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Zhang JJ, Gao Y, Xu X, Zhao ML, Xi BN, Shu Y, Li C, Shen Y. In Situ Rapid Analysis of Squalene, Tocopherols, and Sterols in Walnut Oils Based on Supercritical Fluid Chromatography-Quadrupole Time-of-Flight Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:16371-16380. [PMID: 37867462 DOI: 10.1021/acs.jafc.3c05857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Quantification of liposoluble micronutrients in large-scale vegetable oil samples is urgently needed, because their health benefits are increasingly emphasized. However, current analytical methods are limited to either labor-intensive preparation processes or time-consuming chromatography separation. In this work, an online oil matrix separation strategy for direct, rapid, and simultaneous determination of squalene, tocopherols, and phytosterols in walnut oil (WO) was developed on the basis of the lipid class separation mode of supercritical fluid chromatography. A single run was completed in 13 min containing 6 min of column cleaning and balancing. Satisfactory limit of detections (0.05-0.20 ng/mL), limit of quantifications (0.15-0.45 ng/mL), recoveries (70.61-101.44%), and matrix effects (78.43-91.62%) were achieved, indicating the reliability of this method. In addition, eight sterol esters were identified in WO, which have not previously been reported. The proposed method was applied to characterize the liposoluble micronutrient profile of WO samples obtained from different walnut cultivars, geographical origins, and processes.
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Affiliation(s)
- Jing-Jing Zhang
- School of Chemical Engineering, Northwest University, Xi'an, Shaanxi 710069, People's Republic of China
| | - Yan Gao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Xiao Xu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Mei-Ling Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Bo-Nan Xi
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Yu Shu
- College of Food Science and Technology, Northwest University, Xi'an, Shaanxi 710069, People's Republic of China
| | - Cong Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Yehua Shen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
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Zheng X, Duan X, Lu D, Jiang Q, Liu Y, Xue H, You J, Yin L, Shi M. Cellular toxicity and pharmacokinetic study of butachlor by ultra-performance liquid chromatography-tandem mass spectrometry based on tandem mass spectrometry cubed technique. J Sep Sci 2023; 46:e2200725. [PMID: 36321527 DOI: 10.1002/jssc.202200725] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022]
Abstract
Butachlor is an aromatic amide compound that plays a role as a herbicide, a xenobiotic, and an environmental contaminant. The aim of this work was to develop a highly selective and sensitive ultra-performance liquid chromatography-tandem mass spectrometry method based on the tandem mass spectrometry cubed technique to determine butachlor in a biological matrix. Butachlor and internal standard acetochlor were separated on a Waters Acquity ultra-performance liquid chromatography BEH C18 column (2.1 × 50 mm, 1.7 μm) with gradient elution using 0.1% formic acid aqueous solution (A) and acetonitrile (B) as mobile phases. The transitions selected for tandem mass spectrometry cubed quantitative analysis in positive ion mode were: for butachlor, mass-to-charge ratio 312.2→238.1→162.1; for acetochlor, mass-to-charge ratio 270.1→224.0→148.1. The total running time for each sample was 5.5 min. The ultra-performance liquid chromatography-tandem mass spectrometry cubed method showed a linear relationship (R2 ≥ 0.995) in the concentration range of 0.5-100 ng/ml. The intra and interday accuracies are within the range of -10.6%-4.3% and precisions are between 4.48% and 13.14%. The novelty of the method is the use of tandem mass spectrometry cubed scanning mode, which improves selectivity and sensitivity. The results indicated that butachlor was cellular toxic. The safety of butachlor should be considered when it is used as a herbicide.
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Affiliation(s)
- Xinyue Zheng
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, P. R. China
| | - Xujian Duan
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, P. R. China
| | - Di Lu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, P. R. China
| | - Qiuhong Jiang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, P. R. China
| | - Yajun Liu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, P. R. China
| | - Hongyu Xue
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, P. R. China
| | - Jiansong You
- Aim Honesty Biopharmaceutical Co. Ltd, Dalian, P. R. China
| | - Lei Yin
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, P. R. China
- JenKem Technology Co. Ltd, Tianjin, P. R. China
| | - Meiyun Shi
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, P. R. China
- Aim Honesty Biopharmaceutical Co. Ltd, Dalian, P. R. China
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3
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Cao H, Yin L, Cao H, Guo H, Ren W, Li Y, Huang J. A sensitive and selective HPLC-MS 3 method for therapeutic drug monitoring of meropenem and its validation by comparison with HPLC-MS 2 methods. J Sep Sci 2022; 45:1683-1692. [PMID: 35247934 DOI: 10.1002/jssc.202200064] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/02/2022] [Accepted: 03/02/2022] [Indexed: 11/11/2022]
Abstract
Meropenem, a representative β-lactam antibiotic, is widely used to treat complicated and serious infections. Therefore, it is a great significance to monitor the plasma drug concentration for individualized antimicrobial therapy. This study first describes the development and validation of high performance liquid chromatography-tandem mass spectrometry cubed method for monitoring meropenem in human plasma. Protein precipitation with methanol and a chromatographic analysis time of 7 min make this method is simple and high-throughput. Meropenem was extracted from human plasma with recoveries greater than 94.1%. Calibration curves were linear (R2 >0.995) in the concentration range of 0.5-50 μg/mL. Overall accuracy and precision did not exceed 8.0% as well as no significant matrix effect was observed. The novelty of this method is that the triple-stage MS technology improves the selectivity and sensitivity. A comparison of the presented method and traditional liquid chromatography-tandem mass spectrometry method was assessed in 44 patients treated with meropenem and Passing-Bablok regression coefficients and Bland-Altman plots showed that no significant difference between the two methods. So the triple-stage MS method developed in this study is appropriate and practical for the monitor of meropenem in the daily clinical laboratory practice. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Haiwei Cao
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130061, PR China
| | - Lei Yin
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130061, PR China.,School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 124221, PR China
| | - Haihuan Cao
- Changchun Customs Technology Center, Puyang Street, Changchun, 130062, PR China
| | - Haiyang Guo
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130061, PR China
| | - Wenbo Ren
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130061, PR China
| | - Yanyan Li
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130061, PR China
| | - Jing Huang
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130061, PR China
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LC–MS3 Strategy for Quantification of Carbamazepine in Human Plasma and Its Application in Therapeutic Drug Monitoring. Molecules 2022; 27:molecules27041224. [PMID: 35209012 PMCID: PMC8876099 DOI: 10.3390/molecules27041224] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/04/2022] [Accepted: 02/07/2022] [Indexed: 02/01/2023] Open
Abstract
This study developed a detection method based on the strategy of HPLC/MS3 and verified its suitability by quantifying carbamazepine in human plasma. The high-performance liquid chromatography–tandem mass spectrometry (HPLC/MS3) system was performed using a Shimadzu UFLC XR liquid chromatography and a SCIEX QTRAP® 5500 linear ion trap triple quadrupole mass spectrometer. The specific operation was as follows: the sample protein was firstly precipitated using methanol, then carbamazepine and carbamazepine-D2N15 were separated on an ACQUITY UPLC HSS T3 column using the gradient elution with solvent A (0.1% formic acid) and solvent B (0.1% formic acid in acetonitrile) at a flow rate of 0.25 mL/min. Each sample was run for 7 min. This method was validated for various parameters including accuracy, precision, selectivity, linearity, LLOQ, etc. Only 5 μL of sample plasma could obtain the result of LLOD 0.5 µg/mL. The intra-day and inter-day precision was <8.23%, and accuracy was between −1.74% and 2.92%. This method was successfully used for monitoring the blood concentration of epilepsy patients after carbamazepine treatment.
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Quantification of the actual composition of polymeric nanocapsules: a quality control analysis. Drug Deliv Transl Res 2022; 12:2865-2874. [PMID: 35303273 PMCID: PMC9512864 DOI: 10.1007/s13346-022-01150-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2022] [Indexed: 12/16/2022]
Abstract
Nanocapsules (NCs) are drug delivery nanosystems that contain an oily core, stabilized by a surfactant, and surrounded by a polymeric shell. The assembling of the components is based on physical and physicochemical forces, and, hence, usually, only a fraction of each component is finally part of the NCs' structure, while the remaining amount might be solubilized or forming micelles in the NCs' suspending medium. Usually, reports on the characterization of nanostructures simply indicate the association efficiency of the loaded drugs instead of their complete final composition. In this work, we have developed a liquid chromatography (LC) mass spectrometry (MS) methodology that allows the quantification of all the components of a series of NCs prepared by different techniques, namely DL-α-tocopherol; D-α-tocopherol polyethylene glycol 1000 succinate; benzethonium; lecithin; hexadecyltrimethylammonium; 1,2-dioleoyl-3-trimethylammoniumpropane; caprylic/capric triglycerides; macrogol 15-hydroxystearate; polysorbate 80; polysialic acid; hyaluronic acid; and polyethylene glycol polyglutamic acid. The LC-MS method was validated in terms of linearity (0.9383 < r2 < 0.9997), quantification limits, and recoveries of the isolated NCs' and waste fractions. The final composition of the isolated NCs was found to strongly depend on their composition and preparation technique. In our view, the rigorous quantification of the exact composition of nanosystems is essential for the progress of nanotechnology. This quantitative analysis will allow researchers to draw more accurate conclusions about the influence of the nanosystems' composition on their biological performance.
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Cruz LRO, Fernandes Â, Di Gioia F, Petropoulos SA, Polyzos N, Dias MI, Pinela J, Kostić M, Soković MD, Ferreira ICFR, Barros L. The Effect of Nitrogen Input on Chemical Profile and Bioactive Properties of Green- and Red-Colored Basil Cultivars. Antioxidants (Basel) 2020. [PMID: 33114065 DOI: 10.3390/agronomy10111824] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
In the present study, three red-colored (Dark Opal, Basilico Rosso, and Red Basil) and one green-colored landrace (Mitikas) of basil (Ocimum basilicum L.) were grown under four nitrogen regimes, namely Control (no fertilizer added), 200 ppm, 400 ppm, and 600 ppm of nitrogen (N). Fresh yield varied depending on N input following a quadratic function in all four genotypes, and green basil performed better compared to the red cultivars. A significant interaction of genotype × N input was recorded for most of the chemical parameters measured. Tocopherols contents of leaves were consistently higher in plants that received 200 ppm of N and lower in those receiving 600 ppm of N, especially in Dark Opal and Red Basil cultivars. Polyunsaturated fatty acids (PUFA) were the major category of fatty acids and Red Basil had the lowest ratio of omega-6/omega 3 (0.29) and thus the best fatty acid profile. Polyphenols content was the highest in Red Basil and Dark Opal (25 mg/g of extract on average) and the lowest in Mitikas and decreased with increasing N input. Similarly, antioxidant activity was the highest in Dark Opal and Red Basil fertigated with 200 ppm of N, whereas all the leaf extracts tested had good antibacterial and antifungal activity. In conclusion, basil chemical and bioactive profile was significantly influenced by both genotype and N input. Red-colored basil, although less productive, had the best chemical profile, and moderate levels of N input may provide the best compromise between yield, nutritional value, and bioactivity for the species.
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Affiliation(s)
- Luís R O Cruz
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
- Departamento de Ciências da Saúde, Instituto Superior Politécnico Jean Piaget de Benguela, Estrada Nacional 100 Lobito, Benguela 1393, Angola
| | - Ângela Fernandes
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Francesco Di Gioia
- Department of Plant Science, Pennsylvania State University, 207 Tyson Building, University Park, PA 16802, USA
| | - Spyridon A Petropoulos
- Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Fytokou Street, N. Ionia, 38446 Magnissia, Greece
| | - Nikolaos Polyzos
- Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Fytokou Street, N. Ionia, 38446 Magnissia, Greece
| | - Maria Inês Dias
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - José Pinela
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Marina Kostić
- Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Marina D Soković
- Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Isabel C F R Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
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Lv S, Wang H, Yan Y, Ge M, Guan J. Quantification and confirmation of four aflatoxins using a LC-MS/MS QTRAP system in multiple reaction monitoring, enhanced product ion scan, and MS 3 modes. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2020; 26:63-77. [PMID: 31357879 DOI: 10.1177/1469066719866050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A simple, rapid, and efficient liquid chromatography tandem mass spectrometry (LC-MS/MS) method, operated in electrospray ionization and quadrupole linear ion trap modes, has been developed for the identification and structural characterization of aflatoxins in peanuts and its derivative products or bean sauce. Samples (5 g) were extracted with acetonitrile/water/formic acid (79:20:1, v/v). After centrifugation and dilution, the extracts were separated on a C18 analytical column by gradient elution (acetonitrile/0.2% formic acid) and analyzed by UPLC-MS/MS. External calibration was used for qualification. The developed multiple reaction monitoring-information-dependent acquisition-enhanced product ion method enabled quantification and confirmation of the analytes in a single run. Enhanced product ion mode was used for qualitative analysis, while multiple reaction monitoring mode was used for quantitative analysis. An in-house library was constructed for identification. Calibration curves showed good linearity with correlation coefficients (r) higher than 0.994. Limits of detection were determined to be below 0.26 µg kg-1 for most analytes. The recoveries for those substances were in the acceptable range of 80.2%-119.1%. A new LC-MS3 method was established for further confirmation. One pickled pepper peanut was found to contain aflatoxins B1, B2, and G1 with contents of 90.93, 26.64, and 1.92 µg kg-1, respectively.
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Affiliation(s)
- Shencong Lv
- Jiaxing Center for Disease Control and Prevention, Zhejiang, China
| | - Henghui Wang
- Jiaxing Center for Disease Control and Prevention, Zhejiang, China
| | - Yong Yan
- Jiaxing Center for Disease Control and Prevention, Zhejiang, China
| | - Miaohua Ge
- Jiaxing Center for Disease Control and Prevention, Zhejiang, China
| | - Jian Guan
- Jiaxing Center for Disease Control and Prevention, Zhejiang, China
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Saha S, Walia S, Sharma K, Banerjee K. Suitability of stationary phase for LC analysis of biomolecules. Crit Rev Food Sci Nutr 2019; 60:2856-2873. [PMID: 31621391 DOI: 10.1080/10408398.2019.1665494] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Biologically active compounds such as carotenoids/isoprenoids, vitamins, steroids, saponins, sugars, long chain fatty acids, and amino acids play a very important role in coordinating functions in living organisms. Determination of those substances is indispensable in advanced biological sciences. Engineered stationary phase in LC for the analysis of biomolecules has become easier with the development of chromatographic science. In general, C18 column is being used for routine analysis but specific columns are being used for specific molecule. Monolithic columns are found to have higher efficiency than normal column. Among recent introduction, triacontyl stationary phases, designed for the separation of carotenoid isomers, are widely used for the estimation of carotenoids. In comparison to conventional C18 phases, C30 phases exhibited superior shape selectivity for the separation of isomers of carotenoids. It is also found useful for better elution and analysis of tocopherols, vitamin K, sterols, and fatty acids. Vitamin K, E, and their isomers are also successfully resoluted and analyzed by using C30 column. Amino bonded phase column is specifically used for better elution of sugars, whereas phenyl columns are suitable for the separation and analysis of curcuminoids and taxol. Like triacontyl stationary phase, pentafluorophenyl columns are also used for the separation and analysis of carotenoids. Similarly, HILIC column are best suited for sugar analysis. All the stationary phases are made possible to resolute and analyze the target biomolecules better, which are the future of liquid chromatography. The present article focuses on the differential interaction between stationary phase and target biomolecules. The applicability of these stationary phases are reported in different matrices.
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Affiliation(s)
- Supradip Saha
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Suresh Walia
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Khushbu Sharma
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Jiang K, Gachumi G, Poudel A, Shurmer B, Bashi Z, El-Aneed A. The Establishment of Tandem Mass Spectrometric Fingerprints of Phytosterols and Tocopherols and the Development of Targeted Profiling Strategies in Vegetable Oils. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:1700-1712. [PMID: 31111414 DOI: 10.1007/s13361-019-02242-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/19/2019] [Accepted: 04/20/2019] [Indexed: 06/09/2023]
Abstract
Phytosterols and tocopherols are essential for plant biochemistry, and they possess beneficial health effects for humans. Evaluating the tandem mass spectrometric (MS/MS) behavior of phytosterols and tocopherols is needed for the development of a qualitative and quantitative method for these biologically active plant metabolites. Herein, the MS/MS dissociation behavior of phytosterols and tocopherols is elucidated to establish generalized MS/MS fingerprints. MS/MS and multistage (MS3) analysis revealed common fragmentation behavior among the four tested phytosterols, namely β-sitosterol, stigmasterol, campesterol, and brassicasterol. Similar analysis was conducted for the tocopherols (i.e., alpha (α), beta (β), gamma (γ), and delta (δ)). As such, a universal MS/MS fragmentation pathway for each group was successfully established for the first time. Based on the generalized MS/MS fragmentation behavior of phytosterols, diagnostic product ions were chosen for the development of profiling methods for over 20 naturally occurring phytosterols. A precursor ion scan-triggered-enhanced product ion scan (PIS-EPI) method was established. Due to enhanced chromatographic peaks, multiple ion monitoring-triggered-enhanced product ion scan (MIM-EPI) was employed for confirmation. The screening approach was applied successfully to identify blinded samples obtained from standard mixtures as well as sesame and olive oils. The oil samples contain other phytosterols, and their successful identification indicates that, the generalized MS/MS fragmentation behavior is applicable to various structures of phytosterols. A similar approach was attempted for tocopherols and was only hindered by the low concentration of these bioactive metabolites present in the oil samples.
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Affiliation(s)
- Kang Jiang
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada
| | - George Gachumi
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada
| | - Asmita Poudel
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada
| | - Bryn Shurmer
- Government of Canada, Canadian Food Inspection Agency, Saskatoon, SK, Canada
| | - Zafer Bashi
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada
| | - Anas El-Aneed
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada.
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10
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Arslan FN, Janssen HG. Chemometrics-Assisted Optimization of Beta-/Gamma-Tocol Separation on a C30 Stationary Phase in Reversed-Phase LC. Chromatographia 2018. [DOI: 10.1007/s10337-018-3624-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Zhao B, Shi Z, Yang X. Upgrading Algae Biocrude for a Low-Nitrogen-Containing Biofuel: Compositions, Intermediates, and Reaction Routes. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01405] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bingwei Zhao
- School of Energy and Power
Engineering, Energy and Environment International Centre, Beihang University, 37 Xueyuan Road, Haidian District Beijing 100191, P. R. China
| | - Ze Shi
- School of Energy and Power
Engineering, Energy and Environment International Centre, Beihang University, 37 Xueyuan Road, Haidian District Beijing 100191, P. R. China
| | - Xiaoyi Yang
- School of Energy and Power
Engineering, Energy and Environment International Centre, Beihang University, 37 Xueyuan Road, Haidian District Beijing 100191, P. R. China
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Górnaś P, Segliņa D, Lācis G, Pugajeva I. Dessert and crab apple seeds as a promising and rich source of all four homologues of tocopherol (α, β, γ and δ). Lebensm Wiss Technol 2014. [DOI: 10.1016/j.lwt.2014.05.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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13
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Górnaś P, Siger A, Pugajeva I, Czubinski J, Waśkiewicz A, Polewski K. New insights regarding tocopherols in Arabica and Robusta species coffee beans: RP-UPLC-ESI/MSn and NP-HPLC/FLD study. J Food Compost Anal 2014. [DOI: 10.1016/j.jfca.2014.08.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Yu G, Lu Y, Liu X, Wang WJ, Yang Q, Xing H, Ren Q, Li BG, Zhu S. Polyethylenimine-Assisted Extraction of α-Tocopherol from Tocopherol Homologues and CO2-Triggered Fast Recovery of the Extractant. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502568h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Shiping Zhu
- Department
of Chemical Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada
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15
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Shammugasamy B, Ramakrishnan Y, Manan F, Muhammad K. Rapid Reversed-Phase Chromatographic Method for Determination of Eight Vitamin E Isomers and γ-Oryzanols in Rice Bran and Rice Bran Oil. FOOD ANAL METHOD 2014. [DOI: 10.1007/s12161-014-9929-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Górnaś P, Siger A, Czubinski J, Dwiecki K, Segliņa D, Nogala-Kalucka M. An alternative RP-HPLC method for the separation and determination of tocopherol and tocotrienol homologues as butter authenticity markers: A comparative study between two European countries. EUR J LIPID SCI TECH 2014. [DOI: 10.1002/ejlt.201300319] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Paweł Górnaś
- Latvia State Institute of Fruit-Growing; Dobele Latvia
| | - Aleksander Siger
- Department of Food Biochemistry and Analysis; Poznan University of Life Sciences; Poznan Poland
| | - Jaroslaw Czubinski
- Department of Food Biochemistry and Analysis; Poznan University of Life Sciences; Poznan Poland
| | - Krzysztof Dwiecki
- Department of Food Biochemistry and Analysis; Poznan University of Life Sciences; Poznan Poland
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Factors affecting tocopherol contents in coffee brews: NP-HPLC/FLD, RP-UPLC-ESI/MSn and spectroscopic study. Eur Food Res Technol 2013. [DOI: 10.1007/s00217-013-2103-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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