褪黑素对采后百香果果实冷害与贮藏特性的影响-《集美大学学报（自然科学版）》

文章信息/Info

Title:: Effects of Melatonin on the Chilling Injury and Storage Characteristics of Postharvest Passion Fruit

作者:: 张珅1; 杨静1; 沈俊男1; 李雨函1; 汪莹1; 魏好程1; 陈东晓1; 庄展中2; 洪菲菲3; 何凡; 1.集美大学海洋食品与生物工程学院，福建厦门 361021；2.漳州市万怡农业发展有限公司, 福建漳州 363000；3.绿新（福建）食品有限公司, 福建漳州 363107

Author(s):: ZHANG Shen1; YANG Jing1; SHEN Junnan1; LI Yuhan1; WANG Ying1; WEI Haocheng1; CHEN Dongxiao1; ZHUANG Zhanzhong2; HONG Feifei3; HE Fan1; 1.College of Ocean Food and Biological Engineering,Jimei University,Xiamen 361021,China;2.Zhangzhou Wanyi Agricultural Development Co.,Ltd.,Zhangzhou 363000,China;3.Green Fresh(Fujian) Food Stuff Co.,Ltd.,Zhangzhou 363107,China

Keywords:: melatonin; passion fruit; chilling injury; storage quality; cold stress

摘要:: 采用不同浓度褪黑素（melatonin，MT）溶液对黄金百香果果实进行采后处理，探究果实冷藏期间低温胁迫导致的品质劣变现象及MT处理的控制作用;进一步研究适宜浓度MT处理对果实冷藏期间品质和耐贮性的影响，并阐释它们与低温劣变的关系。结果表明，果皮异常褐变和转色障碍是黄金百香果果实发生冷害的主要症状，不同浓度MT处理能够减轻冷害症状，并且延缓果皮失水以及果实失重率、褐变指数、腐烂率升高；0.2 mmol/L MT处理效果较好，该浓度MT处理可减缓果皮a*值、b*值升高，维持较高的贮藏末期L*值，同时延迟果皮叶绿素、果浆总可溶性固形物（total soluble solid，TSS）和可滴定酸（titratable acid，TA）含量，以及果实硬度下降，从而保持较好的商品品质；同时，该处理抑制果实呼吸速率、果皮细胞膜透性和丙二醛（malondialdehyde，MDA）含量升高，提高并维持果皮腐胺和脯氨酸含量，提高果实耐贮性。

Abstract:: In this study, different concentrations of melatonin (MT) were employed to treat postharvest golden passion fruit, and the improvement of MT treatment on fruit decay caused by cold stress during refrigeration were also investigated. The effects of optimal concentration MT treatment on quality and storability of fruit during cold storage were examined, and the relationship between them and cold-induced decay was further illustrated. The results indicated that the main symptoms of chilling injury of golden passion fruit are the abnormal browning and de-greening disorder. After treatment with different concentrations of MT, all above chilling injury symptoms were reduced, and the losses of pericarp moisture and fruit weight, browning index and decay rate of fruit were alleviated. 0.2 mmol/L MT treatment could maintain the commercial quality of golden passion fruit via slowing down the increase of pericarp a* and b* values, maintaining higher L* value at late storage, delaying the decrease in pericarp chlorophyll content,pulp total soluble solid(TSS) and titratable acid(TA) content,and fruit firmness. Again,0.2 mmol/L MT treatment improved the storability of golden passion fruit by inhibiting respiration rate, cell membrane permeability and malondialdehyde(MDA) content, while increasing the contents of pericarp putrescine and proline in peel.