Effect of Suitable Ozone Treatment on Postharvest Quality of Muskmelon
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Abstract:
In this paper, the melon “Xizhoumi No.25” was treated with suitable ozone at the temperature of at 6~8 ℃ and RH of 80~85% for 40 min through a ozone generator in a plastic bucket of 50 L. After ozone treatment, the samples were sealed for storage. The dynamic changes of relevant quality indexes of melon treated by appropriate ozone during a 42-day storage and the antibacterial effects of suitable ozone treatment on Alternaria alternata and Fusarium were investigated. The results showed that the average sugar content and hardness of melon decreased by only 0.07% and 0.03%, respectively, after ozone treatment (concentration 4.28 mg/cm3, Intervals 24 h), indicating ozone had significant delaying effect on the decrease. Simultaneously, ozone treatment also reduced the weightlessness of the control group by 42%. It had a strong antibacterial effect on F.semitectum and A.alternate and has a better antibacterial effect on A.alternate. Appropriate ozone treatment had a good effect on the post-harvest low-temperature storage quality of melon and extended its shelf life.
