| 火龙果采后贮藏品质变化及活性氧代谢规律 |
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| 引用本文： | 张绿萍,金吉林,邓仁菊.火龙果采后贮藏品质变化及活性氧代谢规律[J].南方农业学报,2012,43(4):506-510. |
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| 作者姓名： | 张绿萍 金吉林 邓仁菊 |
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| 作者单位： | 贵州省果树科学研究所,贵阳,550100 |
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| 基金项目： | 贵州省科技计划项目(黔科合院所创能[2010]4009);贵州省农业科学院重点科研基金项目(黔农科合08032号) |
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| 摘 要： | 目的]寻找影响火龙果耐贮性的关键生理代谢因子,为火龙果的贮藏保鲜提供理论依据.方法]以火龙果晶红龙(白肉)和紫红龙(红肉)为试材,通过测定其相关内含物、活性氧含量及活性氧代谢相关酶活性,比较不同火龙果的耐贮性.结果]整个贮藏过程中,晶红龙的失重率和鳞片、果皮、果肉的含水量及果皮变薄的速度均高于紫红龙,在可溶性同形物、蛋白质、维生素C等含量方面则是紫红龙高于晶红龙,但两种火龙果内含物的变化规律及幅度基本一致.在活性氧相关代谢方面,晶红龙的Or2含量低于紫红龙,而POD和CAT的酶活性高于紫红龙;两种火龙果的Or2含量均呈先下降后上升再下降的变化趋势,从而诱导SOD活性呈同样的变化趋势,POD和CAT的活性则呈先上升后下降的变化趋势.结论]活性氧积累是影响火龙果耐贮性的关键因子,而其他贮藏品质变化对耐贮性的影响不明显.
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| 关 键 词： | 火龙果 贮藏品质 活性氧代谢 变化规律 耐贮性 |
Post harvest changes in storage quality and active oxygen metabolism in pitaya(Hylocereus undatus) |
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| ZHANG Lü-ping,JIN Ji-ling,DENG Ren-ju.Post harvest changes in storage quality and active oxygen metabolism in pitaya(Hylocereus undatus)[J].Journal of Southern Agriculture,2012,43(4):506-510. |
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| Authors: | ZHANG Lü-ping JIN Ji-ling DENG Ren-ju |
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| Institution: | (Guizhou Fruit Institute,Guiyang 550100,China) |
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| Abstract: | Objective]Key metabolic factors affecting storability of pitaya(Hylocereus undatus) were identified in order to optimize pitaya storage conditions.Method]The storability of pitaya varieties,viz.,Zihonglong(white pulp) and Jinghonglong(red pulp) was compared on the basis of inclusion,active oxygen content and its relative metabolism enzyme activities.Result]During the storage,Jinghonglong fruits had more water in scales,pericarp and pulp compared to those in Zihonglong,in addition,its weight loss rate and the rate of turning into thinner pericarp was higher than Zihonglong.However,Zihonglong fruits had higher soluble solids,protein and vitamin C content.The changes in inclusion of fruits during storage period were basically the same in both cultivars.Regarding active oxygen metabolism,Jinghonglong had more POD and CAT activities and less O2 content compared to Zihonglong.O2 content in both cultivars decreased initially followed by an increase and sudden decline at the end.The activity of SOD showed similar trends.The activity of POD and CAT increased initially and then decreased.Conclusion]It was concluded that active oxygen accumulation was one of critical factor affecting storability of pitaya fruits,and changes in other quality had no obvious effect on storability. |
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| Keywords: | pitaya(Hylocereus undatus) storage quality active oxygen metabolism change rule storability |
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