Abstract: Based on the actual situation during storage and transportation, the effects of temperature fluctuations, and mechanical vibration frequency and acceleration rate on the storage quality of Kyoho grape were investigated. The experimental temperature conditions (?1, ?1 to 1, ?1 to 2, ?1 to 3 and ?1 to 5 ℃) and mechanical vibration conditions (three vibration acceleration rates of 2.5, 5.0 and 7.5 m/s2 and five vibration frequencies of 10, 20, 30, 40 and 50 Hz) were designed. The effects of temperature fluctuations and mechanical vibration conditions on hardness and titratable acid content, threshing percentage, decay incidence, and vitamin C content in grapes from each group were analyzed. The experimental results showed that temperature fluctuation had the largest effects on vitamin C content and hardness. Vibration frequency was not directly proportional to the rate of grape deterioration. At 20 Hz, however, the rate of quality deterioration was slowest during actual storage and transportation process. The greater vibration acceleration rate could result in more severe damage to grape quality during the early period of storage, and the effect of vibration acceleration rate on threshing percentage and hardness was greatest.

Key words: storage and transportation, grape, temperature, vibration condition