Effect of Simulate Transportation Vibration on the Storage Quality of Lycium barbarum Fruit

The effect of transport vibration on storage quality of Lycium barbarum fruit was studied, which provided theoretical guidance for the reduction of postharvest Lycium barbarum fruit logistics and transportation damage. In the experiment, ‘Ningqi No. 7’ Lycium barbarum was selected as the test material, and the corrugated box was fixed on the vibration platform by the method of simulated transportation. Vibration treatments for 0 (control), 4, 8, 12 and 16 h were performed at a vibration frequency of 3 Hz. The treated Lycium barbarum was stored in a fresh-keeping refrigerator at 4±1 ℃ and 93%±3% RH for 20 d, detected the hardness, color, superoxide anion free radical content and activities of catalase, peroxidase and superoxide dismutase during different storage periods. The results showed that mechanical vibration accelerated the decrease of hardness and color value content, superoxide anion, catalase, peroxidase and superoxide dismutase were significantly increased (P<0.05). Among them 16 h vibration treatment had a great influence on the quality changes of Lycium barbarum fruit during storage. The impact of mechanical vibration on the quality of Lycium barbarum gradually accumulated, the longer the vibration time, the greater the damage to the quality, which accelerated nutrients degradation and quality deterioration rates of Lycium barbarum fruit. Therefore, it is important to avoid vibration or shorten the vibration time during transportation.