Effects of Ectoine Treatment on the Physiological Quality of Nectarines at Room Temperature
The effects of ectoine treatment on the physiological quality of nectarine fruits during room temperature storage were investigated in this study.Nectarine fruits were soaked with 3 g/L ectoine and ultra-pure water as exper-imental group and control group,respectively,and stored at(20±1)℃ with relative humidity of 85％～90％after draining,and then the physiological qualities of nectarine fruits were determined regularly(every 3 days).The results showed that ectoine treatment delayed the occurrence of ethylene peak,and reduced the respiratory peak by 7.25％compared with control group,thereby inhibiting the softening and weight loss of the fruits,maintaining relatively high soluble solid contents and brightness.Besides,ectoine treatment also improved the total phenols contents and delayed the de-cline of ascorbic acid contents,greatly inhibiting the fruits decay with decay indices reduced by 42.42％at room tem-perature.Meanwhile,the treatment inhibited the activity of polyphenol oxidase and induced the activity of peroxidase.Principal component analysis showed that the physiological qualities of nectarine fruits treated with ectoine were more stable.Therefore,ectoine treatment could effectively prolong the storage time of nectarines at room temperature and maintain better storage qualities.These results would provide theoretical basis and practical reference for maintaining postharvest physiological qualities of nectarine fruits.
万方数据
维普
