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Jeong D, Lee WY. Impedimetric detection of galactose based on a galactose-binding lectin, Ricinus communis agglutinin I (RCA120). J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lopa NS, Rahman MM, Ahmed F, Ryu T, Lei J, Choi I, Kim DH, Lee YH, Kim W. A chemically and electrochemically stable, redox-active and highly sensitive metal azolate framework for non-enzymatic electrochemical detection of glucose. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.03.081] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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3
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Effects of USDA quality grade and cooking on water-soluble precursors of beef flavor. Meat Sci 2018; 146:122-130. [PMID: 30142508 DOI: 10.1016/j.meatsci.2018.08.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 08/09/2018] [Accepted: 08/09/2018] [Indexed: 11/23/2022]
Abstract
The objective of the current study was to determine the effects of three USDA quality grades and cooking on the water-soluble flavor precursors of beef Longissimus lumborum. Raw and cooked steaks from beef strip loins of USDA Prime (PR; n = 8), Low-Choice (LC; n = 8), and Standard (ST; n = 8) were analyzed for extractable free amino acids, reducing sugars, and other nitrogenous organic compounds (NOCs). Overall, two-way quality grade × cooking interactions were found for the contents of most water-soluble precursors (Pquality grade × cooking < 0.05), which were greater in raw LC and ST and were changed more in ST and LC steaks by cooking. The magnitude of those changes suggested that cystine, a dimer of cysteine, glucose, and glucose 6-phosphate might play more important roles in beef flavor development than previously thought.
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A compact photometer based on metal-waveguide-capillary: application to detecting glucose of nanomolar concentration. Sci Rep 2015; 5:10476. [PMID: 26020222 PMCID: PMC4447070 DOI: 10.1038/srep10476] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 04/14/2015] [Indexed: 11/08/2022] Open
Abstract
Trace analysis of liquid samples has wide applications in life science and environmental monitor. In this paper, a compact and low-cost photometer based on metal-waveguide-capillary (MWC) was developed for ultra-sensitive absorbance detection. The optical-path can be greatly enhanced and much longer than the physical length of MWC, because the light scattered by the rippled and smooth metal sidewall can be confined inside the capillary regardless of the incident-angle. For the photometer with a 7 cm long MWC, the detection limit is improved ~3000 fold compared with that of commercial spectrophotometer with 1 cm-cuvette, owing to the novel nonlinear optical-path enhancement as well as fast sample switching, and detecting glucose of a concentration as low as 5.12 nM was realized with conventional chromogenic reagent.
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Boutegrabet L, Kanawati B, Gebefügi I, Peyron D, Cayot P, Gougeon RD, Schmitt-Kopplin P. Attachment of chloride anion to sugars: mechanistic investigation and discovery of a new dopant for efficient sugar ionization/detection in mass spectrometers. Chemistry 2012; 18:13059-67. [PMID: 22936644 DOI: 10.1002/chem.201103788] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 05/18/2012] [Indexed: 11/05/2022]
Abstract
A new method for efficient ionization of sugars in the negative-ion mode of electrospray mass spectrometry is presented. Instead of using strongly hydrophobic dopants such as dichloromethane or chloroform, efficient ionization of sugars has been achieved by using aqueous HCl solution for the first time. This methodology makes it possible to use hydrophilic dopants, which are more appropriate for chromatographic separation techniques with efficient sugar ionization and detection in mass spectrometry. The interaction between chloride anions and monosaccharides (glucose and galactose) was studied by DFT in the gas phase and by implementing the polarizable continuum model (PCM) for calculations in solution at the high B3LYP/6-31+G(d,p)//B3LYP/6-311+G(2d,p) level of theory. In all optimized geometries of identified [M+Cl](-) anions, a non-covalent interaction exists. Differences were revealed between monodentate and bidentate complex anions, with the latter having noticeably higher binding energies. The calculated affinity of glucose and galactose toward the chloride anion in the gas phase and their chloride anion binding energies in solution are in excellent agreement with glucose and galactose [M+Cl](-) experimental intensity profiles that are represented as a function of the chloride ion concentration. Density functional calculations of gas-phase affinities toward chloride anion were also performed for the studied disaccharides sucrose and gentiobiose. All calculations are in excellent agreement with the experimental data. An example is introduced wherein HCl was used to effectively ionize sugars and form chlorinated adduct anions to detect sugars and glycosylated metabolites (anthocyanins) in real biological systems (Vitis vinifera grape extracts and wines), whereas they would not have been easily detectable under standard infusion electrospray mass spectrometry conditions as deprotonated species.
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Affiliation(s)
- Lemia Boutegrabet
- UMR PAM, Université de Bourgogne/AgroSup Dijon, PAPC team Rue Claude Ladrey BP 27877, 21078 Dijon Cedex, France
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Alwael H, Connolly D, Paull B. Liquid chromatographic profiling of monosaccharide concentrations in complex cell-culture media and fermentation broths. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2011; 3:62-69. [PMID: 32938111 DOI: 10.1039/c0ay00516a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A solid phase extraction, liquid chromatography and fluorescence (SPE-RPLC-FL) based protocol for the determination of free monosaccharides in highly complex raw material powders and formulated fermentation feedstocks and broths has been developed. Monosaccharides within sample extracts were derivatised pre-column with anthranilic acid and the derivatives separated using reversed-phase LC with fluorescence detection. Using a 2.1 mm × 50 mm 1.8 µm Zorbax Eclipse XDB-C18 column, a flow rate of 0.4 mL min-1 and an acetonitrile gradient in a sodium acetate buffer (pH 4.3; 50 mmol L-1) the baseline resolution of glucosamine, mannosamine, galactosamine, galactose, mannose, glucose, ribose, xylose, fucose and sialic acid within 20 minutes was achieved. Pre-column derivatisation involved combining a 30 mg mL-1 solution of anthranilic acid in a 1 : 1 ratio with an aqueous standard prior to injection. Standard analytical performance criteria were used for evaluation purposes, with the method found to exhibit LOD's as low as 10 fmol, and be linear and precise (%RSD < 2.2% (n = 7). The method was applied to the analysis of a range of highly complex biopharmaceutical production samples, including yeastolate powders, chemically defined media and in-process fermentation broth samples. Sample preparation involved passing an aqueous sample through a C18 solid phase extraction cartridge to trap hydrophobic peptides and vitamins, with recovery of all test sugars exceeding 90%. Finally, standard statistical analysis was performed on samples taken from different lots in order to estimate lot-to-lot variability.
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Affiliation(s)
- Hassan Alwael
- Centre for Bioanalytical Sciences, National Centre for Sensor Research, Dublin City University, Glasnevin, Dublin, 9, Ireland
| | - Damian Connolly
- Irish Separation Science Cluster, National Centre for Sensor Research, Dublin City University, Glasnevin, Dublin, 9, Ireland.
- Centre for Bioanalytical Sciences, National Centre for Sensor Research, Dublin City University, Glasnevin, Dublin, 9, Ireland
| | - Brett Paull
- Irish Separation Science Cluster, National Centre for Sensor Research, Dublin City University, Glasnevin, Dublin, 9, Ireland.
- Centre for Bioanalytical Sciences, National Centre for Sensor Research, Dublin City University, Glasnevin, Dublin, 9, Ireland
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A novel immobilization multienzyme glucose fluorescence capillary biosensor. Biosens Bioelectron 2010; 25:1382-8. [DOI: 10.1016/j.bios.2009.10.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2009] [Revised: 10/03/2009] [Accepted: 10/22/2009] [Indexed: 11/23/2022]
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8
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Miyagi M, Yokoyama H, Hibi T. Sugar microanalysis by HPLC with benzoylation: Improvement via introduction of a C-8 cartridge and a high efficiency ODS column. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 854:286-90. [PMID: 17540624 DOI: 10.1016/j.jchromb.2007.04.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2007] [Revised: 03/12/2007] [Accepted: 04/24/2007] [Indexed: 10/23/2022]
Abstract
An HPLC protocol for sugar microanalysis based on the formation of ultraviolet-absorbing benzoyl chloride derivatives was improved. Here, samples were prepared with a C-8 cartridge and analyzed with a high efficiency ODS column, in which porous spherical silica particles 3 microm in diameter were packed. These devices allowed us to simultaneously quantify multiple sugars and sugar alcohols up to 10 ng/ml and to provide satisfactory separations of some sugars, such as fructose and myo-inositol and sorbitol and mannitol. This protocol, which does not require special apparatuses, should become a powerful tool in sugar research.
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Affiliation(s)
- Michiko Miyagi
- Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi Shinjukuku, Tokyo 160-8582, Japan
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Wen G, Zhang Y, Zhou Y, Shuang S, Dong C, Choi MMF. Biosensors for Determination of Galactose with Galactose Oxidase Immobilized on Eggshell Membrane. ANAL LETT 2005. [DOI: 10.1081/al-200065786] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kwang-Hyok S, Ui-Nam P, Sarkar C, Bhadra R. A sensitive assay of red blood cell sorbitol level by high performance liquid chromatography: potential for diagnostic evaluation of diabetes. Clin Chim Acta 2005; 354:41-7. [PMID: 15748598 DOI: 10.1016/j.cccn.2004.11.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2004] [Revised: 11/09/2004] [Accepted: 11/09/2004] [Indexed: 11/22/2022]
Abstract
BACKGROUND The level of sorbitol within erythrocyte or other tissue is increased during diabetic complications such as neuropathy, retinopathy, and nephropathy and is thus considered as an indicator for the diagnosis and monitoring the diabetic status. A highly sensitive method of estimation of RBC sorbitol may be very useful in determining the state of diabetes. In this study a high performance liquid chromatography method was developed to analyze RBC sorbitol level. METHOD Benzoylation was used for the precolumn derivatization of RBC polyol prior to analyze by HPLC using C-18 reversed phase column and UV detector. RESULTS The sensitivity was 5 ng/ml using standard sorbitol. The linearity was highly satisfactory up to 2.5 mug/ml which was adequate to measure RBC sorbitol in both diabetic and normal subjects. The values were significantly higher for the diabetic patient compared to normal. Within-run assay CVs were <10% and <14% for between-run. CONCLUSION This method could be useful in estimating RBC sorbitol content for the clinical evaluation of diabetic patients.
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Affiliation(s)
- Son Kwang-Hyok
- Department of Cellular Biochemistry, Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata-700 032, India
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Brahim SI, Maharajh D, Narinesingh D, Guiseppi-Elie A. DESIGN AND CHARACTERIZATION OF A GALACTOSE BIOSENSOR USING A NOVEL POLYPYRROLE-HYDROGEL COMPOSITE MEMBRANE. ANAL LETT 2002. [DOI: 10.1081/al-120004070] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Chapter 2 Reversed-phase and hydrophobic interaction chromatography of carbohydrates and glycoconjugates. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0301-4770(02)80027-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Wang X, Chen Y. Determination of carbohydrates as their p-sulfophenylhydrazones by capillary zone electrophoresis. Carbohydr Res 2001; 332:191-6. [PMID: 11434377 DOI: 10.1016/s0008-6215(01)00090-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
p-Hydrazinobenzenesulfonic acid was explored as an ultraviolet labeling reagent for capillary electrophoresis of mono-, di- and trisaccharides. The labeling reaction that produces p-sulfophenylhydrazines took less than 8 min, and introduced both chromphore and charged groups into the carbohydrate molecules. The derivatives of nine mono- and disaccharides were completely separated in 9 min using a 100 mM borate buffer at pH 10.24. On-column UV detection at 200 nm allowed the detection of glucose with a mass detection limit of 17.6 fmol or a concentration limit of 3.6 microM. Reproducible quantification of carbohydrates was achieved in the concentration range of 0.1-9.1 mM in reaction solution. The method was applied successfully to determine the monosaccharide composition of laminaran.
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Affiliation(s)
- X Wang
- Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China
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Schadewaldt P, Hammen HW, Loganathan K, Bodner-Leidecker A, Wendel U. Analysis of Concentration and 13C Enrichment of d-Galactose in Human Plasma. Clin Chem 2000. [DOI: 10.1093/clinchem/46.5.612] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Background: A stable-isotope dilution method for the sensitive determination of d-galactose in human plasma was established.
Methods: d-[13C]Galactose was added to plasma, and the concentration was measured after d-glucose was removed from the plasma by treatment with d-glucose oxidase and the sample was purified by ion-exchange chromatography. For gas chromatographic–mass spectrometric analysis, aldononitrile pentaacetate derivatives were prepared. Monitoring of the [MH-60]+ ion intensities at m/z 328, 329, and 334 in the positive chemical ionization mode allowed the assessment of 1-12C-, 1-13C-, and U-13C6-labeled d-galactose, respectively. The d-galactose concentration was quantified on the basis of the 13C-labeled internal standard.
Results: The method was linear (range examined, 0.1–5 μmol/L) and of good repeatability in the low and high concentration ranges (within- and between-run CVs <15%). The limit of quantification for plasma d-galactose was <0.02 μmol/L. Measurements in plasma of postabsorptive subjects yielded d-galactose concentrations (mean ± SD) of 0.12 ± 0.03 (n = 16), 0.11 ± 0.04 (n = 15), 1.44 ± 0.54 (n = 10), and 0.17 ± 0.07 (n = 5) μmol/L in healthy adults, diabetic patients, patients with classical galactosemia, and obligate heterozygous parents thereof, respectively. These data were considerably lower (3- to 18-fold) than the values of a conventional enzymatic assay. The procedure was also applied successfully in a stable-isotope turnover study to evaluate endogenous d-galactose formation.
Conclusions: The present findings establish that detection of d-galactose from endogenous sources is feasible in human plasma and show that erroneously high results may be obtained by enzymatic methods.
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Affiliation(s)
- Peter Schadewaldt
- Deutsches Diabetes Forschungsinstitut an der Heinrich-Heine-Universität, Auf’m Hennekamp 65, D-40225 Düsseldorf, Germany
| | - Hans-Werner Hammen
- Deutsches Diabetes Forschungsinstitut an der Heinrich-Heine-Universität, Auf’m Hennekamp 65, D-40225 Düsseldorf, Germany
| | - Kamalanathan Loganathan
- Deutsches Diabetes Forschungsinstitut an der Heinrich-Heine-Universität, Auf’m Hennekamp 65, D-40225 Düsseldorf, Germany
| | - Annette Bodner-Leidecker
- Deutsches Diabetes Forschungsinstitut an der Heinrich-Heine-Universität, Auf’m Hennekamp 65, D-40225 Düsseldorf, Germany
- Kinderklinik, Heinrich-Heine-Universität, Moorenstrasse 5, D-40225 Düsseldorf, Germany
| | - Udo Wendel
- Kinderklinik, Heinrich-Heine-Universität, Moorenstrasse 5, D-40225 Düsseldorf, Germany
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