| 3种果蜡对红肉火龙果活性氧代谢的影响 |
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| 引用本文： | 黄耀豪,钟荣彬,杜冬冬,丰锋,王俊宁.3种果蜡对红肉火龙果活性氧代谢的影响[J].热带生物学报,2017,8(2). |
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| 作者姓名： | 黄耀豪 钟荣彬 杜冬冬 丰锋 王俊宁 |
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| 作者单位： | 1. 广东海洋大学农学院,广东湛江,524088;2. 广东海洋大学农学院,广东湛江524088;广东省现代农业(特色园艺)产业技术研发中心,广东湛江524088 |
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| 基金项目： | 广东海洋大学“创新强校工程”项目，广东海洋大学大学生创新训练项目，国家级农科教合作人才培养项目，专业综合改革试点专业项目，教育部卓越农林人才培养计划 |
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| 摘 要： | 以红肉火龙果为材料,研究SP-1、高亮和丽展精3种果蜡处理对果实失重率和活性氧代谢的影响。结果表明:果蜡处理极显著地抑制了火龙果果实失重率的增加,延缓了可溶性固形物(TSS)含量的下降,有利于果实品质的保持。在活性氧代谢方面,果蜡处理显著地降低了火龙果贮藏中期(4~6 d)果实中脂肪氧化酶(LOX)的活性,极显著提高了贮藏期间抗坏血酸过氧化物酶(APX)活性和贮藏后期过氧化物酶(POD),过氧化氢酶(CAT)活性,极显著地抑制果实内超氧化物歧化酶(SOD)活性的下降和贮藏前6 d果实中H_2O_2的积累和O_2~-.生成速率。不同果蜡处理,对火龙果果实失重率的下降、活性氧产生和保护酶活性的影响差异很大,其中SP-1果蜡的保鲜效果最好,其次为高亮型果蜡(柑橘类)。
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| 关 键 词： | 红肉火龙果 果蜡 活性氧代谢 失重率 |
Effects of Wax Coatings on Active Oxygen Metabolism of Red-fleshed Pitaya Fruit |
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| HUANG Yaohao,ZHONG Rongbin,DU Dongdong,FENG Feng,WANG Junning.Effects of Wax Coatings on Active Oxygen Metabolism of Red-fleshed Pitaya Fruit[J].Journal of Tropical Biology,2017,8(2). |
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| Authors: | HUANG Yaohao ZHONG Rongbin DU Dongdong FENG Feng WANG Junning |
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| Abstract: | Red-fleshed pitaya (Hylocerus polyrhizus) fruit were coated with three waxes (SP-1,Gaoliang and Lizhangjing) to observe their weight loss rate and active oxygen metabolism.The results showed that wax coatings significantly inhibited the increase of weight loss rate and delayed the decline of total soluble solids (TSS) content,and hence were beneficial to fruit quality.Wax coatings significantly reduced the lipoxygenase (LOX) activities of the pitaya fruit at the mid stage of storage (at days 4-6 after storage),highly significantly increased the ascorbate peroxidase (APX) activities at the storage stage and the activities of peroxidase (POD) and catalase (CAT) at the late storage stage,and highly significantly inhibited the decrease of superoxide dismutase (SOD) activities,the accumulation of H2O2 contents and the production rate of O2-· at the first 6 days of storage.The three waxes had different effects on the weight loss rate,active oxygen production and the activities of protective enzyme of the pitaya fruit.Of the three waxes the SP-1 wax had the best effect on the fruit quality,followed by'Gaoliang'wax. |
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| Keywords: | Red-fleshed pitaya fruit waxing active oxygen metabolism weight loss rate |
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