| 摘要: |
| 为研究在冰温及冰温气调贮藏条件下对冬枣品质的影响，本文将冬枣放于冷库预冷间进行24 h预冷，并用冰点仪按照冻结法测定冬枣的冰点温度后，将按照不同成熟度分为三个等级（0级、1级、2级)的冬枣分别置于冰温（-2.4 ℃）及冰温气调（-2.4 ℃、O2浓度5%和CO2浓度0.5%）条件下，测定贮藏过程中不同成熟度的冬枣的失重率、果肉硬度、果皮硬度、脆性、可溶性果胶含量和Vc含量。结果表明：冰温气调贮藏可有效延缓冬枣的腐化，在整个贮藏过程中，冰温气调贮藏条件下三种等级的冬枣在失重率、脆性、可溶性果胶含量、Vc含量方面显著优于冰温贮藏（P＜0.05）；对于果皮硬度，冰温气调贮藏下1级冬枣优于冰温贮藏，0级和2级冬枣弱于冰温贮藏；对于果肉硬度，与其它普通冷藏气调的研究对比发现冰温贮藏的效果最好，冰温气调贮藏优于普通气调；转红指数低的冬枣贮藏品质相对较好。 |
| 关键词: 园艺学 保鲜技术 冰温气调贮藏 冬枣 |
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| Effect of Ice Temperature and Air Controlling Ice Temperature(ACIT) on Quality of Winter Jujube |
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Song Jianfei1, Liu Bin1, Wu Zijian2, Wang Chao1
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| (1.Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce;2.Tianjin Key Laboratory of Food Biotechnology , Tianjin University of Commerce) |
| Abstract: |
| In order to study the effect of ice temperature and ACIT storage on quality of the winter jujube, we put the jujube in the cold precooling room for 24 hours, and divided them into three levels(0 level,1 level,2 level) according to the different maturity. The jujubes of different levels were then placed under the ice temperature (-2.4 ℃) and ACIT storage conditions (-2.4 ℃, 5% O2 concentration and 0.5% CO2 concentration )，and the weight-loss rate ,flesh hardness, peel hardness, brittleness, soluble pectin content and Vc content of the jujube during storage were measured. The results show that ACIT storage condition can effectively delay the decay of the winter jujube, during the whole process of the storage, three grades jujube under air conditioning ice temperature is significantly better than that of ice temperature storage in terms of weight loss rate, brittleness and soluble pectin content and Vc content（P＜0.05）; for peel hardness, 1 grade jujube under ACIT is better than that under ice temperature storage, 0 grade and 2 grade jujube under ice temperature are better than that under ACIT; for flesh hardness, we can get that ice-temperature storage condition has a better effect than ACIT which is better than the common controlled atmosphere storage（P＜0.05）; the quality of the low red index jujube is relatively good. |
| Key words: horticulture preservation technology ACIT winter jujube |
