关键词: 低温, 减压, 臭氧, 冬枣保鲜

Abstract: The effects of low temperature, hypobaric and ozone treatments on physiological activities and biochemical attributes of Dong Jujube fruit during storage were studied, and suitable conditions for storage of Dong Jujube fruit were obtained. The results showed that hypobaric or ozone treatment reduced respiratory rate, inhibited the activities of amylase and ascorbic acid oxidase, slowed down degradation rates of starch and ascorbic acid, inhibited reproduction of mold spores, reduced fruit rot and kept fruit firmness. Application of hypobaric storage reduced chilling injury of Dong Jujube fruit and, thus lower storage temperature could be used. Based on the orthogonal experiments, Zhanhua Dong Jujube fruit treated with 300 mg·m-3 ozone for 0.5 h at 10 days intervals were stored at -2℃ and 40.5 kPa under the condition of enough humidity, the accepted fruit percentage was 92.6% after 140 days of storage.

Key words: Low temperature, Hypobaric, Ozone, Fresh-keeping of Dong Jujube