Henk van As

Summary

Affiliation: Wageningen University
Country: The Netherlands

Publications

  1. ncbi request reprint Water and glucose gradients in the substrate measured with NMR imaging during solid-state fermentation with Aspergillus oryzae
    Frank Jan Nagel
    Wageningen University, Department of Agrotechnology and Food Sciences, Food and Bioprocess Engineering Group, P O Box 8129, 6700 EV Wageningen, The Netherlands
    Biotechnol Bioeng 79:653-63. 2002
  2. pmc Most water in the tomato truss is imported through the xylem, not the phloem: a nuclear magnetic resonance flow imaging study
    Carel W Windt
    Laboratory of Biophysics, Wageningen University, 6703 HA Wageningen, The Netherlands
    Plant Physiol 151:830-42. 2009
  3. pmc Quantitative permeability imaging of plant tissues
    Timur A Sibgatullin
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, 6703 HA Wageningen, The Netherlands
    Eur Biophys J 39:699-710. 2010
  4. doi request reprint MRI of plants and foods
    Henk van As
    Laboratory of Biophysics, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, Netherlands
    J Magn Reson 229:25-34. 2013
  5. pmc Intact plant magnetic resonance imaging to study dynamics in long-distance sap flow and flow-conducting surface area
    T W J Scheenen
    Laboratory of Biophysics and Wageningen Nuclear Magnetic Resonance Centre, Department of Agrotechnology and Food Sciences, Wageningen University, 6703 HA Wageningen, The Netherlands
    Plant Physiol 144:1157-65. 2007
  6. pmc MRI of intact plants
    Henk van As
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, Dreijenlaan 3, 6703 HA, Wageningen, The Netherlands
    Photosynth Res 102:213-22. 2009
  7. ncbi request reprint Intact plant MRI for the study of cell water relations, membrane permeability, cell-to-cell and long distance water transport
    Henk van As
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
    J Exp Bot 58:743-56. 2007
  8. ncbi request reprint Anomalies in moisture transport during broccoli drying monitored by MRI?
    Xin Jin
    Systems and Control Group, Wageningen University, P O Box 17, 6700AA Wageningen, The Netherlands
    Faraday Discuss 158:65-75; discussion 105-24. 2012
  9. doi request reprint Controlled mixing of lanthanide(III) ions in coacervate core micelles
    Junyou Wang
    Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
    Chem Commun (Camb) 49:3736-8. 2013
  10. ncbi request reprint Magnetic resonance imaging of single rice kernels during cooking
    Ales Mohoric
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
    J Magn Reson 171:157-62. 2004

Collaborators

Detail Information

Publications22

  1. ncbi request reprint Water and glucose gradients in the substrate measured with NMR imaging during solid-state fermentation with Aspergillus oryzae
    Frank Jan Nagel
    Wageningen University, Department of Agrotechnology and Food Sciences, Food and Bioprocess Engineering Group, P O Box 8129, 6700 EV Wageningen, The Netherlands
    Biotechnol Bioeng 79:653-63. 2002
    ....
  2. pmc Most water in the tomato truss is imported through the xylem, not the phloem: a nuclear magnetic resonance flow imaging study
    Carel W Windt
    Laboratory of Biophysics, Wageningen University, 6703 HA Wageningen, The Netherlands
    Plant Physiol 151:830-42. 2009
    ..This indicates that neither of them was involved in generating or conducting the circulation of sap. Only when the main axis of the peduncle was cut back did the circulation stop...
  3. pmc Quantitative permeability imaging of plant tissues
    Timur A Sibgatullin
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, 6703 HA Wageningen, The Netherlands
    Eur Biophys J 39:699-710. 2010
    ..The method is demonstrated by characterizing anisotropic cell dimensions and permeability on a subpixel level of different tissues of a carrot (Daucus carota) taproot in the radial and axial directions...
  4. doi request reprint MRI of plants and foods
    Henk van As
    Laboratory of Biophysics, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, Netherlands
    J Magn Reson 229:25-34. 2013
    ..For both application areas we witness a development where MRI is moving from highly specialised equipment to mobile and downscaled versions to be used by a broad user base in the field, greenhouse, food laboratory or factory...
  5. pmc Intact plant magnetic resonance imaging to study dynamics in long-distance sap flow and flow-conducting surface area
    T W J Scheenen
    Laboratory of Biophysics and Wageningen Nuclear Magnetic Resonance Centre, Department of Agrotechnology and Food Sciences, Wageningen University, 6703 HA Wageningen, The Netherlands
    Plant Physiol 144:1157-65. 2007
    ..The amount of data and detail that are presented for this single plant demonstrates new possibilities for using MRI in studying the dynamics of long-distance transport in plants...
  6. pmc MRI of intact plants
    Henk van As
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, Dreijenlaan 3, 6703 HA, Wageningen, The Netherlands
    Photosynth Res 102:213-22. 2009
    ....
  7. ncbi request reprint Intact plant MRI for the study of cell water relations, membrane permeability, cell-to-cell and long distance water transport
    Henk van As
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
    J Exp Bot 58:743-56. 2007
    ..An overview of NMR and MRI methods to measure such information is presented and hardware solutions for minimal invasive intact plant MRI are discussed...
  8. ncbi request reprint Anomalies in moisture transport during broccoli drying monitored by MRI?
    Xin Jin
    Systems and Control Group, Wageningen University, P O Box 17, 6700AA Wageningen, The Netherlands
    Faraday Discuss 158:65-75; discussion 105-24. 2012
    ..Pre-treatments that change skin and bulk elastic properties of broccoli show that our hypothesis of stress-diffusion is plausible...
  9. doi request reprint Controlled mixing of lanthanide(III) ions in coacervate core micelles
    Junyou Wang
    Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
    Chem Commun (Camb) 49:3736-8. 2013
    ..Consequently, the formed micelles show a high tunability between luminescence and relaxivity. These highly stable micelles present great potential for new materials, e.g. as bimodal imaging probes...
  10. ncbi request reprint Magnetic resonance imaging of single rice kernels during cooking
    Ales Mohoric
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
    J Magn Reson 171:157-62. 2004
    ..This allows using these real-time MRI data for developing and validating models that describe the effect of kernel microstructure on its cooking behavior...
  11. ncbi request reprint Modelling of self-diffusion and relaxation time NMR in multicompartment systems with cylindrical geometry
    Louise van der Weerd
    Laboratory of Biophysics, Wageningen University, Wageningen, The Netherlands
    J Magn Reson 156:213-21. 2002
    ..In addition, the consequences of analysis by multiexponential curve fitting are investigated...
  12. ncbi request reprint MRI of long-distance water transport: a comparison of the phloem and xylem flow characteristics and dynamics in poplar, castor bean, tomato and tobacco
    Carel W Windt
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
    Plant Cell Environ 29:1715-29. 2006
    ....
  13. pmc Diffusional properties of methanogenic granular sludge: 1H NMR characterization
    Piet N L Lens
    Laboratory of Biophysics, University of Wageningen, 6700 EV Wageningen, The Netherlands
    Appl Environ Microbiol 69:6644-9. 2003
    ....
  14. doi request reprint Magnetic resonance microscopy of iron transport in methanogenic granules
    Jan Bartacek
    Sub Department of Environmental Technology, Wageningen University, Wageningen, The Netherlands
    J Magn Reson 200:303-12. 2009
    ....
  15. pmc Membrane chemical stability and seed longevity
    Elena A Golovina
    Laboratory of Plant Physiology, Wageningen University, 6703 BD Wageningen, The Netherlands
    Eur Biophys J 39:657-68. 2010
    ..Comparison of model and in vivo data shows that the differences in longevity between onion and tomato seeds are caused by differences in the chemical status of the membrane surface rather than the degree of its immobilization...
  16. doi request reprint Effect of pH on complex coacervate core micelles from Fe(III)-based coordination polymer
    Junyou Wang
    Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
    Langmuir 27:14776-82. 2011
    ..We attribute this to the formation of mixed iron complexes in the core, involving both the bis-ligand and hydroxide ions. These complexes are stabilized toward precipitation by the diblock copolymer...
  17. pmc Functional imaging of plants: a nuclear magnetic resonance study of a cucumber plant
    Tom Scheenen
    Laboratory of Biophysics, Department of Agrotechnology and Food Sciences, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
    Biophys J 82:481-92. 2002
    ..This could point to an increased water permeability of the tonoplast membrane of the observed cells in this period of quick recovery from severe water loss...
  18. ncbi request reprint Correlated displacement-T2 MRI by means of a Pulsed Field Gradient-Multi Spin Echo Method
    Carel W Windt
    Laboratory of Biophysics and Wageningen NMR Centre, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
    J Magn Reson 185:230-9. 2007
    ..g., plants, porous media, bioreactors, biomats)...
  19. doi request reprint Phase behavior of phosphatidylglycerol in spinach thylakoid membranes as revealed by 31P-NMR
    Sashka B Krumova
    Wageningen University, Laboratory of Biophysics, PO Box 8128, 6700 ET Wageningen, The Netherlands
    Biochim Biophys Acta 1778:997-1003. 2008
    ..Thus, our data show that the location of the phospholipids is not restricted to the bilayer phase and that the lamellar phase co-exists with a non-bilayer isotropic phase...
  20. ncbi request reprint Effects of cold-girdling on flows in the transport phloem in Ricinus communis: is mass flow inhibited?
    Andreas D Peuke
    University of Freiburg, Chair of Tree Physiology, Georges Köhler Allee 53, D 79110 Freiburg i Br, Germany
    Plant Cell Environ 29:15-25. 2006
    ..Possible further mechanisms for reversible inhibition of water flow are discussed...
  21. pmc Aquaporins of the PIP2 class are required for efficient anther dehiscence in tobacco
    Marc Bots
    Department of Experimental Botany, Graduate School of Experimental Plant Sciences, Radboud University, 6525 ED Nijmegen, The Netherlands
    Plant Physiol 137:1049-56. 2005
    ..Together, our results suggest that aquaporins of the PIP2 class are required for efficient anther dehydration prior to dehiscence...
  22. ncbi request reprint Solid-state 27Al MRI and NMR thermometry for catalytic applications with conventional (liquids) MRI instrumentation and techniques
    Igor V Koptyug
    International Tomography Center, 3A Institutskaya St, Novosibirsk 630090, Russia
    J Magn Reson 175:21-9. 2005
    ....