Abstract
ABSTRACT Methods are needed to better predict post-harvest peach bruise resistance. The effects of ripeness, drop height, and fruit drop orientation on firmness, bruise volume, and various impact parameters were determined for peaches. Parameters for impact on a flat hard surface were identified which were correlated with recognized measures of bruise resistance. Most of the impact parameters changed with ripeness. Skewness of the force versus impact curve was related to fruit ripeness and independent of fruit mass and drop height. At constant drop height, ripeness was related to F/T, percent absorbed energy, and skewness. Ripeness and drop height were highly correlated with the percentage of fruit bruised and bruise volume.
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