Magnetic Resonance in Chemistry

Cover image for Vol. 49 Issue S1

Special Issue: Magnetic Resonance in Food: Dealing with Complex Systems

December 2011

Volume 49, Issue Supplement S1

Pages S1–S134

Issue edited by: Peter Belton, Francesco Capozzi

  1. Editorials

    1. Top of page
    2. Editorials
    3. Special Issue Reviews
    4. Special Issue Articles
    5. Special Issue Reviews
    6. Special Issue Articles
    7. Research Articles
    8. Special Issue Articles
    9. Special Issue Reviews
    10. Book Reviews
  2. Special Issue Reviews

    1. Top of page
    2. Editorials
    3. Special Issue Reviews
    4. Special Issue Articles
    5. Special Issue Reviews
    6. Special Issue Articles
    7. Research Articles
    8. Special Issue Articles
    9. Special Issue Reviews
    10. Book Reviews
    1. High resolution NMR characterization of olive oils in terms of quality, authenticity and geographical origin (pages S3–S11)

      Luisa Mannina and Anatoly P. Sobolev

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2856

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      NMR spectroscopy can play a significant role, complementary to other analytical methodologies, to control and verify the quality and authenticity of olive oils. Information on the geographical origin and variety of olive oils can be obtained using NMR spectroscopy coupled with a suitable multivariate statistical analysis. Some examples of the most significant results obtained in the last 10 years of NMR studies on olive oil are reported.

    2. NMR-based metabolomics in wine science (pages S13–S21)

      Young-Shick Hong

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2832

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      NMR is successfully being used to characterize wine and find an association of metabolite with environmental and fermentative factors in grape and wine, through global profiling of metabolite in grape and wine, which is coupled with multivariate statistical analysis, called metabolomics. In particular, NMR serves as one of the major analytical approaches in metabolomics, producing information-rich, highly reliable and reproducible data set.

  3. Special Issue Articles

    1. Top of page
    2. Editorials
    3. Special Issue Reviews
    4. Special Issue Articles
    5. Special Issue Reviews
    6. Special Issue Articles
    7. Research Articles
    8. Special Issue Articles
    9. Special Issue Reviews
    10. Book Reviews
    1. Identification of milk mixtures by 1H NMR profiling (pages S22–S26)

      Raffaele Lamanna, Angela Braca, Elvio Di Paolo and Giovanna Imparato

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2807

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      Nuclear magnetic resonance profiling is used for the identification and quantification of the content of mixtures of different kinds of milk. The relative amount of sheep and cow milk is evaluated, by multilinear regression of a selected set of NMR variables, with a precision of about 10%.

    2. Enhanced NMR-based profiling of polyphenols in commercially available grape juices using solid-phase extraction (pages S27–S36)

      Angela K. Savage, John P. M. van Duynhoven, Gregory Tucker and Clare A. Daykin

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2846

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      The current paper describes the limitations of using NMR spectroscopy to study the phenolic content of grape juices without pre-extraction. A method is described which significantly enhances the accessible information content from NMR-spectroscopy based profiling of grape juice phenols, hence later facilitating identification of these species.

  4. Special Issue Reviews

    1. Top of page
    2. Editorials
    3. Special Issue Reviews
    4. Special Issue Articles
    5. Special Issue Reviews
    6. Special Issue Articles
    7. Research Articles
    8. Special Issue Articles
    9. Special Issue Reviews
    10. Book Reviews
    1. NMR methods for beer characterization and quality control (pages S37–S45)

      J. E. Rodrigues and A. M. Gil

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2844

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      The use of Nuclear Magnetic Resonance (NMR) spectroscopy for beer characterization and quality control is described. Firstly, the qualitative characterization of beer by NMR is reviewed, considering both beer extracts and direct beer analysis. Secondly, NMR studies envisaging the development of rapid methodologies for beer analysis are presented, including Site-Specific Natural Fractionation (SNIF)-NMR and multivariate data analysis (MVDA) of NMR data. Finally, possible future perspectives are briefly discussed.

    2. 1H NMR-based metabonomic applications to decipher gut microbial metabolic influence on mammalian health (pages S47–S54)

      François-Pierre J. Martin, Sebastiano Collino and Serge Rezzi

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2810

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      Scheme describing the symbiotic relationship among the host and their gut bacteria, with the metabolic influence of gut microbiota in a variety of different tissues underpinning the depth of symbiotic control over multiple host cell metabolic regulatory functions.

  5. Special Issue Articles

    1. Top of page
    2. Editorials
    3. Special Issue Reviews
    4. Special Issue Articles
    5. Special Issue Reviews
    6. Special Issue Articles
    7. Research Articles
    8. Special Issue Articles
    9. Special Issue Reviews
    10. Book Reviews
    1. A strategy for fast structural elucidation of metabolites in small volume plant extracts using automated MS-guided LC-MS-SPE-NMR (pages S55–S60)

      Justin J.J. van der Hooft, Velitchka Mihaleva, Ric C.H. de Vos, Raoul J. Bino and Jacques Vervoort

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2833

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      Fast and reliable metabolite identification based on automated MS-guided HPLC-MS-SPE-NMR metabolite extraction combined with an automated 1H NMR spectrum fitting was developed. Positional isomers as structure 1 and 2 were easily distinguished.

    2. NMR comparison of in vitro digestion of Parmigiano Reggiano cheese aged 15 and 30 months (pages S61–S70)

      Alessandra Bordoni, Gianfranco Picone, Elena Babini, Massimiliano Vignali, Francesca Danesi, Veronica Valli, Mattia Di Nunzio, Luca Laghi and Francesco Capozzi

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2847

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      Two different kinds of Parmigiano Reggiano, aged 15 and 30 months, were separately digested using an in vitro system. Samples were collected at different stages of digestion and the process of protein hydrolysis was explored and compared by low-field (LF) and high-resolution (HR) NMR, together with other biochemical methods (Bradford assay and SDS-PAGE).

  6. Research Articles

    1. Top of page
    2. Editorials
    3. Special Issue Reviews
    4. Special Issue Articles
    5. Special Issue Reviews
    6. Special Issue Articles
    7. Research Articles
    8. Special Issue Articles
    9. Special Issue Reviews
    10. Book Reviews
    1. Assessment of meat quality by NMR—an investigation of pork products originating from different breeds (pages S71–S78)

      Ida K. Straadt, Margit D. Aaslyng and Hanne C. Bertram

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2805

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      In the present study time-domain proton NMR relaxometry and high-resolution proton NMR spectroscopy were applied to study the quality of meat obtained from uncommon and novel pig crossings between the rare Iberian and Mangalitza pigs and the more frequent Duroc and Landrace/Yorkshire pigs. Differences in the T2 relaxation pattern and the metabolite profile of the meat between the different crossings were found. In conclusion, the different NMR techniques applied could provide complementary information about biophysical and biochemical factors of importance for meat quality when new pig breeds are introduced.

  7. Special Issue Articles

    1. Top of page
    2. Editorials
    3. Special Issue Reviews
    4. Special Issue Articles
    5. Special Issue Reviews
    6. Special Issue Articles
    7. Research Articles
    8. Special Issue Articles
    9. Special Issue Reviews
    10. Book Reviews
    1. Double pulsed field gradient (double-PFG) MR imaging (MRI) as a means to measure the size of plant cells (pages S79–S84)

      E. Özarslan, M. E. Komlosh, M. J. Lizak, F. Horkay and P. J. Basser

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2797

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      A natural extension of the traditional single-PFG technique comprises multiple pairs of diffusion gradients making it possible to characterize anisotropy at different length scales without the need to employ very strong gradients. Experiments on controlled glass capillary arrays yielded quantitatively accurate image contrast dependent on the pore size. By incorporating the fiber orientation information from diffusion tensor imaging (DTI) into the double-PFG framework, the cell size in the vascular bundles of the celery stalk was measured noninvasively.

    2. Structure and organization within films of arabinoxylans extracted from wheat flour as revealed by various NMR spectroscopic methods (pages S85–S92)

      Corinne Rondeau-Mouro, Ruifeng Ying, Julien Ruellet and Luc Saulnier

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2852

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      Arabinoxylans (AXs) extracted from wheat flour were characterized by using three different techniques of NMR spectroscopy. Three pure AX fractions exhibiting an arabinose to xylose ratio of 0.33, 0.53, and 0.73 were compared relative to their substitution feature and also to their assembly into thin films. Comparison of the different AX films containing various water contents pointed out stronger dipolar interactions for lowly substituted AX in relation with a more compact structure with small nanopores.

  8. Special Issue Reviews

    1. Top of page
    2. Editorials
    3. Special Issue Reviews
    4. Special Issue Articles
    5. Special Issue Reviews
    6. Special Issue Articles
    7. Research Articles
    8. Special Issue Articles
    9. Special Issue Reviews
    10. Book Reviews
    1. NMR on emulsions: characterisation of liquid dispersed systems (pages S93–S104)

      R. Bernewitz, G. Guthausen and H. P. Schuchmann

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2825

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      Low- and high-field NMR methods and data analysis tools are presented and discussed for the determination of droplet size distributions of emulsions. Not only single emulsions with mono- and bi-modal distributions, but also the more complex double emulsions can be characterised. Size distributions of inner droplets of double emulsions, obtained by low- and high-field NMR are compared with results of statistical analysis of CLSM images.

    2. Application of ESR spin label oximetry in food science (pages S105–S112)

      Yu-Ting Zhou, Jun-Jie Yin and Y. Martin Lo

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2822

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      Spin label oximetry, an electron spin resonance (ESR) methodology based on the bimolecular collision between oxygen and a spin label, is capable of detecting dissolved oxygen concentration. The line width in an ESR spectrum for the spin label is dependent on the increase/decrease in oxygen concentration, enabling qualitative and quantitative analysis of continuing oxygen generation or consumption. Therefore, ESR spectroscopy could be readily adaptable for applications in food and biological systems.

    3. Rapid analyses of oil and fat content in agri-food products using continuous wave free precession time domain NMR (pages S113–S120)

      L. A. Colnago, R. B. V. Azeredo, A. Marchi Netto, F. D. Andrade and T. Venâncio

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2841

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      The application of continuous wave free precession (CWFP) in rapid analyses of oil and fat content in agri-food by TD-NMR is reviewed. The technique improves the sensitivity approximately one order of magnitude compared with the FID acquired in quantitative conditions. In addition, interesting applications like rapid method for relaxation times measurements and true online analysis are also highlighted.

    4. The HRMAS–NMR tool in foodstuff characterisation (pages S121–S125)

      Massimiliano Valentini, Mena Ritota, Caterina Cafiero, Sara Cozzolino, Liviana Leita and Paolo Sequi

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2826

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      High resolution magic angle spinning is a powerful tool in food science. It is based on magnetic resonance spectroscopy and can be used efficiently in assessing the metabolic profile of, in principle, any foodstuff, and determining the macromolecular aggregation. The approach is demonstrated to be quick, reliable opening up several possibilities in food characterization.

    5. NMR studies of hydration in low water content biopolymer systems (pages S127–S132)

      Peter S. Belton

      Article first published online: 31 JAN 2012 | DOI: 10.1002/mrc.2848

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      The problem of characterising the behaviour of water and biopolymers by NMR in low water content biopolymer systems is discussed. It is suggested that any successful model must take account of at least three separate pools of water including water vapour. In spite of the formidable experimental and theoretical difficulties 17O NMR may be the best way of elucidating the relevant interactions involved.

  9. Book Reviews

    1. Top of page
    2. Editorials
    3. Special Issue Reviews
    4. Special Issue Articles
    5. Special Issue Reviews
    6. Special Issue Articles
    7. Research Articles
    8. Special Issue Articles
    9. Special Issue Reviews
    10. Book Reviews

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