ISHS Acta Horticulturae 599: International Conference: Postharvest Unlimited
PREDICTION OF POSTHARVEST MATURITY AND SIZE OF VICTORIA PLUMS BY VIBRATION RESPONSE |
| Authors: | G.B. Bengtsson, F. Lundby, J-E. Haugen, B. Egelandsdal, J.A. Marheim |
| Keywords: | Prunus domestica, multivariate statistics, firmness, storage time, laser vibrometer |
| Abstract:
Rapid and non-destructive measurement of fruit firmness would be of great help in quality assessment and sorting, and in shelf-life prediction of fruit. Using multivariate statistical methods the potential of measuring the vibration response with a laser vibrometer was explored in plums. Phase shifts at statistically selected frequencies were highly correlated to postharvest storage time (r=0.92), plum weight (r=0.99), plum length (r=0.97) and plum width (r=0.96). The prediction errors were 0.92 days, 0.76 g, 0.67 mm, 0.69 mm, respectively. This study on a limited number of fruits demonstrates the power of multivariate statistical procedures to extract information from vibration spectra. | |
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