Abstract: 0, 50, 100 and 150μl/L four concentration ozones used to treat Cucumis melo L.cv Hetao at 10℃, with soluble sugar, titrtable acid, vitamin C, fruit firmness, weightlessness rate and rot index were assayed. Results showed that proper concentra- tion ozone can effectively maintain storage quality of Cucumis melo L.cv Hetao and prolong the storage time. In different concentration ozones test, 50μl/L was best to maintain quality. The test also found that low concentration ozone is better than high concentration according to quality assesment.

Key words: ozone, Cucumis melo L.cv Hetao, soluble sugar, vitamin C, fruit firmness, weightlessness rate, rot index