Effects of exogenous ethylene treatments on sensory properties and metabolism of postharvest blueberry fruits
In order to explore the effect of exogenous ethylene treatments on sensory properties and metabolism of postharvest blueberry fruits,blueberry fruits were exposed to concentrations of ethylene of 0.1,1.0 or 10mL/L at 1℃ for 48h and then transferred to air condition for storage.During the period of storage,fruit sensory properties,ethylene content in pulp,endogenous ethylene production of fresh fruit,respiration rate,fruit firmness,rot rate and the activities of some enzymes that related to disease resistance and senescence were analyzed.The results indicated that compared with control,three kinds of ethylene treatments increased the activities of polyphenol oxidase（PPO）,peroxidase（POD）and phenylalnine ammonialyase（PAL）.Nevertheless,10mL/L ethylene treatment increased the biosynthesis of endogenous ethylene and accelerated the metabolism rate and senescence process,while 0.1mL/L and 1.0mL/L ethylene treatments promoted the disease resistance ability and storability of blueberry fruits.The lightness discrepancy before and after removal of wax was significantly related with the result of sensory evaluation（P0.01）.
国家科技期刊平台
NSTL
万方数据
维普
