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Thiebot P, Magny R, Langrand J, Dufayet L, Houze P, Labat L. Analysis of homemade cannabis edibles by UHPLC-HRMS after standard addition method. J Anal Toxicol 2024; 48:372-379. [PMID: 38407251 DOI: 10.1093/jat/bkae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/01/2024] [Accepted: 02/16/2024] [Indexed: 02/27/2024] Open
Abstract
With recent evolution of cannabis legalization around the world, cannabis edibles are booming, and determining their concentration in Δ9-tetrahydrocannabinol (Δ9-THC), the regulated psychoactive substance, remains a challenge for toxicology laboratories, which must prove whether the product has legal status or not. Cannabinoids are a large family of structurally similar and lipophilic molecules, requiring dedicated pre-analytical methods, as well as efficient chromatographic separation to differentiate cannabinoid isomers which are distinguished by their psychoactive properties and their legal status. Here, we present two independent cases of cannabis edibles, for which we performed analysis of homemade cannabis chocolate cakes and of the resins and herbs used for cooking. Quantitation was carried out with a new developed standard addition method, to avoid matrix effects and matrix-dependent calibration. Extraction by QuEChERs method, followed by targeted and non-targeted analysis by ultra-high performance liquid chromatography hyphenated to high resolution mass spectrometry (UHPLC-HRMS) allowed the identification of several phytocannabinoids, mainly Δ9-tetrahydrocannabinol (Δ9-THC), cannabidiol (CBD) and their acid precursors Δ9-THC acid (THCA) and CBD acid (CBDA). Δ9-THC was identified in significant concentrations (mg/g) in both edibles, even though one was prepared with CBD herb. This work highlights the need to analyze cannabis edibles, as well as the resins and herbs used in their preparation if it is homemade, and it proposes a reliable analytical method for toxicology laboratories.
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Affiliation(s)
- Pauline Thiebot
- Laboratoire de Toxicologie Biologique, Fédération de Toxicologie, Hôpital Lariboisière, APHP, 2 rue Ambroise Paré, Paris 75010, France
- INSERM UMRS-1144, Université Paris Cité, 4 avenue de l'Observatoire, Paris 75006, France
| | - Romain Magny
- Laboratoire de Toxicologie Biologique, Fédération de Toxicologie, Hôpital Lariboisière, APHP, 2 rue Ambroise Paré, Paris 75010, France
- INSERM UMRS-1144, Université Paris Cité, 4 avenue de l'Observatoire, Paris 75006, France
| | - Jérôme Langrand
- INSERM UMRS-1144, Université Paris Cité, 4 avenue de l'Observatoire, Paris 75006, France
- Centre Antipoison, Fédération de Toxicologie, Hôpital Fernand Widal, APHP, 200 rue du Faubourg Saint-Denis, Paris 75010, France
| | - Laurène Dufayet
- INSERM UMRS-1144, Université Paris Cité, 4 avenue de l'Observatoire, Paris 75006, France
- Unité Médico-Judiciaire, Hôpital Hôtel-Dieu AP-HP, 5 rue de la Cité, Paris 75004, France
| | - Pascal Houze
- Laboratoire de Toxicologie Biologique, Fédération de Toxicologie, Hôpital Lariboisière, APHP, 2 rue Ambroise Paré, Paris 75010, France
- INSERM UMRS-1144, Université Paris Cité, 4 avenue de l'Observatoire, Paris 75006, France
| | - Laurence Labat
- Laboratoire de Toxicologie Biologique, Fédération de Toxicologie, Hôpital Lariboisière, APHP, 2 rue Ambroise Paré, Paris 75010, France
- INSERM UMRS-1144, Université Paris Cité, 4 avenue de l'Observatoire, Paris 75006, France
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Szarka A, Hrouzková S. Fast DLLME-GC-MS Method for Determination of Pesticides in Carmelite Drops and Evaluation of Matrix Effects in Related Medicinal Products. Foods 2024; 13:1745. [PMID: 38890973 PMCID: PMC11172039 DOI: 10.3390/foods13111745] [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: 04/28/2024] [Revised: 05/24/2024] [Accepted: 05/30/2024] [Indexed: 06/20/2024] Open
Abstract
The production of nutraceuticals is a growing trend, as many consumers consider them an important part of the modern active lifestyle. Others rely on the use of nutraceuticals instead of prescribing pharmaceuticals to improve their health more naturally. One of the major concerns in the nutraceutical industry is the potential presence of contaminants. Even low concentrations of contaminant residues can be harmful, so analytical methods that are sensitive at ultratrace levels are needed. Dispersive liquid-liquid microextraction method combined with fast gas chromatography and mass spectrometry was developed for the inspection of pesticide residues in Carmelite drops. The most suitable recoveries are presented when the alcohol content is fixed at 20% in Carmelite drops. The method was validated; the linearity, limits of detection/quantification, the method accuracy and precision were obtained. The complex nutraceutical matrix causes significant complications in quantitative analysis; therefore, the main target of the work was placed on studying the effects of the matrix on the correct expression of the resulting concentration of contaminants in different types of samples. An in-depth study of matrix factors was carried out, and its relationship with the content of potential interferents from the medicinal products as well as other components added during the drops' production was discussed. Related medicinal plant-derived nutraceuticals were tested, the method was applied for real-life samples, and positive findings are herein reported.
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Affiliation(s)
| | - Svetlana Hrouzková
- Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia;
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Williams ML, Olomukoro AA, Emmons RV, Godage NH, Gionfriddo E. Matrix effects demystified: Strategies for resolving challenges in analytical separations of complex samples. J Sep Sci 2023; 46:e2300571. [PMID: 37897324 DOI: 10.1002/jssc.202300571] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/22/2023] [Accepted: 09/29/2023] [Indexed: 10/30/2023]
Abstract
Matrix effects can significantly impede the accuracy, sensitivity, and reliability of separation techniques presenting a formidable challenge to the analytical process. It is crucial to address matrix effects to achieve accurate and precise measurements in complex matrices. The multifaceted nature of matrix effects which can be influenced by factors such as target analyte, sample preparation protocol, composition, and choice of instrument necessitates a pragmatic approach when analyzing complex matrices. This review aims to highlight common challenges associated with matrix effects throughout the entire analytical process with emphasis on gas chromatography-mass spectrometry, liquid chromatography-mass spectrometry, and sample preparation techniques. These techniques are susceptible to matrix effects that could lead to ion suppression/enhancement or impact the analyte signal at various stages of the analytical workflow. The assessment, quantification, and mitigation of matrix effects are necessary in developing any analytical method. Strategies can be implemented to reduce or eliminate the matrix effect by changing the type of ionization, improving extraction and clean-up methods, optimization of chromatography conditions, and corrective calibration methods. While development of an effective strategy to completely mitigate matrix effects remains elusive, an integrated approach that combines sample preparation, analytical extraction, and effective instrumental analysis remains the most promising avenue for identifying and resolving matrix effects.
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Affiliation(s)
- Madison L Williams
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
| | - Aghogho Abigail Olomukoro
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
| | - Ronald V Emmons
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
| | - Nipunika H Godage
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
| | - Emanuela Gionfriddo
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
- School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio, USA
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Zhang DX, Wang MY, Lin WB, Qu S, Ji L, Xu C, Kan H, Dong K. Recent advances in emerging application of functional materials in sample pretreatment methods for liquid chromatography-mass spectrometry analysis of plant growth regulators: A mini-review. J Chromatogr A 2023; 1704:464130. [PMID: 37302252 DOI: 10.1016/j.chroma.2023.464130] [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: 12/23/2022] [Revised: 05/04/2023] [Accepted: 06/03/2023] [Indexed: 06/13/2023]
Abstract
Plant growth regulators (PGRs) are a class of small molecular compounds, which can remarkably affect the physiological process of plants. The complex plant matrix along with a wide polarity range and unstable chemical properties of PGRs hinder their trace analysis. In order to obtain a reliable and accurate result, a sample pretreatment process must be carried out, including eliminating the interference of the matrix effect and pre-concentrating the analytes. In recent years, the research of functional materials in sample pretreatment has experienced rapid growth. This review comprehensively overviews recent development in functional materials covering one-dimensional materials, two-dimensional materials, and three-dimensional materials applied in the pretreatment of PGRs before liquid chromatography-mass spectrometry (LC-MS) analysis. Besides, the advantages and limitations of the above functionalized enrichment materials are discussed, and their future trends have been prospected. The work could be helpful to bring new insights for researchers engaged in functional materials in sample pretreatment of PGRs based on LC-MS.
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Affiliation(s)
- Dong-Xue Zhang
- College of Chinese Medicinal Materials, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin, China
| | - Ming-Yue Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin, China
| | - Wen-Bo Lin
- College of Chinese Medicinal Materials, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin, China
| | - Shuai Qu
- Biology Institute of Jilin province, 1244 Qianjin Street, Changchun 130012, Jilin, China
| | - Li Ji
- College of Chinese Medicinal Materials, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin, China
| | - Chen Xu
- College of Chinese Medicinal Materials, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin, China
| | - Hong Kan
- College of Chinese Medicinal Materials, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin, China.
| | - Kai Dong
- College of Chinese Medicinal Materials, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin, China.
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Coglianese A, Charlier B, Mensitieri F, Filippelli A, Izzo V, Dal Piaz F. Standard addition method (SAM) in LC-MS/MS to quantify gluten-derived metabolites in urine samples. J Pharm Biomed Anal 2023; 232:115416. [PMID: 37120973 DOI: 10.1016/j.jpba.2023.115416] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/03/2023] [Accepted: 04/21/2023] [Indexed: 05/02/2023]
Abstract
A tight adherence to a gluten-free diet (GFD), the most effective treatment currently available for celiac disease, is important to reduce symptoms, avoid nutritional deficiencies and improve quality of life in celiac patients. The development of analytical methods allowing detecting gluten exposure due to occasional or involuntary food transgressions could represent a useful tool to monitor patient habits and conditions and prevent long-term complications. The aim of this work was to develop and validate an approach based on the standard addition methodology (SAM) for the detection and quantification of two main metabolites of alkylresorcinols, 3,5-dihydroxybenzoic acid (DHBA) and 3-(3,5-dihydroxyphenyl)-propanoic acid (DHPPA), whose presence in urine samples is related to the intake of gluten-containing foods. Analytically, the method consisted of a protein precipitation step followed by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) analysis. The chromatographic method involved the use of a hydrophilic interaction liquid chromatography (HILIC) in a direct phase approach; LC-MS/MS analyses were performed in selected reaction monitoring (SRM) mode. Manipulation and instrumental errors were normalised using stable isotopic standards (ISs). The SAM approach here described requires less than 1 mL of urine per sample, thus greatly reducing the sample volume needed. Noteworthy, despite the small cohort of samples analysed, our data allowed to identify a potential "threshold" value, around 200 ng/mL for DHBA and 400 ng/mL for DHPPA, to discriminate between a GFD and a gluten rich diet (GRD).
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Affiliation(s)
- Albino Coglianese
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; Graduate School in Clinical Pathology and Clinical Biochemistry, University of Salerno, Salerno, SA, Italy
| | - Bruno Charlier
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; University Hospital San Giovanni di Dio e Ruggi d'Aragona, Salerno, SA, Italy
| | - Francesca Mensitieri
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy
| | - Amelia Filippelli
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; University Hospital San Giovanni di Dio e Ruggi d'Aragona, Salerno, SA, Italy
| | - Viviana Izzo
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; University Hospital San Giovanni di Dio e Ruggi d'Aragona, Salerno, SA, Italy
| | - Fabrizio Dal Piaz
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; University Hospital San Giovanni di Dio e Ruggi d'Aragona, Salerno, SA, Italy.
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Patel VD, Shamsi SA, Miller A, Liu A. Quantitation of tryptophan and kynurenine in human plasma using 4-vinylphenylboronic acid column by capillary electrochromatography coupled with mass spectrometry. Electrophoresis 2023; 44:529-539. [PMID: 36718859 PMCID: PMC10129288 DOI: 10.1002/elps.202200251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 02/01/2023]
Abstract
Tryptophan (TRP) is an essential amino acid catabolized mainly through the kynurenine pathway, and part of it is catabolized in the brain. The abnormal depletion of TRP and production of kynurenine (KYN) by two enzymes, tryptophan 2,3-dioxygenase (TDO) and indoleamine 2,3-dioxygenase (IDO), have been linked to various neurological diseases. The ratio of TRP/KYN in plasma is a valuable measure for IDO/TDO activity and the prognosis of disease conditions. The 4-vinylphenylboronic acid (4-VPBA) was evaluated as a novel stationary phase for OT-CEC-MS/MS. TRP, KYN, and 3-hydroxykynurenine were separated using optimum conditions of 15 mM (NH4 )2 CO3 at pH 8 as a background electrolyte and 25 kV separation voltage on a 90 cm column. The usefulness of the 4-VPBA column for simple, fast, repeatable, and sensitive CEC-ESI-MS/MS application was demonstrated for the quantitation of TRP and KYN in the plasma of healthy human subjects and neuroinflammation subjects. The plasma sample was extracted on a zirconia-based ion-exchange cartridge for simultaneous protein precipitation and phospholipid removal. The method of standard addition, in combination with the internal standards approach, was used to prepare the calibration curve to overcome matrix matching and eliminate procedural errors. The developed quantitation method was validated according to FDA guidelines for sensitivity, accuracy, precision, and extraction recovery. The measured plasma level of TRP and KYN in healthy humans is aligned with the human metabolome database for the same two metabolites.
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Affiliation(s)
- Vijay D. Patel
- Department of Chemistry, Georgia State University, Atlanta, Georgia, USA
| | - Shahab A. Shamsi
- Department of Chemistry, Georgia State University, Atlanta, Georgia, USA
| | - Andrew Miller
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, Georgia, USA
| | - Aimin Liu
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas, USA
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7
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Visconti G, Boccard J, Feinberg M, Rudaz S. From fundamentals in calibration to modern methodologies: A tutorial for small molecules quantification in liquid chromatography-mass spectrometry bioanalysis. Anal Chim Acta 2023; 1240:340711. [PMID: 36641149 DOI: 10.1016/j.aca.2022.340711] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Over the last two decades, liquid chromatography coupled to mass-spectrometry (LC‒MS) has become the gold standard to perform qualitative and quantitative analyses of small molecules. When quantitative analysis is developed, an analyst usually refers to international guidelines for analytical method validation. In this context, the design of calibration curves plays a key role in providing accurate results. During recent years and along with instrumental advances, strategies to build calibration curves have dramatically evolved, introducing innovative approaches to improve quantitative precision and throughput. For example, when a labeled standard is available to be spiked directly into the study sample, the concentration of the unlabeled analog can be easily determined using the isotopic pattern deconvolution or the internal calibration approach, eliminating the need for multipoint calibration curves. This tutorial aims to synthetize the advances in LC‒MS quantitative analysis for small molecules in complex matrices, going from fundamental aspects in calibration to modern methodologies and applications. Different work schemes for calibration depending on the sample characteristics (analyte and matrix nature) are distinguished and discussed. Finally, this tutorial outlines the importance of having international guidelines for analytical method validation that agree with the advances in calibration strategies and analytical instrumentation.
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Affiliation(s)
- Gioele Visconti
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland
| | - Julien Boccard
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland
| | | | - Serge Rudaz
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland.
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8
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Wang X, Li X, Liu X, Zhao X, Li X, Zhang Q, Xiong Y. Accurate determination of vitamin B12 in infant formula by liquid chromatography/isotope dilution high-resolution mass spectrometry. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Oliveira do Nascimento H, Zillene Franklin da Silva M, Beserra Alexandre J, Bastos Vidal C, Vieira Carvalho T, Ferreira do Nascimento R. New HS-SPME-GC-BID method for the determination of volatile constituents in distilled beverages. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Feng X, Tang Z, Chen B, Feng S, Liu Y, Meng Q. A high-efficiency quantitation method for fatty aldehyde based on chemical isotope-tagged derivatisation. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2021.104381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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11
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Huang Y, Goh RMV, Pua A, Liu SQ, Sakumoto S, Oh HY, Ee KH, Sun J, Lassabliere B, Yu B. Effect of three milling processes (cyclone-, bead- and stone-millings) on the quality of matcha: Physical properties, taste and aroma. Food Chem 2022; 372:131202. [PMID: 34607047 DOI: 10.1016/j.foodchem.2021.131202] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 11/16/2022]
Abstract
Analysis of three matcha (cyclone-, bead- and stone-milled) revealed differences in their sizes and surface morphologies. Using liquid chromatography, 4 sugars, 6 organic acids, 18 amino acids and 9 polyphenols were detected in all matcha samples and shown to present in different amount. Moreover, 108 volatile compounds were detected and 30 potential flavour-contributing compounds were quantified by gas chromatography time-of-flight mass spectrometry using headspace-stir bar sorptive extraction-thin-film solid-phase microextraction (HS-SBSE-TFSPME). Sensory evaluation by a trained panel found that the matcha samples possess different notes (cyclone-milled: leafy; bead-milled: fishy; and stone-milled: roasty) which is supported by the volatile compound analysis. Finally, the three matcha were differentiated based on non-volatile and volatile components using principal component analysis, and the correlation between chemical composition and sensory evaluation data was carried out using partial least square regression. In conclusion, milling processes clearly affected the physical, chemical and sensory qualities of matcha.
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Affiliation(s)
- Yunle Huang
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623, Singapore; Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2, Singapore 117542, Singapore
| | - Rui Min Vivian Goh
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623, Singapore; Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2, Singapore 117542, Singapore
| | - Aileen Pua
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623, Singapore; Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2, Singapore 117542, Singapore
| | - Shao Quan Liu
- Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2, Singapore 117542, Singapore
| | - Shunichi Sakumoto
- Fukujuen Co. Ltd, 3-1-1 Saganakadai, Kizugawa-shi, Kyoto 619-0223, Japan
| | - Hong Yun Oh
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623, Singapore
| | - Kim Huey Ee
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623, Singapore
| | - Jingcan Sun
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623, Singapore
| | - Benjamin Lassabliere
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623, Singapore
| | - Bin Yu
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623, Singapore.
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12
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Petrov P, Cowen S, Goenaga-Infante H. On-column internal standardisation as an alternative calibration strategy for speciation analysis: feasibility demonstration through analysis of inorganic As in rice. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:3641-3648. [PMID: 34328489 DOI: 10.1039/d1ay00699a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Species-specific isotope dilution mass spectrometry (SS-IDMS) has been the calibration method of choice for high accuracy speciation analysis because it can correct for detector sensitivity drifts, matrix effects, and analyte loss during sample preparation and analysis. However, in many cases SS-IDMS calibration is either not applicable (e.g. for monoisotopic elements) or not feasible (e.g. limited by the cost and availability of like-for-like isotopically enriched species). The work presented here demonstrates the potential of a novel on-column species-specific internal calibration approach, which is based on the chromatographic injection of the same species of the analyte as the internal standard (IS), after the sample injection. It can compensate for on-column analyte losses and signal drift and can be applied with any detector capable of recording time-resolved data, provided that enough species resolution can be achieved. The feasibility of this novel calibration strategy for accurate quantitative elemental speciation in complex matrices is demonstrated here through the analysis of inorganic arsenic in rice. An expanded uncertainty (k = 2) of <10% was obtained for a mass fraction range of 60 to 300 μg kg-1 inorganic-As (i-As) in dry rice products. The method is currently used for the certification of i-As in baby food matrices to support Commission Regulation (EU) 2015/1006 in regard to the maximum levels of i-As in foodstuffs.
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Affiliation(s)
- Panayot Petrov
- LGC Ltd, National Measurement Laboratory, Queens Road, Teddington, TW11 0LY, UK.
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Simultaneous Quantification of Trace and Micro Phenolic Compounds by Liquid Chromatography Tandem-Mass Spectrometry. Metabolites 2021; 11:metabo11090589. [PMID: 34564404 PMCID: PMC8467048 DOI: 10.3390/metabo11090589] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 11/17/2022] Open
Abstract
The simultaneous quantification of trace and micro metabolites is a bottleneck in food and biological analysis. Phenolic compounds are the most widely distributed and have various physiological functions. In this study, the strategy for the simultaneous liquid chromatography tandem-mass spectrometry (LC-MS/MS) quantification of 13 trace and micro phenolic compounds was proposed by taking product ions and isotopic ions as quantitative ions. The method validation results showed that the limits of detection (LODs) were from 0.01 to 9.84 μg/kg, and the limits of quantification (LOQs) were from 0.03 to 32.8 μg/kg. The intra-day precision and inter-day precision were below 8.4% and 14.4%, respectively. The recoveries ranged from 81.9% to 117.2%, and the matrix effects ranged from -11.5% to 13.7%, which indicated that the method has high sensitivity and suitable stability. The developed analytical method was applied to determine trace and micro constituents in rapeseed samples. The analysis results indicated that the contents of sinapine have significantly different between high and low total phenolic content rapeseeds. This method provides a reference strategy for the simultaneous quantitative analysis of other micro- and trace antioxidants.
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14
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Kottapalli K, Novosselov IV. Aerodynamic resuspension and contact removal of energetic particles from smooth, rough, and fibrous surfaces. Talanta 2021; 231:122356. [PMID: 33965023 DOI: 10.1016/j.talanta.2021.122356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 12/23/2022]
Abstract
Surface sampling for trace explosives residues is a critical step in the security screening in which microparticles are collected for subsequent chemical analysis. The current surface swabbing approach suffers from limited sampling area coverage, uncertainty in harvesting efficiencies, and user bias. Non-contact sampling has received interest due to its ability to interrogate large surface areas without the redeposition of the collected sample. However, the aerodynamic liberation of energetic particles from different types of substrates has not been parameterized or directly compared with the contact sampling methods. Here, we report aerodynamic resuspension rates of TNT, RDX, and HMX microparticles from smooth, rough, and fibrous surfaces. The resuspension thresholds are correlated to the boundary layer properties, i.e., wall shear stresses (τw = 50-500Pa). These rates are then compared to contact sampling for five commercial swabs using a standardized swabbing method. LC-MS analysis is used for the quantification of particle removal efficiencies. Contact sampling has an advantage over the low shear stress cases for particle liberation from the smooth surfaces. Aerodynamic particle resuspension rates increase with the wall shear stress. It shows better results for rough and fibrous surfaces than contact removal for tested analytes.
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Affiliation(s)
- Kalyan Kottapalli
- Department of Mechanical Engineering, University of Washington, 4000 15th Ave NE, Seattle, WA 98195, USA.
| | - Igor V Novosselov
- MEB 309, Department of Mechanical Engineering, 3900 E Stevens Way NE, University of Washington, Seattle, WA, 98195, USA.
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15
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Hasegawa K, Minakata K, Suzuki M, Suzuki O. The standard addition method and its validation in forensic toxicology. Forensic Toxicol 2021. [DOI: 10.1007/s11419-021-00585-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Abstract
Purpose
In the quantitative forensic toxicological analyses using instruments, major methods to be employed are conventional matrix-matched calibration method (MMCM). However, nowadays, the needs for using the standard addition methods (SAM) are increasing. In spite of this situation, there are no reports of the guidelines for the validations of SAM. In this review, the principle, how to perform it, advantages, disadvantages, reported application data, and the details of validation procedures for the SAM are described.
Methods
Various databases such as SciFinder, Google and Google Scholar were utilized to collect relevant reports referring to the SAM. The long experiences of our research group on the SAM were also included in this review.
Results
Although the experimental procedures for the SAM are much more laborious than those of the MMCM, the SAM is essential to quantify target xenobiotic(s) in special matrices such as human solid tissues or biles, which remarkably interfere with the usual quantitative analyses. The validation methods for the SAM have been also proposed for the cases in the absence of the blank matrices.
Conclusions
To our knowledge, this is the first presentation of detailed SAM procedure and its validation, which will facilitate the use of the SAM in forensic toxicology. Especially for its validation, new simple methods have been proposed.
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16
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Capillary electrochromatography-mass spectrometry of kynurenine pathway metabolites. J Chromatogr A 2021; 1651:462294. [PMID: 34098249 DOI: 10.1016/j.chroma.2021.462294] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 01/13/2023]
Abstract
Few articles are reported for the simultaneous separation and sensitive detection of the kynurenine pathway (KP) metabolites. This work describes a capillary electrochromatography-mass spectrometry (CEC-MS) method using acrylamido-2-methyl-1-propanesulfonic acid (AMPS) functionalized stationary phase. The AMPS column was prepared by first performing silanization of bare silica with gamma-maps, followed by polymerization with AMPS. The CEC-MS/MS methods were established for six upstream and three downstream KP metabolites. The simultaneous separation of all nine KP metabolites is achieved without derivatization for the first time in the open literature. Numerous parameters such as pH and the concentration of background electrolyte, the concentration of the polymerizable AMPS monomer, column length, field strength, and internal pressure were all tested to optimize the separation of multiple KP metabolites. A baseline separation of six upstream metabolites, namely tryptophan (TRP), kynurenine (KYN), 3-hydroxykynurenine (HKYN), kynurenic acid (KA), anthranilic acid (AA), and xanthurenic acid (XA), was possible at pH 9.25 within 26 min. Separation of six downstream and related metabolites, namely: tryptamine (TRPM), hydroxy‑tryptophan (HTRP), hydroxyindole-3 acetic acid (HIAA), 3-hydroxyanthranilic acid (3-HAA), picolinic acid (PA), and quinolinic acid (QA), was achieved at pH 9.75 in 30 min. However, the challenging simultaneous separation of all nine KP metabolites was only accomplished by increasing the column length and simultaneous application of internal pressure and voltage in 114 min. Quantitation of KP metabolites in commercial human plasma was carried out, and endogenous concentration of five KP metabolites was validated. The experimental limit of quantitation ranges from 100 to 10,000 nM (S/N = 8-832, respectively), whereas the experimental limit of detection ranges from 31 to 1000 nM (S/N = 2-16, respectively). Levels of five major KP metabolites, namely TRP, KYN, KA, AA, and QA, and their ratios in patient plasma samples previously screened for inflammatory biomarkers [C-reactive protein (CRP) and tumor necrosis factor-alpha (TNF-α)] was measured. Pairs of the level of metabolites with significant positive correlation were statistically evaluated.
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17
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Effects of putrefaction on the quantitative analyses of diphenhydramine in blood and tissues: model experiments by the routine matrix-matched calibration method and standard addition method with different internal standards. Forensic Toxicol 2021. [DOI: 10.1007/s11419-021-00580-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Zhao J, Zhang M, Guo J, Meng F, Liu X, Yu J, Liu L. A novel ISM-SAM strategy, based on gas chromatography/mass spectrometry analysis, to compensate for matrix effects in the determination of pyruvic acid. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2021; 35:e9042. [PMID: 33395499 DOI: 10.1002/rcm.9042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/11/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
RATIONALE The matrix effect is tricky in gas chromatography/mass spectrometry (GC/MS) analyses. Although several methods have been proposed to solve this problem, the results were unsatisfactory. Even fewer studies have assessed the performance of corrective methods. Hence, our study focused on assessing several common corrective methods, and then proposed a new strategy to correct for the matrix effect in GC/MS analyses. METHODS In GC/MS analyses, the internal standard method (ISM) was employed to overcome the matrix effect during the detection of pyruvic acid (PA) in serum samples from a healthy adult female. The accuracy of the ISM was evaluated by comparing it with the standard addition method (SAM). To employ the ISM-SAM strategy, correction factors (CFs) were established by combining the ISM and the SAM based on different groups. The CFs were used to normalize data onto the results of subsequent analyses. RESULTS When using the ISM to detect levels of PA, a serious bias is observed, thereby affecting the conclusions reached. In contrast, more reliable data can be obtained after normalizing results by undertaking the ISM-SAM strategy. The feasibility of this strategy was verified by comparing it with the results of the SAM alone. The ISM-SAM strategy was successfully applied to quantify the PA levels in healthy people and nephrotic syndrome patients. CONCLUSIONS Our results indicated that a false outcome was presented when only the ISM was used to adjust the data, and important information would be missed if the correction strategy was not carried out. Therefore, ISM-SAM, as an available correction method, should be adapted to improve the reliability of research results.
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Affiliation(s)
- Jinhui Zhao
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Mingjia Zhang
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Jing Guo
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Fanyu Meng
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Xiaowei Liu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Jiaying Yu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
| | - Liyan Liu
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, P.R. China
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Qu M, Ma S, Huang Y, Yuan H, Zhang S, Ouyang G, Zhao Y. LC-MS/MS-based non-isotopically paired labeling (NIPL) strategy for the qualification and quantification of monosaccharides. Talanta 2021; 231:122336. [PMID: 33965016 DOI: 10.1016/j.talanta.2021.122336] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/08/2021] [Accepted: 03/18/2021] [Indexed: 01/03/2023]
Abstract
Investigation into monosaccharides is critical for studies of oligosaccharides structure and function in biological processes. However, monosaccharides quantification is still challenge due to their isomeric structure and high hydrophilic properties. Besides, it was difficult to obtain isotopic internal standards (IS) of each monosaccharide in complex matrixes. Herein, we developed a novel strategy for the qualification and quantification of monosaccharides in urine using two structure analogs 1-(4-methylphenyl)-3-methyl-5-pyrazolone (MPMP) and1-phenyl-3-methyl-5-pyrazolone (PMP) as non-isotopically paired labeling (NIPL) reagents by liquid chromatograph-tandem mass spectrometry (LC-MS/MS). The derivatized monosaccharides by NIPL method not only had sufficient retention time differences on reversed-phase column, but also exhibited predominant product ion pairs (m/z 189 & m/z 175) in the multiple reaction monitoring (MRM) mode. In this method, PMP labeled standards were adopted as one-to-one internal standards (ISs). 12 urinary monosaccharides were successfully determined and the linear ranges expanded five orders of magnitude with limit of quantification (LOQ) varied from 0.09 ng mL-1 to 0.36 ng mL-1 as well as the accuracy higher than 98.15% and the relative standard derivation (RSD) lower than 7.92%. With assistance of multivariate analysis, the targeted monosaccharide biomarkers were firstly obtained for the diagnosis of bladder cancer. By the inexpensive NIPL reagents-MPMP/PMP, the developed strategy possessed the specific advantages of low cost, simple operation, high sensitivity and high accuracy for the qualification and quantitation of monosaccharides. As expected, this method will provide an alternative application potential for targeted metabolomics analysis.
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Affiliation(s)
- Mengyuan Qu
- College of Chemistry, Zhengzhou University, China
| | - Shanshan Ma
- College of Chemistry, Zhengzhou University, China
| | - Yanjie Huang
- Department of Pediatrics, Henan University of CM, China
| | - Hang Yuan
- College of Chemistry, Zhengzhou University, China.
| | | | | | - Yufen Zhao
- College of Chemistry, Zhengzhou University, China
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20
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Raposo F, Barceló D. Challenges and strategies of matrix effects using chromatography-mass spectrometry: An overview from research versus regulatory viewpoints. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2020.116068] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Kaufmann A, Butcher P, Maden K, Walker S, Widmer M. Optimized multimatrix calibration concept for liquid chromatography mass spectrometry-based bioanalysis methods. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1159:122393. [PMID: 33137679 DOI: 10.1016/j.jchromb.2020.122393] [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: 05/22/2020] [Revised: 08/05/2020] [Accepted: 09/19/2020] [Indexed: 10/23/2022]
Abstract
In this paper, a calibration procedure for LC/MS-based bioanalysis methods, termed "A/B fortification", is proposed. The concept relies on the post-extraction fortification (B-spike) of an aliquot of the injection-ready sample extract for the determination and compensation of specific signal suppression or enhancement effects compared to matrix-free extract prepared in buffer or mobile phase. Conventional analyte recovery, observed due to the incomplete extraction of analytes from the sample or losses during a cleanup, is determined by the conventional pre-extraction fortification (A-spike) of a blank sample that belongs to the same type of matrix as the sample with the unknown analyte concentration. This approach permits a higher throughput than conventional sample fortification strategies. The results obtained by utilizing the A/B fortification concept were extensively compared against conventional methods (representative bank matrix fortification, sample fortification and internal standard). The proposed concept (based on the pre-fortification of a reference matrix and post-fortification of the sample) was found to be significantly less biased than internal standard-based techniques. The A/B fortification indicated a better accuracy than the sample fortification or representative blank matrix fortification approach and, most importantly, produced significantly fewer outliers. This was linked to the fact that in the case of the A/B fortification, the uncertainty of the subtraction of two peak areas (fortified minus unfortified sample) is reduced, because fortifications are not made prior to the extraction step but are made into the final injection-ready sample extract. Fortification into an injection-ready aliquot eliminates all sample processing-related differences (procedural errors), which can affect conventional sample fortification-based quantifications.
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Affiliation(s)
- A Kaufmann
- Official Food Control Authority of the Canton of Zurich, Fehrenstrasse 15, 8032 Zürich, Switzerland.
| | - P Butcher
- Official Food Control Authority of the Canton of Zurich, Fehrenstrasse 15, 8032 Zürich, Switzerland
| | - K Maden
- Official Food Control Authority of the Canton of Zurich, Fehrenstrasse 15, 8032 Zürich, Switzerland
| | - S Walker
- Official Food Control Authority of the Canton of Zurich, Fehrenstrasse 15, 8032 Zürich, Switzerland
| | - M Widmer
- Official Food Control Authority of the Canton of Zurich, Fehrenstrasse 15, 8032 Zürich, Switzerland
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22
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Efficient synthesis of deuterium-labelled Danshensu for quantitative bioanalysis. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07190-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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Gill BD, Abernethy GA, Indyk HE, Wood JE, Woollard DC. Differential Thermal Isomerization: Its Role in the Analysis of Vitamin D3 in Foods. J AOAC Int 2020; 103:563-569. [DOI: 10.1093/jaocint/qsz001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 10/20/2019] [Accepted: 10/23/2019] [Indexed: 12/16/2022]
Abstract
Abstract
Background
For nutritional purposes, the measurement of vitamin D3 (defined as the sum of vitamin D3 and previtamin D3) is required to obtain an accurate and reliable estimate of its content in foods. An often neglected aspect in the development of methods for the analysis of vitamin D3 is accounting for any potential analytical bias in the results associated with differential thermal isomerization between previtamin D and vitamin D.
Conclusions
For LC-UV methods using a vitamin D2 internal standard, cold saponification, or direct lipid extraction techniques should be avoided, unless chromatographic separation of vitamin D2, vitamin D3, and their previtamin forms is achieved so that UV absorbance corrections can be made. For both LC-UV and LC-MS methods using calciferol internal standards, the simplest solution to avoid analytical bias due to the presence of previtamin D is to utilize heating conditions (typically during saponification) such that previtamin D and vitamin D in the sample and the internal standard reach an equivalent equilibrium state prior to instrumental analysis. Only under such circumstances is the integration of previtamin D unnecessary to obtain accurate results for vitamin D3.
Highlights
A detailed discussion of the quantitation of vitamin D3 in food with concise recommendations for avoiding measurement bias as a consequence of differential thermal isomerization.
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Affiliation(s)
- Brendon D Gill
- Fonterra Co-operative Group Ltd, P.O. Box 7, Waitoa 3380, New Zealand
| | - Grant A Abernethy
- Fonterra Co-operative Group Ltd, Dairy Farm Rd, Palmerston North 4442, New Zealand
| | - Harvey E Indyk
- Fonterra Co-operative Group Ltd, P.O. Box 7, Waitoa 3380, New Zealand
| | - Jackie E Wood
- Fonterra Co-operative Group Ltd, P.O. Box 7, Waitoa 3380, New Zealand
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24
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Genetic, environmental and biomarker considerations delineating the regulatory effects of vitamin D on central nervous system function. Br J Nutr 2020; 123:41-58. [PMID: 31640823 DOI: 10.1017/s000711451900268x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Studies show that vitamin D (vit-D) (25(OH)D), the bioactive metabolite (1,25(OH)2D3) and vit-D receptors (vit-D receptor; protein disulphide isomerase, family A member 3) are expressed throughout the brain, particularly in regions pivotal to learning and memory. This has led to the paradigm that avoiding vit-D deficiency is important to preserve cognitive function. However, presently, it is not clear if the common clinical measure of serum 25(OH)D serves as a robust surrogate marker for central nervous system (CNS) homeostasis or function. Indeed, recent studies report CNS biosynthesis of endogenous 25(OH)D, the CNS expression of the CYP group of enzymes which catalyse conversion to 1,25(OH)2D3 and thereafter, deactivation. Moreover, in the periphery, there is significant ethnic/genetic heterogeneity in vit-D conversion to 1,25(OH)2D3 and there is a paucity of studies which have actually investigated vit-D kinetics across the cerebrovasculature. Compared with peripheral organs, the CNS also has differential expression of receptors that trigger cellular response to 1,25(OH)2D3 metabolites. To holistically consider the putative association of peripheral (blood) abundance of 25(OH)D on cognitive function, herein, we have reviewed population and genetic studies, pre-clinical and clinical intervention studies and moreover have considered potential confounders of vit-D analysis.
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25
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Wu L, Ye Z, Liu H, Guo H, Lin J, Zheng L, Chu N, Liu X. Rapid and highly sensitive quantification of the anti-tuberculosis agents isoniazid, ethambutol, pyrazinamide, rifampicin and rifabutin in human plasma by UPLC-MS/MS. J Pharm Biomed Anal 2019; 180:113076. [PMID: 31896523 DOI: 10.1016/j.jpba.2019.113076] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 12/16/2019] [Accepted: 12/21/2019] [Indexed: 01/13/2023]
Abstract
With the increased cases of multidrug- or rifampicin-resistant tuberculosis and co-infection with HIV globally, it is difficult to achieve ideal clinical responses because of poor drug absorption and drug-drug interactions. Herein, a bioanalytical UPLC-MS/MS method was developed and validated to quantify five anti-TB agents in human plasma samples for detecting blood drug concentrations to improve therapeutic effects. To overcome the matrix effects, stable isotope labeled analogue of each analyte was used for internal standardization. A simple single-step protein precipitation by acetonitrile was employed for the sample preparation, then the analytes including rifampicin, rifabutin, pyrazinamid, ethambutol, isoniazid and their isotope labeled internal standards (ILISs) were implemented on an HILIC silica column with a gradient mode. The linear range for each analyte was covering the peak drug concentration (Cmax) in the 20 times diluted plasma samples. The coefficient of variation of intra- and inter-day precision was less than 17.0 %, and the accuracy ranged between 91.5 and 110.0 %. The extraction recoveries of all agents were ≥90.2 %, and the matrix effects with internal standard-normalization for all agents were 97.1-110.0 %. The optimal blood sampling time was designed basing on the results of stability validation. This UPLC-MS/MS method with a run time of 3.5 min was successfully applied to routine therapeutic monitoring of the five anti-TB agents in patient plasma.
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Affiliation(s)
- Lingjie Wu
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China; Clinical Research Center for Phase I, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China; The Liver Center of Fujian Province, Fujian Medical University, Fuzhou, 350025, PR China
| | - Zhenjie Ye
- Clinical Research Center for Phase I, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China
| | - Hui Liu
- Clinical Research Center for Phase I, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China
| | - Hongliang Guo
- Clinical Research Center for Phase I, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China
| | - Jing Lin
- Department of Infectious Diseases, Fujian Medical University, Fuzhou, 350025, PR China
| | - Ling Zheng
- Clinical Research Center for Phase I, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China.
| | - Nannan Chu
- Clinical Research Center for Phase I, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China; Drug Clinical Study Center for Phase I, Wuxi People's Hospital, Wuxi, 214023, PR China.
| | - Xiaolong Liu
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China; Clinical Research Center for Phase I, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China; The Liver Center of Fujian Province, Fujian Medical University, Fuzhou, 350025, PR China; Department of Infectious Diseases, Fujian Medical University, Fuzhou, 350025, PR China.
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26
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Irlam RC, Parkin MC, Brabazon DP, Beardah MS, O'Donnell M, Barron LP. Improved determination of femtogram-level organic explosives in multiple matrices using dual-sorbent solid phase extraction and liquid chromatography-high resolution accurate mass spectrometry. Talanta 2019; 203:65-76. [DOI: 10.1016/j.talanta.2019.05.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 10/26/2022]
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