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Ultrafast determination of vitamin E using LC–ESI–MS/MS for preclinical development of new nutraceutical formulations. Bioanalysis 2018; 10:215-227. [DOI: 10.4155/bio-2017-0095] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Aim: We proposed a rapid and high quality method to determine α-tocopherol (α-T) in different biopharmaceutical samples using liquid chromatography-diode array detector on-line ESI–MS/MS. Materials & methods: A working standard solution of α-T and internal standard, phenyl-5,7-dimethyl-d6-α-tocopherol, were used for optimization and validation of the method. Levels of α-T in nanoemulsions, serum and plasma samples were evaluated. Results & conclusion: Precision (1% for retention time, 5% for peak area and 3% for relative peak area), linearity range (among 0.625–20.0 μg ml-1), LOD and LOQ, accuracy and matrix effect were studied. The validated chromatographic method is presented as valuable analytical tool for the determination of α-tocopherol in loaded drug delivery systems and in biodistribution levels in blood samples.
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Morishima Y, Fujimoto C, Jinno K. Solid‐Phase Extraction Coupled to High Performance Liquid Chromatography Using a Micro Device Packed with Triacontyl‐Bonded Silica. J LIQ CHROMATOGR R T 2017. [DOI: 10.1081/jlc-200047209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Yoriko Morishima
- a School of Materials Science , Toyohashi University of Technology , Toyohashi , Japan
- b Department of Chemistry , Hamamatsu University School of Medicine , Hamamatsu , Japan
| | - Chuzo Fujimoto
- b Department of Chemistry , Hamamatsu University School of Medicine , Hamamatsu , Japan
| | - Kiyokatsu Jinno
- a School of Materials Science , Toyohashi University of Technology , Toyohashi , Japan
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Kumar A, Gupta M, Mazumder A, Poluri KM, Rao VK. Use of Box Behnken Design for Development of High Throughput Quantitative Proton Nuclear Magnetic Resonance Experiments for Industrial Applications. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ajeet Kumar
- Defence Research and Development Establishment, Gwalior 474002, India
| | - Manish Gupta
- Defence Research and Development Establishment, Gwalior 474002, India
| | - Avik Mazumder
- Defence Research and Development Establishment, Gwalior 474002, India
| | - Krishna Mohan Poluri
- Department
of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Vepa K. Rao
- Defence Research and Development Establishment, Gwalior 474002, India
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Smolarek PDC, Esmerino LA, Chibinski AC, Bortoluzzi MC, Dos Santos EB, Junior VAK. In vitro antimicrobial evaluation of toothpastes with natural compounds. Eur J Dent 2016; 9:580-586. [PMID: 26929699 PMCID: PMC4745242 DOI: 10.4103/1305-7456.172632] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES This in vitro study evaluated the antimicrobial effects of commercial toothpastes containing natural compounds. MATERIALS AND METHODS The study groups were divided based on the natural compound present in the toothpaste composition: Sorbitol (I), tocopherol (II), mint (III), cinnamon/mint (IV), propolis/melaleuca (V), mint/açai (VI), mint/guarana (VII), propolis (VIII), negative control (IX), and the positive control (X). The antimicrobial properties of the toothpastes were tested using the disk diffusion method against oral pathogens: Streptococcus mutans, Pseudomonas aeruginosa, and Enterococcus faecalis. The resulting inhibition halos were measured in millimeters. RESULTS The data indicated that the bacteria responded differently to the toothpastes (P < 0.0001). The diameters of the inhibition halos against S. mutans were in decreasing order of efficacy: Propolis/melaleuca > mint/guarana > mint/açai > sorbitol > tocopherol > cinnamon/mint > propolis > mint (P < 0.001 vs. negative control). E. faecalis showed variable responses to the dentifrices in the following order of decreasing efficacy: Mint/guarana > propolis > sorbitol > mint/açai > tocopherol > cinnamon/mint > mint = propolis/melaleuca = negative control. The product with the highest antimicrobial activity was mint/guarana, which was significantly different than propolis/melaleuca, mint, cinnamon/mint, and tocopherol and negative control (P < 0.001). The statistical analysis indicated that propolis, sorbitol, and mint/açai did not show any differences compared to mint/guarana (P > 0.05) and positive control (P > 0.05). P. aeruginosa was resistant to all dental gels tested including positive control. CONCLUSION The toothpastes with natural compounds have therapeutic potential and need more detailed searches for the correct clinic therapeutic application. The results from this study revealed differences in the antimicrobial activities of commercial toothpastes with natural compounds.
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Viñas P, Pastor-Belda M, Campillo N, Bravo-Bravo M, Hernández-Córdoba M. Capillary liquid chromatography combined with pressurized liquid extraction and dispersive liquid–liquid microextraction for the determination of vitamin E in cosmetic products. J Pharm Biomed Anal 2014; 94:173-9. [DOI: 10.1016/j.jpba.2014.02.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 02/03/2014] [Indexed: 01/30/2023]
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Viñas P, Bravo-Bravo M, López-García I, Hernández-Córdoba M. Quantification of β-carotene, retinol, retinyl acetate and retinyl palmitate in enriched fruit juices using dispersive liquid–liquid microextraction coupled to liquid chromatography with fluorescence detection and atmospheric pressure chemical ionization-mass spectrometry. J Chromatogr A 2013; 1275:1-8. [DOI: 10.1016/j.chroma.2012.12.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 12/10/2012] [Accepted: 12/11/2012] [Indexed: 11/16/2022]
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7
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Pyka A, Nabiałkowska D, Bober K, Dołowy M. COMPARISON OF NP-TLC AND RP-TLC WITH DENSITOMETRY TO QUANTITATIVE ANALYSIS OF TOCOPHEROL ACETATE IN PHARMACEUTICAL PREPARATION. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.591033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Alina Pyka
- a Department of Analytical Chemistry, Faculty of Pharmacy , Medical University of Silesia , Sosnowiec , Poland
| | - Danuta Nabiałkowska
- b Department of Genetic, Faculty of Biology and Environment Protection , Silesian University , Katowice , Poland
| | - Katarzyna Bober
- a Department of Analytical Chemistry, Faculty of Pharmacy , Medical University of Silesia , Sosnowiec , Poland
| | - Małgorzata Dołowy
- a Department of Analytical Chemistry, Faculty of Pharmacy , Medical University of Silesia , Sosnowiec , Poland
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Zhao Y, Lee MJ, Cheung C, Ju JH, Chen YK, Liu B, Hu LQ, Yang CS. Analysis of multiple metabolites of tocopherols and tocotrienols in mice and humans. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:4844-4852. [PMID: 20222730 PMCID: PMC2858244 DOI: 10.1021/jf904464u] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Tocopherols and tocotrienols, collectively known as vitamin E, are essential antioxidant nutrients. The biological fates and metabolite profiles of the different forms are not clearly understood. The objective of this study is to simultaneously analyze the metabolites of different tocopherols and tocotrienols in mouse and human samples. Using HPLC/electrochemical detection and mass spectrometry, 18 tocopherol-derived and 24 tocotrienol-derived side-chain degradation metabolites were identified in fecal samples. Short-chain degradation metabolites, in particular gamma- and delta-carboxyethyl hydroxychromans (CEHCs) and carboxymethylbutyl hydroxychromans (CMBHCs) were detected in urine, serum, and liver samples, with tocopherols additionally detected in serum and liver samples. The metabolite profiles of tocotrienols and tocopherols were similar, but new tocotrienol metabolites with double bonds were identified. This is the first comprehensive report describing simultaneous analysis of different side-chain metabolites of tocopherols and tocotrienols in mice and humans. Urinary metabolites may serve as useful biomarkers for the nutritional assessment of vitamin E.
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Affiliation(s)
- Yang Zhao
- Department of Chemical Biology, Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
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López-Sánchez M, Domínguez-Vidal A, Ayora-Cañada M, Molina-Díaz A. Assessment of dentifrice adulteration with diethylene glycol by means of ATR-FTIR spectroscopy and chemometrics. Anal Chim Acta 2008; 620:113-9. [DOI: 10.1016/j.aca.2008.05.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 05/14/2008] [Accepted: 05/14/2008] [Indexed: 10/22/2022]
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11
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Itthagarun A, King N, Rana R. Effects of child formula dentifrices on artificial caries like lesions using in vitro pH-cycling: preliminary results. Int Dent J 2007; 57:307-13. [DOI: 10.1111/j.1875-595x.2007.tb00138.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Lanina SA, Toledo P, Sampels S, Kamal-Eldin A, Jastrebova JA. Comparison of reversed-phase liquid chromatography–mass spectrometry with electrospray and atmospheric pressure chemical ionization for analysis of dietary tocopherols. J Chromatogr A 2007; 1157:159-70. [PMID: 17512939 DOI: 10.1016/j.chroma.2007.04.058] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2007] [Revised: 04/21/2007] [Accepted: 04/25/2007] [Indexed: 11/26/2022]
Abstract
ESI and APCI ionization techniques in both negative and positive ion modes were evaluated for simultaneous LC-MS analysis of the four tocopherol homologues (alpha, beta, gamma and delta). The ESI and APCI ionization of tocopherols in positive ion mode was not efficient and proceeded via two competitive mechanisms, with the formation of protonated pseudo-molecular ions and molecular ions, which adversely influenced the repeatability of MS signal. Ionization in negative ion mode in both ESI and APCI was more efficient as it only produced target deprotonated pseudo-molecular ions. The APCI in negative ion mode showed larger linearity range, lower detection limits and was less sensitive to the differences in chemical structure of analytes and nature of applied solvents than negative ion ESI. Negative ion APCI was, therefore, chosen for the development of LC-MS method for simultaneous determination of the four tocopherols in foods. A baseline separation of the tocopherols was achieved on novel pentafluorophenyl silica-based column Fluophase PFP. The use of methanol-water (95:5, v/v) as a mobile phase was preferable to the use of acetonitrile-water due to considerable gain in MS signal. The limits of quantifications were 9 ng/mL for alpha-tocopherol, 8 ng/mL for beta- and gamma- and 7.5 ng/mL for delta-tocopherol when 2 microL was injected. This method was successfully applied to determination of tocopherols in sunflower oil and milk.
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Affiliation(s)
- Svetlana A Lanina
- Department of Food Science, Division of Food Chemistry, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden.
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Li K, Li H, Liu L, Hashi Y, Maeda T, Lin JM. Solid-phase extraction with C30 bonded silica for analysis of polycyclic aromatic hydrocarbons in airborne particulate matters by gas chromatography–mass spectrometry. J Chromatogr A 2007; 1154:74-80. [PMID: 17459395 DOI: 10.1016/j.chroma.2007.03.129] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Revised: 03/29/2007] [Accepted: 03/30/2007] [Indexed: 11/29/2022]
Abstract
A solid-phase extraction (SPE) method using triacontyl bonded silica (C30) as sorbent was developed for the determination of 16 US Environmental Protection Agency polycyclic aromatic hydrocarbons (PAHs) in airborne particulate matters quantitatively by gas chromatography-mass spectrometry (GC-MS). Optimization experiments were conducted using spiked standard aqueous solution of PAHs and real airborne particulates samples aiming to obtain highest SPE recoveries and extraction efficiency. Factors were studied in SPE procedures including the concentration of organic modifier, flow rate of sample loading and elution solvents. The ultrasonication time and solvents were also investigated. Recoveries were in the range of 68-107% for standard PAHs aqueous solution and 61-116% for real spiked sample. Limits of detection (LODs) and limits of quantification (LOQs) with standard solution were in the range of 0.0070-0.21 microgL(-1) and 0.022-0.67 microgL(-1), respectively. The optimized method was successfully applied to the determination of 16 PAHs in real airborne particulate matters.
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Affiliation(s)
- Ke Li
- Department of Chemistry, Tsinghua University, Beijing 100084, China
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Green A, Alcock J, Cox T, Abraham P, Savage D, McGrady M. Delivery of vitamin E acetate and sunflower oil to gums from fluoride toothpaste containing 0.1% vitamin E acetate and 0.5% sunflower oil. Int Dent J 2007. [DOI: 10.1111/j.1875-595x.2007.tb00153.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Philpotts C, Harding C, Carlile M, Sadler C, Wright J. Ex vivo delivery and penetration of α-tocopherol acetate and linoleic acid to gingival tissue from a toothpaste formulation. Int Dent J 2007. [DOI: 10.1111/j.1875-595x.2007.tb00154.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Barker SA. Matrix solid phase dispersion (MSPD). ACTA ACUST UNITED AC 2007; 70:151-62. [DOI: 10.1016/j.jbbm.2006.06.005] [Citation(s) in RCA: 242] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2006] [Accepted: 06/30/2006] [Indexed: 10/24/2022]
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Schroeder FC, Gronquist M. Extending the scope of NMR spectroscopy with microcoil probes. Angew Chem Int Ed Engl 2007; 45:7122-31. [PMID: 16991159 DOI: 10.1002/anie.200601789] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Capillary NMR (CapNMR) spectroscopy has emerged as a major breakthrough for increasing the mass-sensitivity of NMR spectroscopic analysis and enabling the combination of NMR spectroscopy with other analytical techniques. Not only is the acquisition of high-sensitivity spectra getting easier but the quality of CapNMR spectra obtained in many small-molecule applications exceeds what can be accomplished with conventional designs. This Minireview discusses current CapNMR technology and its applications for the characterization of mass-limited, small-molecule and protein samples, the rapid screening of small-molecule or protein libraries, as well as hyphenated techniques that combine CapNMR with other analytical methods.
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Affiliation(s)
- Frank C Schroeder
- Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 250 Longwood Avenue, Boston, MA 02115, USA.
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Schroeder FC, Gronquist M. Größere Möglichkeiten für die NMR-Spektroskopie durch Mikrospulenprobenköpfe. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200601789] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Heudi O, Trisconi MJ, Blake CJ. Simultaneous quantification of Vitamins A, D3 and E in fortified infant formulae by liquid chromatography–mass spectrometry. J Chromatogr A 2004; 1022:115-23. [PMID: 14753777 DOI: 10.1016/j.chroma.2003.09.062] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A novel method for the simultaneous quantification of Vitamins A, D3 and E in fortified infant formulae has been developed using isocratic normal-phase liquid chromatography with positive atmospheric pressure chemical ionization mass spectrometry (LC-APCI-MS). Food products were saponified and the vitamins were extracted by solid-phase extraction (SPE) on a Chromabond XTR cartridge. Quantification of Vitamins D3 and E were performed with Vitamin D2 and 5,7-dimethyltocol (DMT) as internal standards (IS), respectively while no IS was used for Vitamin A. Detection of the vitamins was made in the selected ion monitoring (SIM) mode. MS calibration curves were linear between 0.15 and 12 mg/l for Vitamin A, 5-400 microg/l for Vitamin D3 and 0.25-20 mg/l for Vitamin E with regression coefficient r2 > 0.996 and the limits of detection were below 1.4 ng. The repeatability (CV) obtained on a reference dietetic infant formula was 2.3% for Vitamin A, 2.6% for Vitamin E and 5.9% for Vitamin D3. The between-day variations (CV) over 6 days were in the ranges of 2.4-6.9% for the three vitamins. The mean recoveries from a reference infant formula spiked with all three vitamins ranged from 96 to 105% with a relative standard error less than 9%. The applicability of the method was demonstrated by analyzing a set of infant formula and infant cereals; similar results were obtained with the LC-MS method and reference HPLC methods.
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Affiliation(s)
- Olivier Heudi
- Department of Quality Assurance, Nestle Research Center, Nestec Ltd., Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland.
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Current literature in journal of mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2003; 38:347-356. [PMID: 12644999 DOI: 10.1002/jms.418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
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Kalman A, Mujahid C, Mottier P, Heudi O. Determination of alpha-tocopherol in infant foods by liquid chromatography combined with atmospheric pressure chemical ionisation mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2003; 17:723-727. [PMID: 12661027 DOI: 10.1002/rcm.970] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A novel, sensitive and specific method for the quantification of alpha-tocopherol in two infant foods (milk and cereals) using liquid chromatography on-line with positive atmospheric pressure chemical ionisation mass spectrometry detection (LC/APCI-MS) has been developed. The samples were first saponified in order to eliminate fats and to transform tocopherol esters into free tocopherol, followed up by a liquid-liquid extraction of the analyte in petroleum benzine/diisopropyl ether (75:25, v/v) prior to injection onto the LC system. For the quantification, deuterium-labelled tocopherol was used as internal standard and the samples were monitored in selected ion monitoring (SIM) mode. Calibration curves between 1-40 microg/mL of alpha-tocopherol showed a good linear correlation (r(2) = 0.99994), and the detection limit was determined to be 2.5 ng/mL. The within-day and between-day precision were determined for several dietetic infant formulae and certified reference samples, and found to be below 3.5%. The accuracy determined on a Nestlé reference sample (milk powder) was calculated to be 115.2 +/- 1.2%, which confirms the robustness of the proposed method. This study shows that single quadrupole LC/MS can be applied for the quantification of vitamins in food and the method offers better sensitivity and selectivity than traditional method such as LC-UV. This would simplify the preparation of the food samples and consequently enhance the vitamin analysis throughput in the food area.
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Affiliation(s)
- Andras Kalman
- Department of Quality Assurance, Nestlé Research Center, Nestec Ltd, Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland.
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