2000 polymer, which was not observed using SEC-TDA and exemplified SFC-ELSD as an orthogonal approach for polymer characterisation with the potential for much simpler, reduced sample and instrument preparation, calibration-less dispersity determination. When combined with SEC-TDA data, this combination allows a more complete characterisation of complex formulations excipients.
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Affiliation(s)
- Andrew M Poulton
- Early Chemical Development, Pharmaceutical Sciences, AstraZeneca, Macclesfield, United Kingdom.
| | - Rebecca C Poulten
- Early Chemical Development, Pharmaceutical Sciences, AstraZeneca, Macclesfield, United Kingdom
| | - Alice Baldaccini
- Early Chemical Development, Pharmaceutical Sciences, AstraZeneca, Macclesfield, United Kingdom
| | - Anaëlle Gabet
- Early Chemical Development, Pharmaceutical Sciences, AstraZeneca, Macclesfield, United Kingdom
| | - Rebecca Mott
- Chemical Development, Pharmaceutical Technology & Development, AstraZeneca, Macclesfield, United Kingdom
| | - Kevin E Treacher
- New Modalities Product Development, Pharmaceutical Technology & Development, AstraZeneca, Macclesfield, United Kingdom
| | - Emily Roddy
- Early Chemical Development, Pharmaceutical Sciences, AstraZeneca, Macclesfield, United Kingdom
| | - Paul Ferguson
- Oral Product Development, Pharmaceutical Technology & Development, AstraZeneca, Macclesfield, United Kingdom
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Grassino AN, Barba FJ, Brnčić M, Lorenzo JM, Lucini L, Brnčić SR. Analytical tools used for the identification and quantification of pectin extracted from plant food matrices, wastes and by-products: A review. Food Chem 2018; 266:47-55. [PMID: 30381214 DOI: 10.1016/j.foodchem.2018.05.105] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 05/09/2018] [Accepted: 05/23/2018] [Indexed: 11/18/2022]
Abstract
Pectin is the methylated ester of polygalacturonic acid and has a wide range of applications. It can be used in food and animal feed as well as in pharmaceutical and cosmetic products. Pectin is traditionally used as a gelling agent in fruit-based products, as a stabilizer in some fruit juices and milk drinks and fruit filling for bakery and confectionary products, but their potential applications differ according to their chemical composition. Therefore, at this stage of development, it is of a great importance to find fast, reliable methods to not only identify and quantify pectin, but also to determine its chemical structure and composition when it is extracted from plant matrices, wastes and by-products. The present review will focus on the analytical tools used to identify and quantify the amount of pectin obtained from plant matrices, wastes and by-products as well as determining its chemical and structural composition.
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Affiliation(s)
| | - Francisco J Barba
- Nutrition and Food Science Area, Preventive Medicine and Public Health, Food Sciences, Toxicology and Forensic Medicine Department, Faculty of Pharmacy, Universitat de València, Avda. Vicent Andrés Estellés, s/n, 46100 Burjassot, València, Spain.
| | - Mladen Brnčić
- Faculty of Food Technology and Biotechnology, University of Zagreb, Croatia.
| | - Jose M Lorenzo
- Centro Tecnológico de la Carne de Galicia, c/Galicia, 4, San Ciprián de Viñas, Ourense, Spain
| | - Luigi Lucini
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
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Ndiripo A, Pasch H. A multidimensional fractionation protocol for the oligomer analysis of oxidized waxes. Anal Chim Acta 2018; 1027:137-148. [PMID: 29866263 DOI: 10.1016/j.aca.2018.03.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/28/2018] [Accepted: 03/02/2018] [Indexed: 11/29/2022]
Abstract
Oxidized waxes possess far superior properties as compared to the alkanes they are derived from. The separation of alkane oligomers via gas chromatography (GC) becomes a challenge when polar oxygen-containing functional groups are introduced or when higher molar masses are targeted. In the present study, the separation and analysis of oligomers in oxidized and non-oxidized waxes using different liquid chromatographic techniques are investigated. Oligomers in two oxidized waxes and a non-oxidized wax from which they are derived, are separated using high-temperature solvent gradient interaction chromatography (HT-SGIC) and high-temperature two-dimensional liquid chromatography (HT-2D-LC). Evaporative light scattering detector conditions are tailored to provide the best detection with the solvent system at use. It is shown that oligomers in oxidized and non-oxidized waxes can be separated and identified using the mentioned techniques. It has been found that the ELSD detector response systematically decreases as the oxidation levels of the waxes increase. Coupling of HT-HPLC and high-temperature size exclusion chromatography (HT-SEC) in a comprehensive 2D-LC setup shows a broadening of the molar mass distributions of the lower oligomer fractions as a consequence of the modification indicating changes in the oligomer chain microstructures. A preparative fractionation technique is utilized to collect specific oligomer fractions from the bulk waxes followed by hyphenation to HT-HPLC and other techniques. HPLC is shown to provide more detailed information on the oligomer composition of waxes when coupled to a pre-fractionation technique.
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Affiliation(s)
- Anthony Ndiripo
- Department of Chemistry and Polymer Science, University of Stellenbosch, 7602, Matieland, South Africa
| | - Harald Pasch
- Department of Chemistry and Polymer Science, University of Stellenbosch, 7602, Matieland, South Africa.
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Moraes FS, da Costa MP, de Melo Silva VL, de Barros Pinto Moreira RV, de Barros RF, Mársico ET, Conte-Junior CA, de Oliveira Silva AC. Development of HPLC-ELSD method for determination of maltodextrin in raw milk. Food Chem 2017; 217:346-351. [PMID: 27664644 DOI: 10.1016/j.foodchem.2016.08.096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 02/21/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022]
Abstract
An analytical method was developed and validated for the determination of maltodextrin in raw milk, using high-performance liquid chromatography with evaporative light scattering detection. Maltodextrin content was evaluated in adulterated raw milk using a Supelcosil LC-NH2 (25cm×4.6mm) column and isocratic elution (68% of acetonitrile). Validation parameters exhibited adequate linearity, with relative standard deviation values between 0.74 and 2.16% (n=10) for repeatability and 0.11-19.39% (n=5) for intermediate precision. Limits of detection and quantification were 0.78 and 1.56mg.mL(-1), respectively, and recovery rates were between 91 and 93% for three levels. The application of this method shows that maltodextrin concentrations found in adulterated samples are lower than expected, which may be related to the quality of the commercial maltodextrin used. The method proposed proved to be simple and appropriate for the determination of maltodextrin in raw milk, with detection down to adulteration levels of 1%.
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Affiliation(s)
- Flávia Santana Moraes
- Department of Food Technology, Universidade Federal Fluminense, Rua Vital Brazil Filho 64, Niterói, RJ 24230-340, Brazil
| | - Marion Pereira da Costa
- Department of Food Technology, Universidade Federal Fluminense, Rua Vital Brazil Filho 64, Niterói, RJ 24230-340, Brazil
| | - Vitor Luiz de Melo Silva
- Department of Food Technology, Universidade Federal Fluminense, Rua Vital Brazil Filho 64, Niterói, RJ 24230-340, Brazil
| | | | - Raphael Ferreira de Barros
- Department of Food Technology, Universidade Federal Fluminense, Rua Vital Brazil Filho 64, Niterói, RJ 24230-340, Brazil
| | - Eliane Teixeira Mársico
- Department of Food Technology, Universidade Federal Fluminense, Rua Vital Brazil Filho 64, Niterói, RJ 24230-340, Brazil
| | - Carlos Adam Conte-Junior
- Department of Food Technology, Universidade Federal Fluminense, Rua Vital Brazil Filho 64, Niterói, RJ 24230-340, Brazil
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Zhou X, Wan QH. Separation and identification of oligomeric ethyl silicates by liquid chromatography with electrospray ionization mass spectrometry. J Sep Sci 2015; 38:1484-90. [PMID: 25678216 DOI: 10.1002/jssc.201401184] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Revised: 01/31/2015] [Accepted: 02/03/2015] [Indexed: 11/07/2022]
Abstract
Reversed-phase liquid chromatography coupled with electrospray ionization mass spectrometry was used to study the molecular structures of components and molar mass distributions in ethyl silicate-40, a versatile liquid precursor for silicon-based materials. Identity testing by standard spectroscopic techniques showed that a commercial sample of ethyl silicate-40 was composed of linear/branched ethoxysiloxane oligomers with the silicon atoms ranging from 2 to 12 together with minor monocyclic species. Analysis of the sample by liquid chromatography coupled with evaporative light scattering detection resulted in an elution profile consisting of a series of peak clusters. Peak identification showed that the linear/branched homologous series of oligomers were eluted in the order of increasing number of silicon atoms in the molecules and the time duration (width) of the resulting peak clusters increased in the same fashion corresponding to increasing number of geometric isomers. In addition, small amounts of monocyclic oligomers present in the sample were found to be less retained than each linear/branched counterpart. Finally, the molar mass distribution parameters for ethyl silicate-40 determined by the developed method were in good agreement with the literature values. Overall, this work demonstrates that reversed-phase liquid chromatography coupled with electrospray ionization mass spectrometry is an indispensable tool for the comprehensive characterization of complex mixtures of this type.
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Affiliation(s)
- Xiuli Zhou
- School of Pharmaceutical Science and Technology, Tianjin University, China
| | - Qian-Hong Wan
- School of Pharmaceutical Science and Technology, Tianjin University, China
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