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| International Agrophysics |
| publisher: | Institute of Agrophysics
Polish Academy of Sciences
Lublin, Poland |
| ISSN: |
0236-8722 |
vol. 12, nr. 2 (1998)
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Prediction of apple bruising based on the instantaneous impact shear stress and energy absorbed
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Yuwana Y.1, Duprat F.2
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1 Faculty of Agriculture, Bengkulu University, Jin. Raya Kandang Limun, Bengkulu, Indonesia |
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2 INRA, Laboratoire de Methodes Physiques d'Etude, Site Agroparc, Domaine Saint Paul, F 84914 Avignon Cedex 9, France |
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vol. 12 (1998), nr. 2,
pp. 133-140
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abstract
Instantaneous impact shear stress together with the instantaneous energy absorbed were used to predict bruise volume in Golden Delicious apple. The prediction produced a linear relation between the predicted bruise volumes and the measured bruise volumes with a factor of proportionality (K) 1.08 and a coefficient of correlation (R) 0.949. Both the instantaneous impact shear stress and energy absorbed decreased during storage of the fruit, but the value of K was relatively constant. The value of K was also relatively constant for the impact with small drop heights, but it slightly increased with the variation of fruit mass.
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keywords
apple, instantaneous impact shear stress, instantaneous energy absorbed, predicted bruise volume, measured bruise volume
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