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Xie L, Li C, Deng G, Li D, Kang X. A polypyrrole-based solid phase extraction for determination of eight B-complex vitamins from infant formula. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-00959-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2
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Murwani R, Cahyo Kumoro A, Ambariyanto A, Naumova EN. Nutrient composition of underutilized skeins of flying fish (Hirundichthys oxycephalus): The new and better egg whites. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2020.103461] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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4
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Mohammed JK, Mahdi AA, Ahmed MI, Abraha B, Admassu H, Wang H. Phenolic compounds and the physicochemical, nutritional, antioxidant, and functional characteristics of peel, flesh, and kernel of Medemia argun (argun palm) fruit. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2019. [DOI: 10.1007/s11694-019-00147-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Gurum (Citrullus lanatus var. Colocynthoide) seed: lipid, amino acid, mineral, proximate, volatile compound, sugar, vitamin composition and functional properties. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2019. [DOI: 10.1007/s11694-019-00155-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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6
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Xie L, Huang J, Han Q, Song Y, Liu P, Kang X. Solid phase extraction with Polypyrrole nanofibers for simultaneously determination of three water-soluble vitamins in urine. J Chromatogr A 2019; 1589:30-38. [DOI: 10.1016/j.chroma.2018.12.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 11/19/2018] [Accepted: 12/27/2018] [Indexed: 11/17/2022]
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7
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Bäurer S, Guo W, Polnick S, Lämmerhofer M. Simultaneous Separation of Water- and Fat-Soluble Vitamins by Selective Comprehensive HILIC × RPLC (High-Resolution Sampling) and Active Solvent Modulation. Chromatographia 2018. [DOI: 10.1007/s10337-018-3615-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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8
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Khaksari M, Mazzoleni LR, Ruan C, Song P, Hershey ND, Kennedy RT, Burns MA, Minerick AR. Detection and quantification of vitamins in microliter volumes of biological samples by LC-MS for clinical screening. AIChE J 2018. [DOI: 10.1002/aic.16345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Maryam Khaksari
- Chemical Advanced Resolution Methods (ChARM) Laboratory; Michigan Technological University; Houghton Michigan 49931
- Dept. of Chemistry; Michigan Technological University; Houghton Michigan 49931
| | - Lynn R. Mazzoleni
- Chemical Advanced Resolution Methods (ChARM) Laboratory; Michigan Technological University; Houghton Michigan 49931
- Dept. of Chemistry; Michigan Technological University; Houghton Michigan 49931
| | - Chunhai Ruan
- Metabolomics Core; University of Michigan Medical School; Ann Arbor Michigan 48105
| | - Peng Song
- Dept. of Chemistry; University of Michigan; Ann Arbor Michigan 48109
| | - Neil D. Hershey
- Dept. of Chemistry; University of Michigan; Ann Arbor Michigan 48109
| | - Robert T. Kennedy
- Dept. of Chemistry; University of Michigan; Ann Arbor Michigan 48109
| | - Mark A. Burns
- Dept. of Chemical Engineering; University of Michigan; Ann Arbor Michigan 48109
| | - Adrienne R. Minerick
- Dept. of Chemical Engineering; Michigan Technological University; Houghton Michigan 49931
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9
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Stability and assessment of amino acids in parenteral nutrition solutions. J Pharm Biomed Anal 2018; 147:125-139. [DOI: 10.1016/j.jpba.2017.07.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/12/2017] [Accepted: 07/15/2017] [Indexed: 10/19/2022]
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10
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Ulusoy S, Akçay M. Simultaneous Determination of Vitamins B1 and B2 in Food Samples by Modified Cloud Point Extraction Method and HPLC-DAD. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0996-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Sunarić S, Lalić J, Spasić A. Simultaneous Determination of Alpha-Tocopherol and Alpha-Tocopheryl Acetate in Dairy Products, Plant Milks and Health Supplements by Using SPE and HPLC Method. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0943-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Asfaram A, Ghaedi M, Dashtian K. Ultrasound assisted combined molecularly imprinted polymer for selective extraction of nicotinamide in human urine and milk samples: Spectrophotometric determination and optimization study. ULTRASONICS SONOCHEMISTRY 2017; 34:640-650. [PMID: 27773291 DOI: 10.1016/j.ultsonch.2016.06.018] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 06/14/2016] [Accepted: 06/15/2016] [Indexed: 06/06/2023]
Abstract
Ultrasound-assisted dispersive solid phase microextraction followed by UV-vis spectrophotometer (UA-DSPME-UV-vis) was designed for extraction and preconcentration of nicotinamide (vitamin B3) by HKUST-1 metal organic framework (MOF) based molecularly imprinted polymer (MIP). This new material was characterized by FTIR and FE-SEM techniques. The preliminary Plackett-Burman design was used for screening and subsequently the central composite design justifies significant terms and possible construction of mathematical equation which give the individual and cooperative contribution of variables like HKUST-1-MOF-NA-MIP mass, sonication time, temperature, eluent volume, pH and vortex time. Accordingly the optimum condition was set as: 2.0mg HKUST-1-MOF-NA-MIP, 200μL eluent and 5.0min sonication time in center points other variables were determined as the best conditions to reach the maximum recovery of the analyte. The UA-DSPME-UV-vis method performances like excellent linearity (LR), limits of detection (LOD), limits of quantification of 10-5000μgL-1 with R2 of 0.99, LOD (1.96ngmL-1), LOQ (6.53μgL-1), respectively show successful and accurate applicability of the present method for monitoring analytes with within- and between-day precision of 0.96-3.38%. The average absolute recoveries of the nicotinamide extracted from the urine, milk and water samples were 95.85-101.27%.
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Affiliation(s)
- Arash Asfaram
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
| | - Mehrorang Ghaedi
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran.
| | - Kheibar Dashtian
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
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13
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Midttun Ø, McCann A, Aarseth O, Krokeide M, Kvalheim G, Meyer K, Ueland PM. Combined Measurement of 6 Fat-Soluble Vitamins and 26 Water-Soluble Functional Vitamin Markers and Amino Acids in 50 μL of Serum or Plasma by High-Throughput Mass Spectrometry. Anal Chem 2016; 88:10427-10436. [DOI: 10.1021/acs.analchem.6b02325] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Øivind Midttun
- Bevital AS, Laboratory Building,
Ninth Floor, Jonas Lies veg 87, 5021 Bergen, Norway
| | - Adrian McCann
- Bevital AS, Laboratory Building,
Ninth Floor, Jonas Lies veg 87, 5021 Bergen, Norway
| | - Ove Aarseth
- Bevital AS, Laboratory Building,
Ninth Floor, Jonas Lies veg 87, 5021 Bergen, Norway
| | - Marit Krokeide
- Bevital AS, Laboratory Building,
Ninth Floor, Jonas Lies veg 87, 5021 Bergen, Norway
| | - Gry Kvalheim
- Bevital AS, Laboratory Building,
Ninth Floor, Jonas Lies veg 87, 5021 Bergen, Norway
- Department
of Clinical Science, University of Bergen, 5021 Bergen, Norway
| | - Klaus Meyer
- Bevital AS, Laboratory Building,
Ninth Floor, Jonas Lies veg 87, 5021 Bergen, Norway
| | - Per M. Ueland
- Department
of Clinical Science, University of Bergen, 5021 Bergen, Norway
- Laboratory
of Clinical Biochemistry, Haukeland University Hospital, 5021 Bergen, Norway
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14
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Development of a New Methodology for Determination of Vitamin B9 at Trace Levels by Ultrasonic-Assisted Cloud Point Extraction Prior to HPLC. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0647-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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15
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Al-Farga A, Zhang H, Siddeeg A, Shamoon M, V M Chamba M, Al-Hajj N. Proximate composition, functional properties, amino acid, mineral and vitamin contents of a novel food: Alhydwan (Boerhavia elegana Choisy) seed flour. Food Chem 2016; 211:268-73. [PMID: 27283631 DOI: 10.1016/j.foodchem.2016.05.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 04/28/2016] [Accepted: 05/02/2016] [Indexed: 10/21/2022]
Abstract
Alhydwan (Boerhavia elegana Choisy) seed flour was evaluated for chemical and nutritional composition, and functional properties in a pursuit to identify an innovative plant with high nutraceuticals value which could be exploited in other food applications. The flour was found to be rich in dietary fiber (30.13%), protein (14.60%), crude fat (11.49%), carbohydrates (30.77%), and ash (6.88%) and encompassed adequate amounts of essential amino acids and minerals, whereas, sucrose constituted 71.3% of total sugar contents. Vitamins analysis revealed that flour is rich in water-soluble vitamins such as Thiamin (B1), Riboflavin (B2) and Niacin (B3), to the amounts of 19.3, 8.2 and 2.3mg/100g, respectively. Results on functional properties demonstrated high water and oil absorption capacities of 6.31 and 2.43g/g, respectively. Foaming capacity, foam stability and emulsion capacity were 9.35%, 6.90%, and 29.60%, respectively. It can be concluded that alhydwan is an excellent food material with a high nutritional value.
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Affiliation(s)
- Ammar Al-Farga
- State Key Laboratory of Food Science and Technology & School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China
| | - Hui Zhang
- State Key Laboratory of Food Science and Technology & School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China.
| | - Azhari Siddeeg
- State Key Laboratory of Food Science and Technology & School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China; Department of Food Science and Technology, Faculty of Engineering and Technology, University of Gezira, Wad Medani, Sudan
| | - Muhammad Shamoon
- State Key Laboratory of Food Science and Technology & School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China
| | - Moses V M Chamba
- State Key Laboratory of Food Science and Technology & School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China; Department of Physics and Biochemical Sciences, University of Malawi - The Polytechnic, Private Bag 303, Chichiri, Blantyre 3, Malawi
| | - Nabil Al-Hajj
- State Key Laboratory of Food Science and Technology & School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, PR China
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16
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Ulusoy S, Acıdereli H, Erdoğan S, İbrahim Ulusoy H. A new approach to the determination of folic acid at trace levels: using a Fe(iii)-folic acid complex to amplify analytical signal. RSC Adv 2016. [DOI: 10.1039/c6ra05286j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A fast, efficient, and cost-effective, and environmental friendly analytical methodology was developed for preconcentration and determination of trace folic acid in food samples prior to HPLC-DAD.
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Affiliation(s)
- Songül Ulusoy
- Department of Biomedical Engineering
- Faculty of Technology
- Cumhuriyet University
- Sivas
- Turkey
| | - Hilal Acıdereli
- Department of Biochemistry
- Faculty of Pharmacy
- Cumhuriyet University
- Sivas
- Turkey
| | - Selim Erdoğan
- Department of Analytical Chemistry
- Faculty of Pharmacy
- İnonu University
- Malatya
- Turkey
| | - Halil İbrahim Ulusoy
- Department of Analytical Chemistry
- Faculty of Pharmacy
- Cumhuriyet University
- Sivas
- Turkey
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17
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Dołowy M, Pyka A. Validation of an RPHPTLC-Densitometric Method Using Silica Gel 60 RP18WF254 for Simultaneous Determination of Nicotinamide in Selected Pharmaceutical Formulations. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2015; 2015:631025. [PMID: 25834751 PMCID: PMC4365381 DOI: 10.1155/2015/631025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/13/2015] [Indexed: 06/04/2023]
Abstract
This research study describes the applicability of silica gel 60 RPW18F254 plates for the development and validation of new, simple, economic, accurate, and precise RPHPTLC-densitometric method suitable for the quantification of nicotinamide (as Vitamin PP) in three marketed preparations. The mobile phase used was methanol-water in volume composition 3 : 7. Detection wavelength was 200 nm. The proposed method was validated according to ICH guidelines and also based on Ferenczi-Fodor and Konieczka reports. Results were found to be linear over a range of 1.00 to 2.00 μg/spot. Limit of detection (LOD) and limit of quantification (LOQ) were 0.15 μg/spot and 0.45 μg/spot, respectively. The percent content of nicotinamide in the investigated preparations was found to be 99.2% (Product 1), 99.3% (Product 2), and 99.4% (Product 3). Developed method is accurate and precise (CV < 3%) and may be successfully applied for the quality control of pharmaceutical formulations containing nicotinamide in the presence of its derivatives, such as N,N-diethylnicotinamide, N-methylnicotinamide, and nicotinic acid.
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Affiliation(s)
- Małgorzata Dołowy
- Institute of Analytical Chemistry, Department of General and Analytical Chemistry, School of Pharmacy and the Division of Laboratory Medicine, Medical University of Silesia in Katowice, 4 Jagiellońska Street, 41-200 Sosnowiec, Poland
| | - Alina Pyka
- Institute of Analytical Chemistry, Department of General and Analytical Chemistry, School of Pharmacy and the Division of Laboratory Medicine, Medical University of Silesia in Katowice, 4 Jagiellońska Street, 41-200 Sosnowiec, Poland
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18
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Płonka J. Methods of biological fluids sample preparation - biogenic amines, methylxanthines, water-soluble vitamins. Biomed Chromatogr 2014; 29:1-20. [DOI: 10.1002/bmc.3353] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 08/22/2014] [Accepted: 09/02/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Joanna Płonka
- Silesian University of Technology; Faculty of Chemistry, Department of Inorganic, Analytical Chemistry and Electrochemistry; Strzody 7 Str. 44-100 Gliwice Poland
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19
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Ferreiro-Vera C, Priego-Capote F, Luque de Castro MD. An approach for quantitative analysis of vitamins D and B9 and their metabolites in human biofluids by on-line orthogonal sample preparation and sequential mass spectrometry detection. Analyst 2013; 138:2146-55. [DOI: 10.1039/c3an36394e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Simultaneous quantification of niacin and its three main metabolites in human plasma by LC-MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 904:107-14. [PMID: 22884475 DOI: 10.1016/j.jchromb.2012.07.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 07/23/2012] [Accepted: 07/24/2012] [Indexed: 11/24/2022]
Abstract
A sensitive and specific LC-MS/MS method for the simultaneous quantification of niacin (NA) and its three main metabolites nicotinamide (NAM), nicotinuric acid (NUA) and N-methyl-2-pyridone-5-carboxamide (2-Pyr) in human plasma has been developed and validated. Plasma samples (200 μL) were prepared by deproteinization with acetonitrile (500 μL), then the supernatant after centrifugation was evaporated and reconstituted. Chromatography was performed on a phenomenex synergi hydro-RP column with an isocratic elution of methanol-0.1% formic acid (5:95, v/v). The full separation of all analytes was achieved within 9 min. Multiple-reaction monitoring (MRM) using the fragmentation transitions of m/z 124.1 → 80.1, 123.1 → 80.0, 181.0 → 79.0 and 153.1 → 110.2 in positive electrospray ionization (ESI) mode was performed to quantify NA, NAM, NUA and 2-Pyr, respectively. The calibration curves were linear over the concentration range of 2.0-3000 ng/mL for NA and NUA, 10.0-1600 ng/mL for NAM and 50.0-5000 ng/mL for 2-Pyr. This method has been validated in accordance with the US FDA guidelines for bioanalytical method development and applied to the determination of NA and its three main metabolites in Chinese subjects following a single oral dose of niacin extended-release and simvastatin 1000 mg/20mg. In particular, because of the endogenous NAM and 2-Pyr in human plasma, the concentrations of NAM and 2-Pyr in human plasma after dosing were determined by subtracting blank values of them.
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21
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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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22
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Christopherson MJ, Yoder KJ, Hill JT. Hydrophilic Interaction Liquid Chromatographic (HILIC)/Ion Exchange Separation of Picolinic and Nicotinic Acids. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826070600915114] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | - Kenton J. Yoder
- a Upsher‐Smith Laboratories, Inc. , Analytical Development Department , Maple Grove, Minnesota, USA
| | - Jason T. Hill
- a Upsher‐Smith Laboratories, Inc. , Analytical Development Department , Maple Grove, Minnesota, USA
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23
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Paixa˜o JA, Campos JM. Determination of Fat Soluble Vitamins by Reversed‐Phase HPLC Coupled with UV Detection: A Guide to the Explanation of Intrinsic Variability. J LIQ CHROMATOGR R T 2011. [DOI: 10.1081/jlc-120017913] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- J. A. Paixa˜o
- a Departamento de Nutriça˜o , Universidade Federal de Pernambuco, Cid Universitária , Recife , PE , 50730‐700 , Brazil
| | - J. M. Campos
- a Departamento de Nutriça˜o , Universidade Federal de Pernambuco, Cid Universitária , Recife , PE , 50730‐700 , Brazil
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24
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Dabre R, Azad N, Schwämmle A, Lämmerhofer M, Lindner W. Simultaneous separation and analysis of water- and fat-soluble vitamins on multi-modal reversed-phase weak anion exchange material by HPLC-UV. J Sep Sci 2011; 34:761-72. [DOI: 10.1002/jssc.201000793] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 01/07/2011] [Accepted: 01/07/2011] [Indexed: 11/10/2022]
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25
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Inamadugu JK, Damaramadugu R, Mullangi R, Ponneri V. Simultaneous determination of niacin and its metabolites--nicotinamide, nicotinuric acid and N-methyl-2-pyridone-5-carboxamide--in human plasma by LC-MS/MS and its application to a human pharmacokinetic study. Biomed Chromatogr 2011; 24:1059-74. [PMID: 20853461 DOI: 10.1002/bmc.1406] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An LC-MS/MS method for the simultaneous quantitation of niacin (NA) and its metabolites, i.e. nicotinamide (NAM), nicotinuric acid (NUA) and N-methyl-2-pyridone-5-carboxamide (2-Pyr), in human plasma (1 mL) was developed and validated using nevirapine as an internal standard (IS). Extraction of the NA and its metabolites along with the IS from human plasma was accomplished using a simple liquid-liquid extraction. The chromatographic separation of NA, NAM, NUA, 2-Pyr and IS was achieved on a Hypersil-BDS column (150 x 4.6 mm, 5 microm) column using a mobile phase consisting of 0.1% formic acid : acetonitrile (20:80 v/v) at a flow rate of 1 mL/min. The total run time of analysis was 2 min and elution of NA, NAM, NUA, 2-Pyr and IS occurred at 1.37, 1.46, 1.40, 1.06 and 1.27 min, respectively. A detailed validation of the method was performed as per the FDA guidelines and the standard curves were found to be linear in the range of 100-20000 ng/mL for NA; 10-1600 ng/mL for NUA and NAM and 50-5000 ng/mL for 2-Pyr with mean correlation coefficient of ≥ 0.99 for each analyte. The method was sensitive, specific, precise, accurate and suitable for bioequivalence and pharmacokinetic studies. The developed assay method was successfully applied to a pharmacokinetic study in humans.
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Affiliation(s)
- Jaswanth Kumar Inamadugu
- Analytical and Environmental Chemistry Division, Department of Chemistry, Sri Venkateswara University, Tirupati-517 502, India
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26
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Sander LC, Sharpless KE, Wise SA, Nelson BC, Phinney KW, Porter BJ, Rimmer CA, Thomas JB, Wood LJ, Yen JH, Duewer DL, Atkinson R, Chen P, Goldschmidt R, Wolf WR, Ho IP, Betz JM. Certification of vitamins and carotenoids in SRM 3280 multivitamin/multielement tablets. Anal Chem 2010; 83:99-108. [PMID: 21128589 DOI: 10.1021/ac101953u] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new multivitamin/multielement dietary supplement Standard Reference Material (SRM) has been issued by the National Institute of Standards and Technology (NIST), with certified and reference concentration values for 13 vitamins, 24 elements, and 2 carotenoids. The constituents have been measured by multiple analytical methods with data contributed by NIST and by collaborating laboratories. This effort included the first use of isotope dilution mass spectrometry for value assignment of both fat-soluble vitamins (FSVs) and water-soluble vitamins (WSVs). Excellent agreement was obtained among the methods, with relative expanded uncertainties for the certified concentration values typically ranging from <2% to 15% for vitamins.
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Affiliation(s)
- L C Sander
- Analytical Chemistry Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, MS 8311, Gaithersburg, Maryland 20899-8392, United States
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Mullangi R, Srinivas NR. Niacin and its metabolites: role of LC-MS/MS bioanalytical methods and update on clinical pharmacology. An overview. Biomed Chromatogr 2010; 25:218-37. [PMID: 21204112 DOI: 10.1002/bmc.1522] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Accepted: 08/11/2010] [Indexed: 01/08/2023]
Abstract
Niacin (nicotinic acid), although an old drug, has seen a sudden surge in popularity for treatment of lipid disorders and other associated clinical conditions for the prevention of cardiovascular risk. Also, there has been considerable interest in clarifying the role of metabolic pathways of niacin in explaining the tolerability/adverse affect profile of the agent. Hence, it has become very important to quantify/monitor the levels of niacin and its metabolites in various clinical studies. This review describes the recent trends in the bioanalysis of niacin and its metabolites, where HPLC and LC-MS/MS assays have been successfully employed to measure the drug levels in various biological matrices arising from preclinical and clinical studies. In addition, this review encompass various considerations such as internal standard selection, extraction schemes, matrix effect, selectivity evaluation and optimization of mass spectral conditions to enable the development of sound bioanalytical methods for niacin alone or niacin along with its metabolites. Recent updates pertaining to the clinical pharmacology of niacin and ongoing debate for the clarification of adverse effects are also provided. Overall LC-MS/MS methods have proven to be choice of bioanalytical method for the quantification of niacin alone or with its metabolites in both preclinical and clinical studies.
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Affiliation(s)
- Ramesh Mullangi
- Drug Metabolism and Pharmacokinetics, Jubilant Biosys Ltd, Industrial Suburb, Yeshwanthpur, Bangalore-560 022, India.
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28
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Profiling of different bioactive compounds in functional drinks by high-performance liquid chromatography. J Chromatogr A 2008; 1188:234-41. [DOI: 10.1016/j.chroma.2008.02.054] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Revised: 01/25/2008] [Accepted: 02/14/2008] [Indexed: 11/20/2022]
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29
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Li XY, Zhang QL, Lian HZ, Xu JJ, Chen HY. Separation of three water-soluble vitamins by poly(dimethylsiloxane) microchannel electrophoresis with electrochemical detection. J Sep Sci 2007; 30:2320-5. [PMID: 17668908 DOI: 10.1002/jssc.200700155] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A method for rapid separation and sensitive determination of three water-soluble vitamins, pyridoxine, ascorbic acid (VC), and p-aminobenzoic acid (PABA) has been developed by PDMS microchannel electrophoresis integrated with amperometric detection. After treatment of the microchip with oxygen plasma, the peak shapes of the three analytes were essentially improved. Pyridoxine, VC, and PABA were well separated within only 80 s in a running buffer of 20 mM borate solution (pH 8.5). Good linearity was obtained within the concentration range of 2-200 microM for the three water-soluble vitamins. The detection limits were 1.0 microM for pyridoxine and VC, and 1.5 microM for PABA. The proposed method has been successfully applied to real human urine sample, without solid phase extraction, with recoveries of 80-122% for the three water-soluble vitamins.
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Affiliation(s)
- Xiang-Yun Li
- Key Lab of Analytical Chemistry for Life Science, Ministry of Education, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, China
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30
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Lin CH, Wu HL, Huang YL. Combining high-performance liquid chromatography with on-line microdialysis sampling for the simultaneous determination of ascorbyl glucoside, kojic acid, and niacinamide in bleaching cosmetics. Anal Chim Acta 2007; 581:102-7. [PMID: 17386432 DOI: 10.1016/j.aca.2006.08.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2006] [Revised: 07/31/2006] [Accepted: 08/01/2006] [Indexed: 11/26/2022]
Abstract
We have used on-line microdialysis sampling coupled with high-performance liquid chromatography and UV-vis detection to simultaneously determine the contents of ascorbyl glucoside (AA-2G), kojic acid (KA), and niacinamide (VitB(3)) in commercial bleaching cosmetics. Our results indicate that AA-2G, KA, and VitB(3) separated well within 4.5 min on a reverse-phase Hypersil Fluophase PFP column when eluting with 0.020 M phosphate buffer solution in 40% (v/v) methanol at pH 5.5. The calibration curves were linear over the ranges 0.068-304, 0.071-284, and 0.024-488 microg mL(-1) for AA-2G, KA, and VitB(3), respectively, with correlation coefficients for the linear regression analyses falling within the range 0.9982-0.9999. The detection limits for AA-2G, KA, and VitB(3) were 0.01, 0.01, and 0.007 microg mL(-1), respectively. The detection wavelength was robust when the levels of the analytes in the samples were high (0.1-2%). The analytes were all detected using ultraviolet light (254 nm). The compounds diffuse through the membrane more readily when KA and VitB(3) are in their molecular forms and AA-2G is ionized. The recoveries were in the range 92-106% with good reproducibility (R.S.D.=3.9-8.7%). We used this procedure to assay six commercially available bleaching cosmetics; our results confirmed not only the precision of the method but also the claims made on the labels of the cosmetics. This approach provides a very simple means to determine the contents of AA-2G, KA, and VitB(3) in various dosages in bleaching cosmetics.
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Affiliation(s)
- Cheng-Hui Lin
- Department of Biological Engineering, Yung Ta Institute of Technology, Pingtung, Taiwan
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31
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Chen P, Wolf WR. LC/UV/MS-MRM for the simultaneous determination of water-soluble vitamins in multi-vitamin dietary supplements. Anal Bioanal Chem 2006; 387:2441-8. [PMID: 17091235 DOI: 10.1007/s00216-006-0615-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2006] [Revised: 06/02/2006] [Accepted: 06/09/2006] [Indexed: 10/23/2022]
Abstract
The purpose of this study was to optimize chromatographic and detection conditions for the simultaneous determination of water-soluble vitamins in multi-vitamin dietary supplements using a single chromatographic run. An approach using liquid chromatography with diode array and/or mass spectrometry for quantitation of seven B-complex vitamins [thiamine (B(1)), riboflavin (B(2)), nicotinamide (B(3)), pyridoxine (B(6)) pyridoxine, biotin, pantothenic acid, and folic acid] in multi-vitamin/multi-mineral daily supplements is described. This approach utilizes a reversed phase C18 column (4 mum; i.d.: 250x2.0 mm) with a gradient mobile elution profile, performed at a flow rate of 0.25 ml/min. After a 5-min isocratic elution at 100% A (0.1% formic acid in water), a linear gradient to 50% A and 50% B (0.1% formic acid in acetonitrile) at 15 min and then to 5% A and 95% B at 17 min was employed. Detection was performed with a photodiode array detector (DAD) in sequence with a triple-quad mass spectrometer in the multiple reaction mode (MS-MRM). Although good chromatographic separation of ascorbic acid was also obtained in extracts from multi-vitamin/multi-mineral supplements, the ascorbic acid could not be quantified properly due to rapid oxidation catalyzed by the minerals. This method was initially applied to determine water-soluble vitamins in representative multi-vitamin/multi-mineral tablets following the extraction of ground samples with a phosphate buffer (10 mM, pH 2.5). For multi-vitamin supplement tablets, this approach does not require any sample clean-up/pre-concentration steps except for centrifugation and filtration of the extract.
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Affiliation(s)
- Pei Chen
- United States Department of Agricultural Research Service, Beltsville Human Nutrition Research Center, Food Composition Laboratory, Beltsville, MD, 20705, USA.
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32
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Marszałł ML, Lebiedzińska A, Czarnowski W, Szefer P. High-performance liquid chromatography method for the simultaneous determination of thiamine hydrochloride, pyridoxine hydrochloride and cyanocobalamin in pharmaceutical formulations using coulometric electrochemical and ultraviolet detection. J Chromatogr A 2005; 1094:91-8. [PMID: 16257294 DOI: 10.1016/j.chroma.2005.07.091] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2005] [Revised: 07/18/2005] [Accepted: 07/25/2005] [Indexed: 11/23/2022]
Abstract
The method for the simultaneous determination of thiamine hydrochloride, pyridoxine hydrochloride and cyanocobalamin by high-performance liquid chromatography (HPLC) with coulometric electrochemical and UV detections is presented. The retention time of vitamins was repeatedly determined by isocratic elution using 0.05 M phosphate buffer-10% methanol and 0.018 M trimethylamine (1 ml min(-1), pH 3.55) as mobile phase with the Supelco LC 18 column 5 microm (25 cm x 4.6 mm). The specificity of the method was demonstrated by the retention characteristics, coulometric electrochemical and UV detection. The limits of detection of thiamine, pyridoxine and cyanocobalamin were: 9.2, 2.7 and 0.08 ng/ml, respectively. The method was characterized also by wide concentration range, high sensitivity and good accuracy (99.6-102.7%). The repeatability of the method was evaluated at different level of concentration of vitamins and the relative standard deviation was below 4.5%. The method was successfully applied for the quantification of Vitamins B1, B6 and B12 in pharmaceutical preparations and dietary supplements.
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Affiliation(s)
- Marcin Leszek Marszałł
- Department of Toxicology, Medical University of Gdańsk, Al. Gen. J. Hallera 107, Gdańsk 80-416, Poland
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Heudi O, Fontannaz P. Determination of vitamin B5 in human urine by high-performance liquid chromatography coupled with mass spectrometry. J Sep Sci 2005; 28:669-72. [PMID: 15912738 DOI: 10.1002/jssc.200500048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In the present work, we have developed a simple and rapid liquid chromatography/mass spectrometry (LC/MS) method for the identification and quantification of vitamin B5 in human urine. Urine was spiked with vitamin B5 internal standard, hopantenic acid (HOPA), and then diluted with the LC mobile phase prior to its analysis by LC/MS. The quantification was performed in single ion monitoring mode. The calibration curve was linear (r2 = 0.999) between 0.25 to 10 microg/mL. With a limit of detection of 0.1 microg/mL the method was sensitive enough to determine low levels of vitamin B5 in urine. The overall quantitative efficiency of the method was evaluated by spiking urine samples with four different concentrations of vitamin B5; the intra-assay coefficient of variation was below 5% and the recoveries were between 96 to 108%. The results of the present study show that the proposed method is selective and sensitive enough for the quantification of vitamin B5 in urine.
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Affiliation(s)
- Olivier Heudi
- Quality and Safety Department, Nestlé Research Center, Nestec Ltd., Vers-Chez-les-Blanc, 1000 Lausanne 26, Switzerland.
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Pfuhl P, Kärcher U, Häring N, Baumeister A, Tawab MA, Schubert-Zsilavecz M. Simultaneous determination of niacin, niacinamide and nicotinuric acid in human plasma. J Pharm Biomed Anal 2005; 36:1045-52. [PMID: 15620531 DOI: 10.1016/j.jpba.2004.08.033] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2004] [Accepted: 08/09/2004] [Indexed: 11/18/2022]
Abstract
A sensitive, specific, accurate, and reproducible HPLC/MS-method for the simultaneous quantitative determination of niacin (NA) and its main metabolites niacinamide (NAM) and nicotinuric acid (NUR) in human plasma using chinolin-3-carboxylic acid as an internal standard was developed and validated according to international guidelines for method validation. All analytes and the internal standard were separated from acidified plasma by solid phase extraction. Afterwards the extracted samples were analyzed by HPLC/MS in the positive electrospray ionization mode (ESI) and selected ion monitoring (SIM). The total run time was 7 min between injections. The assay had a lower limit of quantification of 50.0 ng/mL for each analyte using 1 mL of plasma. The calibration curves were linear in the measured range between 50.0 and 750 ng/mL plasma. The overall precision and accuracy for all concentrations of quality controls and standards was better than 15%. No indications were found for possible instabilities of niacin, niacinamide and nicotinuric acid in plasma at -20 degrees C, in the extraction solvent or after repeated thawing/freezing cycles. In stabilities were observed in whole blood and in plasma at room temperature. The recovery of the extraction method ranged from 86 to 89% for the three analytes.
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Affiliation(s)
- P Pfuhl
- AAI Deutschland GmbH and Co KG, Wegener street 13, 89231 Neu-Ulm, Germany
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Chienthavorn O, Smith RM, Saha S, Wilson ID, Wright B, Taylor SD, Lenz EM. Superheated water chromatography-nuclear magnetic resonance spectroscopy and mass spectrometry of vitamins. J Pharm Biomed Anal 2004; 36:477-82. [PMID: 15522520 DOI: 10.1016/j.jpba.2004.07.023] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2004] [Accepted: 07/18/2004] [Indexed: 10/26/2022]
Abstract
The water-soluble vitamins, pyridoxine, riboflavin, and thiamine, were separated by reversed-phase liquid chromatography using hot or superheated water as the mobile phase and were detected using a range of detectors, including ultraviolet and fluorescence spectroscopy and mass spectrometry. By using deuterium oxide as the eluent, direct on-line nuclear magnetic resonance spectra could be obtained with minimal spectral interference from the mobile phase. Some of the compounds showed deuterium exchange of alkyl-protons when separated at high temperatures.
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Affiliation(s)
- Orapin Chienthavorn
- Department of Chemistry, Loughborough University, Loughborough, Leics LE11 3TU, UK
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36
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Chatzimichalakis PF, Samanidou VF, Verpoorte R, Papadoyannis IN. Development of a validated HPLC method for the determination of B-complex vitamins in pharmaceuticals and biological fluids after solid phase extraction. J Sep Sci 2004; 27:1181-8. [PMID: 15537074 DOI: 10.1002/jssc.200401858] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An HPLC method was developed for the simultaneous determination of seven water-soluble vitamins, viz. thiamine, riboflavin, nicotinic acid, nicotinamide, pyridoxine, cyanocobalamin, and folic acid, in multivitamin pharmaceutical formulations and biological fluids (blood serum and urine). Separation was achieved at ambient temperature on a Phenomenex Luna C18 (150 x 4.6 mm) analytical column. Gradient elution was performed starting at a 99:1 A:B v/v composition, where A: 0.05 M CH3COONH4/CH3OH (99/1) and B: H2O/CH3OH (50/50), at a flow rate of 0.8 mL/min. After a 4-min isocratic elution the composition was changed to 100% of B in 18 min and elution continued isocratically for 8 min. Detection was performed with a photodiode array detector at 280 nm. Each vitamin was quantitatively determined at its maximum wavelength. Spectral comparison was used for peak identification in real samples. Detection limits were in the range of 1.6-3.4 ng, per 20-microL injection, while linearity held up to 25 ng/microL. Accuracy, intra-day repeatability (n = 6), and inter-day precision (n = 7) were found to be satisfactory. Theobromine (2 ng/microL) was used as internal standard. Sample preparation of biological fluids was performed by SPE on Supelclean LC-18 cartridges with methanol-water 85/15 v/v as eluent. Extraction recoveries from biological matrices ranged from 84.6% to 103.0%.
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Affiliation(s)
- Pavlos F Chatzimichalakis
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, GR-54 124 Thessaloniki, Greece
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Esteve-Romero J, Capella-Peiró ME, Monferrer-Pons L, Gil-Agustí M. Micellar liquid chromatography in clinical chemistry: application to the monitorization of B6 vitamins. Clin Chim Acta 2004; 348:69-77. [PMID: 15369738 DOI: 10.1016/j.cccn.2004.05.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2004] [Revised: 04/29/2004] [Accepted: 05/03/2004] [Indexed: 10/26/2022]
Abstract
BACKGROUND A micellar reversed-phase liquid chromatographic procedure was developed for the determination of B6 group vitamins, i.e. pyridoxine, pyridoxal and pyridoxamine, in human serum. METHODS Chromatographic conditions used were a C18 column, isocratic mode, flow-rate of 1 ml/min and UV-detection at 290 nm. Optimization of the composition of the mobile phase was performed using an interpretative strategy. RESULTS After modeling, the composition of the selected mobile phase was 150 mM sodium dodecyl sulphate (SDS)--2% (v/v) pentanol-dihydrogenphosphate buffer 10 mM at pH 3. In this mobile phase, serum samples were injected without pretreatment and analysis time was below 14 min. Calibrations for the three vitamins were linear, with coefficient regression better than 0.999, and intra- and inter-day precision, achieved according to ICH, offering values below 4.3% and 3.2%, respectively. The method was applied to the determination of the B6 vitamins in spiked serum samples, with recoveries around 100%, and in the pharmacokinetic determination of pyridoxine half-life in serum, which was found to be 47.5 +/- 3.2 min (n = 5). The procedure was also applied for the analysis of pyridoxine in human serum spiked with several pharmaceutical preparations that contain other drugs which do not produce any kind of interference. Finally, solutions of B6 vitamins kept at -201 degrees C are stable for up to 3 months. CONCLUSIONS Using the method proposed here, with an SDS-pentanol mobile phase, it is possible to carry out the fast sensitive determination of B6 vitamins in serum following direct injection, without sample pretreatment.
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Capella-Peiró ME, Carda-Broch S, Monferrer-Pons L, Esteve-Romero J. Micellar liquid chromatographic determination of nicotinic acid and nicotinamide after precolumn König reaction derivatization. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.05.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chatzimichalakis PF, Samanidou VF, Papadoyannis IN. Development of a validated liquid chromatography method for the simultaneous determination of eight fat-soluble vitamins in biological fluids after solid-phase extraction. J Chromatogr B Analyt Technol Biomed Life Sci 2004; 805:289-96. [PMID: 15135103 DOI: 10.1016/j.jchromb.2004.03.009] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2003] [Revised: 01/19/2004] [Accepted: 03/08/2004] [Indexed: 10/26/2022]
Abstract
In the present study, a simple and rapid reversed-phase HPLC procedure has been developed for the simultaneous determination of eight fat-soluble vitamins (retinol, menadione, menaquinone, delta-tocopherol, cholecalciferol, alpha-tocopherol, alpha-tocopherol acetate and phylloquinone) in biological fluids: blood serum and urine. The analytical column, Phenomenex Luna C18 (150 mm x 4.6 mm) 3 microm, was operating at ambient temperature. Mobile phase consisted of a mixture of CH3OH-CH3CN delivered using a linear gradient, starting with a composition of 50-50% v/v and ending at 30-70% at a flow rate of 1.3 ml/min. Xanthophyll was used as internal standard (2 ng/microl). Detection and identification was performed using a photodiode array detector. Eluent monitoring was achieved at 280 nm for vitamins and 450 nm for the internal standard. However, quantitation was performed at maximum wavelength for each vitamin. Detection limits were found in the range of 1.4-6.6 ng per 20-microl injected samples, while linearity held up to 25 ng/microl. The statistical evaluation of the method was examined performing intra-day (n = 6) and inter-day calibration (n = 7) and was found to be satisfactory, with high accuracy and precision results. The biological fluids were treated using solid-phase extraction cartridges, to remove all endogenous interferences from sample matrix. The solid-phase extraction protocol was optimized in terms of retention and elution. High extraction recoveries from biological matrices: blood serum and urine, (average recovery ranging between 95 and 97.6% for blood serum and between 94.2 and 95.8% for urine) were achieved for the eight fat-soluble vitamins, using Cyclohexyl J.T. Baker SPE cartridges with methanol as eluent, requiring small volumes, 100 microl of blood serum and 100 microl of urine.
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Viñas P, López-Erroz C, Balsalobre N, Hernández-Córdoba M. Reversed-phase liquid chromatography on an amide stationary phase for the determination of the B group vitamins in baby foods. J Chromatogr A 2003; 1007:77-84. [PMID: 12924553 DOI: 10.1016/s0021-9673(03)00977-4] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A liquid chromatographic method for the separation and determination of several water-soluble vitamins of the B group is proposed. The procedure is based on the use of a new amide-based stationary phase, which avoids the need of using the ion-pair technique, leading to narrower peaks and a simpler mobile phase. Analyses were performed by gradient elution with acetonitrile-phosphate buffer as mobile phase and using a photodiode array detector. Specificity was demonstrated by the retention characteristics, UV spectra and by comparing the peak purity index with commercial standards. Linearity, precision, recovery and sensitivity were satisfactory. The vitamins are extracted from the baby food using a single digestion with hydrochloric acid followed by enzymatic digestion with taka-diastase. The method was successfully applied to the determination of nine vitamins: thiamine, riboflavin, nicotinamide, nicotinic acid, pyridoxine, pyridoxal, folic acid, cyanocobalamine and inosine in different baby foods as infant formulas, cereals and fruit products. Validation was performed using two certified reference materials.
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Affiliation(s)
- Pilar Viñas
- Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, E-30071 Murcia, Spain
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Monferrer-Pons L, Capella-Peiró ME, Gil-Agustí M, Esteve-Romero J. Micellar liquid chromatography determination of B vitamins with direct injection and ultraviolet absorbance detection. J Chromatogr A 2003; 984:223-31. [PMID: 12564693 DOI: 10.1016/s0021-9673(02)01845-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A micellar reversed-phase liquid chromatographic procedure was developed for the control of five water-soluble vitamins, B (nicotinamide), B1 (thiamine), B2 (riboflavin), B6 (pyridoxine and pyridoxamine), in multivitamin pharmaceutical formulations (capsules, pills and syrups). Optimization procedure includes studies about the composition of the mobile phase (sodium dodecyl sulphate and the modifiers propanol, butanol or pentanol), flow-rate and temperature. Chromatographic analysis of all vitamins was carried out using a single mobile phase of 0.1 M SDS-4% (v/v) pentanol at pH 3, in a C18 column in isocratic mode, and UV-detection at 270, 290 and 325 nm. The flow-rates selected were 1.0 ml/min in the interval 0 to 6 min, and 2.0 ml/min until the end of the chromatogram and temperature was 45 degrees C. In the micellar liquid chromatographic system, the samples were injected without pretreatment, and the analysis time was below 12 min. Repeatabilities and intermediate precision were achieved according to ICH, and were below 5%. When the method is applied to real samples, the amount found with respect to the declared compositions were within the 91-105% range. These results were similar to those obtained with a conventional 60:40 (v/v) methanol-water mixture for some of the vitamins, but with the advantage of use a single mobile phase for the analyses of the five vitamins, with direct injection of the samples and reduced toxicity, flammability, environmental impact and cost of the micellar-pentanol solutions.
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Li K. Simultaneous determination of nicotinamide, pyridoxine hydrochloride, thiamine mononitrate and riboflavin in multivitamin with minerals tablets by reversed-phase ion-pair high performance liquid chromatography. Biomed Chromatogr 2002; 16:504-7. [PMID: 12474212 DOI: 10.1002/bmc.192] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A reversed-phase ion-pair high performance liquid chromatographic method (HPLC) has been developed and validated for the routine analysis of nicotinamide, pyridoxine hydrochloride, thiamine mononitrate and riboflavin in multivitamin with minerals tablets. HPLC separation of the vitamins was performed on a Hypersil C(18) column and detected by ultraviolet absorbance at 280 nm. The use of methanol-aqueous 0.5% acetic acid solution (18:82, v/v; containing 2.5 mM sodium hexanesulfonate, pH = 2.8) as the mobile phase at a flow-rate of 1.2 mL/min enables the baseline separation of the four analytes free from interferences with isocratic elution at 30 degrees C. The analysis time was 17 min per injection. The method was linear in the ranges of 5-90, 2.5-90, 5-95 and 25-450 micro g/mL for thiamine mononitrate, riboflavin, pyridoxine hydrochloride and nicotinamide, respectively. The average coefficients of variation of within- and between-day assays were 2.2 and 3.6% for thiamine mononitrate, 1.8 and 2.4% for riboflavin, 1.3 and 1.7% for pyridoxine hydrochloride and 1.0 and 1.5% for nicotinamide, respectively. The average recoveries of thiamine mononitrate, riboflavin, pyridoxine hydrochloride and nicotinamide were 97.0, 97.2, 98.9 and 100.4% for the tablets, respectively. The method has been successfully applied to the simultaneous determination of nicotinamide, pyridoxine hydrochloride, thiamine mononitrate and riboflavin in multivitamin with minerals tablets.
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Affiliation(s)
- Ke Li
- The Center of Medical Laboratory Science, Jinling Hospital, Clinical School of Medical College, Nanjing University, No. 305 East Zhongshan Road, Jiangsu, People's Republic of China
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Markopoulou CK, Kagkadis KA, Koundourellis JE. An optimized method for the simultaneous determination of vitamins B1, B6, B12 in multivitamin tablets by high performance liquid chromatography. J Pharm Biomed Anal 2002; 30:1403-10. [PMID: 12408932 DOI: 10.1016/s0731-7085(02)00456-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple, precise, rapid and selective HPLC-RP method has been developed for the simultaneous determination of thiamine hydrochloride (B(1)) 150 mg, pyridoxine hydrochloride (B(6)) 150 mg, and hydroxocobalamine chloride (B(12)) 0.150 mg in multivitamin tablets. The method uses a Hypersil-BDS C(18) reversed phase column and gradient elution. The aqueous mobile phase contained 0.015% triethylamine adjusted to pH 2.7 with 1 N sulfuric acid and acetonitrile. Separation and quantitation was achieved by changing the proportion of the system linearly with a time-schedule programme. Detection was carried out using a dual-beam UV detector set at 280, 350 nm. Good linearity was observed between the concentration of the analytes and peak area (r=0.9999, 0.9998). Sample preparation was relatively simple whereas excipients present in the dosage forms did not interfere with the peaks of interest. Recovery of the compound from the B(1), B(6), B(12) was quantitative.
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Affiliation(s)
- C K Markopoulou
- VIANEX Pharmaceutical Manufacturers, Tatoiou str. 18km, Athens-Lamia National Road, 146 71, N. Erithrea, Greece
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Determination of water-soluble vitamins in pharmaceutical preparations by reversed-phase high-performance liquid chromatography with a mobile phase containing sodium dodecylsulphate andn-propanol. Chromatographia 2002. [DOI: 10.1007/bf02492140] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Garbis SD, Melse-Boonstra A, West CE, van Breemen RB. Determination of folates in human plasma using hydrophilic interaction chromatography-tandem mass spectrometry. Anal Chem 2001; 73:5358-64. [PMID: 11816560 DOI: 10.1021/ac010741y] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Folic acid is an essential nutrient, and folate deficiency is associated with a variety of disorders including neural tube defects (during pregnancy) and heart disease. A fast, sensitive, and robust HPLC-tandem mass spectrometry (LC-MS-MS) method was developed for the quantification of free folic acid, tetrahydrofolate, 5'-methyltetrahydrofolate, and 5'-formyltetrahydrofolate in human plasma. Sample preparation required only acetonitrile precipitation of proteins followed by filtration instead of solid-phase extraction or solvent-solvent extraction as in other methods. The rapid and streamlined sample handling procedure minimized degradation of the highly unstable folate species. Hydrophilic interaction chromatography was used for additional sample cleanup on-line, and baseline separation and detection of all four folate species was achieved in less than 30 min. The folate species were detected using negative ion electrospray-tandem mass spectrometry with multiple reaction monitoring of the diagnostic fragment ions of each deprotonated molecule. The predominately organic (hydrophobic) solvent system combined with the microbore flow rate (50 microL/min) used for the chromatography resulted in enhanced electrospray signal response compared to reversed-phase HPLC using a wider bore column. The recovery of all folate species (from spiked plasma) was >97% over a concentration range from 300 pg/L to 12 mg/L with intraday precision (RSD, n = 5) of 3.7-6.5%. Stability studies were carried out for spiked samples in order to define storage and handling conditions. The folic acid limit of quantification (LOQ) in human plasma was 80 pmol/L +/- 10%, and the limit of detection (LOD) was 37.5 pmol/L. The LOQ and LOD for tetrahydrofolate, 5'-methyltetrahydrofolate, and 5'-formyltetrahydrofolate were 1250, 400, and 360 pmol/L of plasma and 425, 165, and 140 pmol/L of plasma, respectively.
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Affiliation(s)
- S D Garbis
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 60612, USA
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Müller LD. Improved extraction methods for avoiding the interference of copper in the LC determination of ascorbic acid in multivitamin-mineral tablets. J Pharm Biomed Anal 2001; 25:985-94. [PMID: 11377083 DOI: 10.1016/s0731-7085(01)00372-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A rapid sample extraction procedure for the determination of ascorbic acid (AA) by high performance liquid chromatography (HPLC) in multivitamin-mineral formulations containing interfering copper has been developed. The method takes special precautions to prevent degradation of AA in contact with high concentrations of interfering elements such as copper. Sample preparation involved addition of pyrogallol, citric acid solution and short time extraction (5 min) under an atmosphere of nitrogen to prevent oxidation of AA. Another sample cleanup based on extraction of the multivitamin-mineral tablet with the extraction solution as described above, but with addition of strong cation exchange sorbent, was also developed. The copper and other minerals in the formula were retained on an ion exchange sorbent and thus represses the speed of oxidation of AA. Extracts of multivitamin-mineral tablets were analyzed by ion-pair reversed phase HPLC and UV-diode array detection. Ten multivitamin formulations containing copper were analyzed by the two proposed methods. The analytical results of AA obtained using the simple sample extraction method and the method involving addition of cation exchange were 89-115% and 95-112%, respectively, of declared concentrations. The parameters for the validation of the methods are given.
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Affiliation(s)
- L D Müller
- Municipality of Oslo, Department of Public Health, Division of Food Control, Maridalsveien 3, 0178, Oslo, Norway.
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Li HB, Chen F. Simultaneous determination of twelve water- and fat-soluble vitamins by high-performance liquid chromatography with diode array detection. Chromatographia 2001. [DOI: 10.1007/bf02492256] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Li HB, Chen F. Simultaneous determination of nine water-soluble vitamins in pharmaceutical preparations by high-performance liquid chromatography with diode array detection. J Sep Sci 2001. [DOI: 10.1002/1615-9314(20010401)24:4<271::aid-jssc271>3.0.co;2-l] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Iwaki M, Murakami E, Kakehi K. Chromatographic and capillary electrophoretic methods for the analysis of nicotinic acid and its metabolites. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 2000; 747:229-40. [PMID: 11103908 DOI: 10.1016/s0378-4347(99)00486-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Methods for the assay of nicotinic acid (NiAc) and its metabolites in biological fluids using high-performance liquid chromatography (HPLC) and capillary electrophoresis (CE) are reviewed. Most of the references cited in this review concern HPLC methods. A few CE methods that have been recently reported are also included. As these compounds are relatively polar and have a wide range of physico-chemical properties, the sample pre-treatment or clean-up process prior to analysis is included. Most HPLC methods using an isocratic elution system allow determination of a single or few metabolites, but gradient HPLC methods enable simultaneous determination of five to eight compounds. Simultaneous determination of NiAc including many metabolites in a single run can be achieved by CE. We also discuss the pharmacokinetics of NiAc and some of its metabolites.
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Affiliation(s)
- M Iwaki
- Faculty of Pharmaceutical Sciences, Kinki University, Osaka, Japan
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50
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Moreno P, Salvadó V. Determination of eight water- and fat-soluble vitamins in multi-vitamin pharmaceutical formulations by high-performance liquid chromatography. J Chromatogr A 2000; 870:207-15. [PMID: 10722078 DOI: 10.1016/s0021-9673(99)01021-3] [Citation(s) in RCA: 154] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work, a reversed-phase high-performance liquid chromatographic procedure has been developed for the determination of water-soluble vitamins (thiamine hydrochloride, pyridoxine hydrochloride, nicotinamide, riboflavin phosphoric ester and cyanocobalamine) and fat-soluble vitamins (retinol palmitate, cholecalciferol, alpha-tocopherol acetate) in multi-vitamin pharmaceutical formulations. The sample treatment proposed consists of a solid-phase extraction with C18 AR cartridges that allow the separation of fat-soluble vitamins, which were retained on the sorbent, from water-soluble vitamins. Afterwards, the water-soluble vitamins were analysed by HPLC on a Nova-Pack C18 (150x3.9 mm, 4 microm) analytical column, using CH3OH-0.05 M CH3COONH4 as mobile phase. The chromatographic analysis of the fat-soluble vitamins was carried out after their sequential elution with methanol and chloroform from C18 sorbent, on the above column. The mobile phase employed was MeOH-CH2CN (95:5, v/v) working at a flow-rate of 2 ml min(-1) in isocratic mode. The solid-phase extraction for these vitamins had been previously optimised. The experimental variables studied were: application volume, elution solvents and cleaning solutions. The UV-Vis detection of vitamins was made at 270 nm for all the water-soluble vitamins (362 nm for B12) and 285 nm for the water-soluble and fat-soluble vitamins present in real samples at different concentration levels. The accuracy of the method was tested obtaining an average recovery ranging between 78 and 116%.
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Affiliation(s)
- P Moreno
- Area de Química Analítica, Departament de Química, Universitat de Girona, Girona, Spain
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