Fruit and vegetables election results methods and fruit and vegetables election results devices

摘要

PROBLEM TO BE SOLVED: To estimate the date of minimum durability by one measurement by measuring the elastic modulua of fruits and vegetables at the time of sorting them, and predicting the shelf lives of the vegetables and fruits from the measured elastic modulus and the elastic modulus of eatable fruits and vegetables through the use of the expression of temporal change of the elastic modulus. ;SOLUTION: At the time of sorting kiwi fruits, the weight (m) of the kiwi fruits and the secondary resonance peak frequency (f) of the kiwi fruits in a frequency response curve are measured and substituted in Em=f2 m2/3 to obtain the elastic modulus Em of the kiwi fruits at the time of sorting. An elastic modulus is reduced with time in the order of before the shelf life, within the shelf life, and after the shelf life. The elastic modulus Er at the time of the start of a shelf life, and the elastic modulus Eo at the time of the date of minimum durability are previously obtained, and the elastic modulus Em at the time of sorting is compared with Er and Eo. In the case of ErEm, it is estimated that the kiwi fruits are immature. In the case of Eo≤Em≤Er, it is estimated that the kiwi fruits are within a shelf life. In the case of EmEo, it is estimated that the shelf life of the kiwi fruits is expired.;COPYRIGHT: (C)2001,JPO