以上海南汇"湖景蜜露"水蜜桃为试材,在(3±1)℃贮藏条件下,研究了水蜜桃病原菌的种类和麝香草酚(thymol)处理对病原菌菌丝生长以及thymol+MAP处理对水蜜桃贮藏效果的影响。试验结果表明:引起水蜜桃采后病害的病原菌主要有交链孢霉、褐霉、复端孢霉、丝核菌;thymol能抑制这4种病原菌的生长;与对照相比,thymol熏蒸能延缓水蜜桃硬度下降、质膜透性的上升,保持细胞膜的完整性;减缓可滴定酸含量的下降,提高过氧化物酶(POD)活性,抑制多酚氧化酶(PPO)活性的上升;贮存28 d后,经500 mg/L thymol处理的水蜜桃其好果率达79.1%,显示出良好的贮藏效果。

The species of pathogen fungi of honey peaches("Hujinmilu" of Shanghai Nanhui District) as well as the effects of Thymol on the mycelial growth were investigated,and the effects of post-harvest treatment with modified atmosphere packaging and thymol on the physiology and fresh-keeping of honey peaches were studied under 3℃ storage.The results showed that the mainly pathogen fungi which caused the postharvest diseases of peaches were Alternaria,Monilinia fructicola,Cephalothecium,Rhizoctonia;and the thymol dramatically changed the physiological of the peach.It decreased the loss of fruit firmness and titrable acidity,increased membrane permeability.Thymol treatment significantly enhanced POD activity,and inhibited PPO activity.After 28 days,the good fruits rates was 79.1% by using 500 mg/L thymol.The results demonstrate that thymol treatment can increase the quality during storage.