臭氧处理对采后黄瓜贮藏品质的影响

Effects of ozone treatment on the storage quality of postharvest cucumber

中文关键词:  臭氧处理  黄瓜  贮藏品质

英文关键词:ozone treatment  cucumber  storage quality

中文摘要:

      目的 研究不同浓度臭氧处理对采后黄瓜贮藏品质的影响。方法 分别用浓度为1、3和5 μg/mL臭氧处理用微孔膜包装的黄瓜15 min, 每隔1 d处理1次, 于7 ℃冷库中贮藏, 并通过测定黄瓜硬度、可溶性固形物、可滴定酸、维生素C、叶绿素、丙二醛、过氧化物酶活性等指标来确定处理黄瓜的合适臭氧浓度。结果 与对照组相比, 采用5 μg/mL浓度的臭氧处理可保持黄瓜较好的硬度, 减缓叶绿素、抗坏血酸、可滴定酸和可溶性固形物等营养成分的降低, 有效抑制丙二醛的积累, 抑制过氧化物酶的活性。结论 臭氧处理可以保持黄瓜的生理生化指标, 提高黄瓜的贮藏品质, 其中5 μg/mL的臭氧处理效果最好。

英文摘要:

      Objective To investigate the effects of ozone treatment on the storage quality of postharvest cucumber. Methods The cucumbers packed in micro-porous film were treated with 1, 3 and 5 μg/mL ozone for 15 min every other day at 7 ℃. The hardness, total soluble solids (TSS), titratable acid (TA), vitamin C, chlorophyll, malonaldehyde (MDA) and peroxidase (POD) activity were detected to determine the proper concentration of ozone. Results Compared with the control group, 5 μg/mL ozone could sustain high hardness, reduce the decline rate of chlorophyll, vitamin C, TA and TSS content, prevent the accumulation of MDA, and inhibit the activity of POD effectively. Conclusion Ozone treatment can maintain physiological and biochemical indexes and improve the storage quality of cucumber effectively, and 5 μg/mL ozone has the best effect.