Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    The non-contact, in-depth profiling in fresh tomatoes
    Bicanic, D.D. ; Hooft, J. van der; Gibkes, J. ; Chirtoc, M. ; Buijnsters, I. - \ 2007
    New perspectives in detection of lycopene in tomato based foods
    Bicanic, D.D. ; Doka, O. ; Gibkes, J. ; Rooij, H. van; Luterotti, S. ; Hommelen, R. ; Veeken, P.L.R. van der - \ 2005
    In: Proceedings of 2nd central european meeting of food technologists, biotechnologists and nutricionists, 2nd central european meeting of food technologists, biotechnologists and nutricionists, Zagreb 2005. - Zagreb : Food Technologists, Biotechnologists and Nutricionists Soc. - ISBN 9789539972514 - p. 106 - 111.
    Rapid, accurate and direct determination of total lycopene content in tomato paste
    Bicanic, D.D. ; Anese, M. ; Luterotti, S. ; Dadarlat, D. ; Gibkes, J. ; Lubbers, M.T.M.H. - \ 2003
    Review of Scientific Instruments 74 (2003). - ISSN 0034-6748 - p. 687 - 689.
    Lycopene that imparts red color to the tomato fruit is the most potent antioxidant among carotenes, an important nutrient and also used as a color ingredient in many food formulations. Since cooked and processed foods derived from tomatoes were shown to provide optimal lycopene boost, products such as paste, puree, juice, etc. are nowadays gaining popularity as dietary sources. The analysis of lycopene in tomato paste (partially dehydrated product prepared by vacuum concentrating tomato juice) is carried out using either high pressure liquid chromatography (HPLC), spectrophotometry, or by evaluating the color. The instability of lycopene during processes of extraction, etc., handling, and disposal of organic solvents makes the preparation of a sample for the analysis a delicate task. Despite a recognized need for accurate and rapid assessment of lycopene in tomato products no such method is available at present. The study described here focuses on a direct determination of a total lycopene content in different tomato pastes by means of the laser optothermal window (LOW) method at 502 nm. The concentration of lycopene in tomato paste ranged between 25 and 150 mg per 100 g product; the results are in excellent agreement with those obtained by spectrophotometry. The time needed to complete LOW analysis is very short, so that decomposition of pigment and the formation of artifacts are minimized. Preliminary results indicate a good degree of reproducibility making the LOW method suitable for routine assays of lycopene content in tomato paste. (C) 2003 American Institute of Physics.
    Controlled conditions : a future for TLC
    Vovk, I. ; Prosek, M. ; Gibkes, J. ; Kranko, M. ; Bicanic, D. - \ 2001
    In: Proceedings of the international symposium on planar separations : Planar Chromatography 2001 , Lillafored, Hungary / S. Nyredi. - Budakalasz, Hungary : [s.n.], 2001 - p. 155 - 161.
    Assessing the extent of oxidation in the thermally stressed safflower oil. Part II: Two variants of photopyroelectric method, differential scanning calorimetry and gas chromatography
    Bicanic, D. ; Doka, O. ; Kantor, Z. ; Nagy, G. ; Cozijnsen, J. ; Mercuri, F. ; Gibkes, J. - \ 2001
    Analytical Sciences 17 (2001). - ISSN 0910-6340 - p. S551 - S554.
    Comparative study of coating thickness determination in packaging composite materials using photothermal radiometry, photoacoustic and photopyroelectric methods
    Chirtoc, M. ; Gibkes, J. ; Walther, H.G. ; Christ, A. ; Antoniow, J.S. ; Bicanic, D. ; Bozoki, Z. - \ 2001
    Analytical Sciences 17 (2001). - ISSN 0910-6340 - p. S185 - S188.
    Measurement of Coating Thickness Determination of Packaging Composite Materials by Means of Photothermal Radiometry, Photoacoustic and Photothermal Methods
    Chirtoc, M. ; Gibkes, J. ; Walther, H.G. ; Antoniow, J.S. ; Bicanic, D. ; Bozoki, Z. ; Szabo, G. ; Bein, B. ; Pelzl, J. ; Kleebauer, M. ; Bader, H. - \ 2000
    In: Book of Abstracts, 11th Topical International Meeting on PA and PT Phenomena, Kyoto, Japan, June 25-29, 2000. - Kyoto, Japan : Kyoto University Press, 2000 - p. 1 - 1.
    Moisture Take-up From Humid Atmosphere Analysed by Infrared Radiometry
    Bein, B. ; Gibkes, J. ; Delgadiullo-Holtfort, I. ; Bicanic, D. ; Pelzl, J. - \ 2000
    In: Proceedings of Quantitative Infrared Thermography QIRT 2000, Reims, France, July 17-21, 2000. - Reims, France : University of Reims, 2000 - p. 1 - 1.
    Detection of Changes Induced in Margarine Exposed to Air and to Low Level UV Radiation: An Intercomparison Study
    Gibkes, J. ; Bicanic, D. ; Cozijnsen, J. ; Frankhuizen, R. ; Koehorst, R. ; Doka, O. ; Jalink, H. - \ 1999
    In: Photoacoustic and Photothermal Phenomena : Proceedings of the 10th Topical International Conference on Photoacoustic and Photothermal Phenomena, AIP Conference Proceedings 463, Rome, Italy, August 24-26, 1998 /Scudieri F. and BertolottiM.(eds.). -Woodburry, New York, US ; American Institute of Physics Press, 1999. - ISBN 1-56396-805-3 - p. 670 - 672.
    Some Laser Based Photothermal Methods and Their Applications for Optical and Thermal Characterisation of Lipids
    Bicanic, D. ; Franko, M. ; Mocnik, G. ; Dadarlat, D. ; Sikovec, M. ; Niederlander, H. ; Bovenkamp, P. van der; Lutteroti, S. ; Gibkes, J. ; Klift, E. van der; Bogoni, P. ; Cerni, L. ; Procedda, G. - \ 1999
    In: Proceedings of 23rd World Congress of the International Society for Fat Research (ISF), October 3-7, 1999, Brighton, England. - Champaign, Illinois, USA : American Oil Chemical Society (AOCS) Press, 1999. - ISBN 1-893997-08-1 - p. 77 - 78.
    Photoacoustic study of in-depth distribution of compounds on TLC plates affected by secondary chromatography.
    Vovk, I. ; Franko, M. ; Gibkes, J. ; Prosek, M. ; Bicanic, D. - \ 1998
    In: Proceedings of OJI International Seminar on Photothermal Phenomena and Their Applications, Sapporo, Japan - p. 255 - 258.
    Photoacoustic study of the in-depth distribution of compounds on TLC plates affected by drying conditions.
    Vovk, I. ; Franko, M. ; Gibkes, J. ; Prosek, M. ; Bicanic, D. - \ 1998
    In: 10th International Conference on Photoacoustic and Photothermal Phenomena, Rome, Italy - p. 549 - 549.
    Photoacoustic study of changes in margarine exposed to air and UV radiation.
    Gibkes, J. ; Bicanic, D. - \ 1998
    In: 10th International Conference on Photoacoustic and Photothermal Phenomena, Rome, Italy - p. 537 - 538.
    Thermal diffusivity of a hard boiled candy obtained by photothermal beam deflection and standard photopyroelectric method.
    Favier, J.P. ; Dadarlat, D. ; Gibkes, J. ; Berg, C. van den; Bicanic, D. - \ 1998
    Instrumentation Science and Technology 26 (1998). - ISSN 1073-9149 - p. 113 - 124.
    The effect of drying conditions on the in-depth distribution of compounds on thin layer chromatographic plates: the PA assay.
    Vovk, I. ; Franko, M. ; Gibkes, J. ; Prosek, M. ; Bicanic, D. - \ 1998
    Journal of Planar Chromatography 11 (1998). - p. 379 - 382.
    Photopyroelectric observation of melting in valeric (C5:O), linoleic (C18:2), linolenic (C18:3) and tricosanoic (C23:0) free fatty acids.
    Dadarlat, D. ; Bicanic, D. ; Gibkes, J. ; Surducan, V. ; Pasca, A. - \ 1998
    Journal of the Science of Food and Agriculture 78 (1998). - ISSN 0022-5142 - p. 182 - 186.
    Depth Profiling of TLC Plates by Photoacoustic Spectroscopy.
    Vovk, I. ; Franko, M. ; Gibkes, J. ; Prosek, M. ; Bicanic, D. - \ 1997
    Journal of Planar Chromatography 10 (1997). - p. 258 - 262.
    Photoacoustic Investigations of Secondary Chromatographic Effects on TLC Plates.
    Vovk, I. ; Franko, M. ; Gibkes, J. ; Prosek, M. ; Bicanic, D. - \ 1997
    Analytical Sciences 13 (1997). - ISSN 0910-6340 - p. 191 - 194.
    Depth Profiling of TLC Plates by Photoacoustic Spectroscopy.
    Vovk, I. ; Franko, M. ; Gibkes, J. ; Prosek, M. ; Bicanic, D. - \ 1997
    In: Proceedings of the 9th International Symposium on Instrumental Planar Chromatography, Nyiredy Sz., Kaiser R.E., Studer A. (eds.), Research Institute for Medicinal Plants and Springer Hungarica, Budakalasz - p. 353 - 363.
    Photoacoustic Investigations of Effect of Drying Process on the In-Depth Distribution of Compounds on TLC Plates.
    Vovk, I. ; Franko, M. ; Gibkes, J. ; Prosek, M. ; Bicanic, D. - \ 1997
    In: Book of Abstracts, Balaton Symposium 97 on High Performance Separation Methods, Si_fok, Hungary - p. 271 - 271.
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