Evaluation of a Kiwifruit Non-Destructive Firmness Sensory
Non-destructive firmness sensors have recently become available for packers and fruit handlers although they demand more information on their performance and reliability. A commercial sensor based on low mass impact has been tested on kiwifruit. Correlation between the firmness index given by the device and Magness-Taylor force was low (r2 = 0.594). Classifications modeled with discriminant analysis showed that it is feasible to sort samples into two firmness groups (96 to 91%), but classification into three classes yields lower scores.