Salt distribution in dry-cured ham measured by computed tomography and image analysis

Christian Sylvest Vestergaard, Søren G. Erbou, T. Thauland, P. Berg, Jens Adler-Nissen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Forty-seven hams were scanned four times by computed tomography (CT) while being manufactured into dry-cured hams. An image-processing algorithm measured CT values in the lean part of the hams and provided line profiles reflecting the magnitude and spatial location of salt gradients. At the end of manufacturing, seven entire hams were dissected and the salt content of the lean part determined. Likewise, in the remaining 40 hams, the lean meat of the slices corresponding to the CT images was dissected, analyzed chemically for NaCl and compared to the CT value. The salt content of entire dry-cured hams correlated well (r2=0.94) to the CT value of a 10 mm section located at the center of femur bone, perpendicular to the length axis of the hams. In the same position, significant correlations between the CT values before (r2=0.71) and after (r2=0.80) the ageing period and actual chemical analysis of the same section were demonstrated. Line profiles illustrating the combined salt tribution and dehydration within a ham related to the physical characteristics of the ham as well as to the manufacturing process. These findings reveal that the effects of altered manufacturing practices can be followed non-invasively, while hams are still in production. Computed tomography combined with appropriate image analysis offers advantages as a non-invasive tool in both research and product development.
    Original languageEnglish
    JournalMeat Science
    Volume69
    Issue number1
    Pages (from-to)9-15
    ISSN0309-1740
    Publication statusPublished - 2005

    Cite this

    Vestergaard, C. S., Erbou, S. G., Thauland, T., Berg, P., & Adler-Nissen, J. (2005). Salt distribution in dry-cured ham measured by computed tomography and image analysis. Meat Science, 69(1), 9-15.
    Vestergaard, Christian Sylvest ; Erbou, Søren G. ; Thauland, T. ; Berg, P. ; Adler-Nissen, Jens. / Salt distribution in dry-cured ham measured by computed tomography and image analysis. In: Meat Science. 2005 ; Vol. 69, No. 1. pp. 9-15.
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    title = "Salt distribution in dry-cured ham measured by computed tomography and image analysis",
    abstract = "Forty-seven hams were scanned four times by computed tomography (CT) while being manufactured into dry-cured hams. An image-processing algorithm measured CT values in the lean part of the hams and provided line profiles reflecting the magnitude and spatial location of salt gradients. At the end of manufacturing, seven entire hams were dissected and the salt content of the lean part determined. Likewise, in the remaining 40 hams, the lean meat of the slices corresponding to the CT images was dissected, analyzed chemically for NaCl and compared to the CT value. The salt content of entire dry-cured hams correlated well (r2=0.94) to the CT value of a 10 mm section located at the center of femur bone, perpendicular to the length axis of the hams. In the same position, significant correlations between the CT values before (r2=0.71) and after (r2=0.80) the ageing period and actual chemical analysis of the same section were demonstrated. Line profiles illustrating the combined salt tribution and dehydration within a ham related to the physical characteristics of the ham as well as to the manufacturing process. These findings reveal that the effects of altered manufacturing practices can be followed non-invasively, while hams are still in production. Computed tomography combined with appropriate image analysis offers advantages as a non-invasive tool in both research and product development.",
    author = "Vestergaard, {Christian Sylvest} and Erbou, {S{\o}ren G.} and T. Thauland and P. Berg and Jens Adler-Nissen",
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    Vestergaard, CS, Erbou, SG, Thauland, T, Berg, P & Adler-Nissen, J 2005, 'Salt distribution in dry-cured ham measured by computed tomography and image analysis', Meat Science, vol. 69, no. 1, pp. 9-15.

    Salt distribution in dry-cured ham measured by computed tomography and image analysis. / Vestergaard, Christian Sylvest; Erbou, Søren G.; Thauland, T.; Berg, P.; Adler-Nissen, Jens.

    In: Meat Science, Vol. 69, No. 1, 2005, p. 9-15.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - Salt distribution in dry-cured ham measured by computed tomography and image analysis

    AU - Vestergaard, Christian Sylvest

    AU - Erbou, Søren G.

    AU - Thauland, T.

    AU - Berg, P.

    AU - Adler-Nissen, Jens

    PY - 2005

    Y1 - 2005

    N2 - Forty-seven hams were scanned four times by computed tomography (CT) while being manufactured into dry-cured hams. An image-processing algorithm measured CT values in the lean part of the hams and provided line profiles reflecting the magnitude and spatial location of salt gradients. At the end of manufacturing, seven entire hams were dissected and the salt content of the lean part determined. Likewise, in the remaining 40 hams, the lean meat of the slices corresponding to the CT images was dissected, analyzed chemically for NaCl and compared to the CT value. The salt content of entire dry-cured hams correlated well (r2=0.94) to the CT value of a 10 mm section located at the center of femur bone, perpendicular to the length axis of the hams. In the same position, significant correlations between the CT values before (r2=0.71) and after (r2=0.80) the ageing period and actual chemical analysis of the same section were demonstrated. Line profiles illustrating the combined salt tribution and dehydration within a ham related to the physical characteristics of the ham as well as to the manufacturing process. These findings reveal that the effects of altered manufacturing practices can be followed non-invasively, while hams are still in production. Computed tomography combined with appropriate image analysis offers advantages as a non-invasive tool in both research and product development.

    AB - Forty-seven hams were scanned four times by computed tomography (CT) while being manufactured into dry-cured hams. An image-processing algorithm measured CT values in the lean part of the hams and provided line profiles reflecting the magnitude and spatial location of salt gradients. At the end of manufacturing, seven entire hams were dissected and the salt content of the lean part determined. Likewise, in the remaining 40 hams, the lean meat of the slices corresponding to the CT images was dissected, analyzed chemically for NaCl and compared to the CT value. The salt content of entire dry-cured hams correlated well (r2=0.94) to the CT value of a 10 mm section located at the center of femur bone, perpendicular to the length axis of the hams. In the same position, significant correlations between the CT values before (r2=0.71) and after (r2=0.80) the ageing period and actual chemical analysis of the same section were demonstrated. Line profiles illustrating the combined salt tribution and dehydration within a ham related to the physical characteristics of the ham as well as to the manufacturing process. These findings reveal that the effects of altered manufacturing practices can be followed non-invasively, while hams are still in production. Computed tomography combined with appropriate image analysis offers advantages as a non-invasive tool in both research and product development.

    M3 - Journal article

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