HUANG Shian,DONG Xiaoqing,CAI Mingjia,et al.Effects of Melatonin Treatment on Fruit Quality and Physiological Characteristics of Postharvest ‘Fengtang Plum’[J].Northern Horticulture,2021,(18):103-110.[doi:10.11937/bfyy.20210575]
褪黑素对采后“蜂糖李”果实品质和生理特性的影响
- Title:
- Effects of Melatonin Treatment on Fruit Quality and Physiological Characteristics of Postharvest ‘Fengtang Plum’
- 文献标志码:
- A
- 摘要:
- 以“蜂糖李”果实为试材，采用150 μmol·L-1外源褪黑素溶液（MT）浸泡处理果实20 min，以清水处理20 min为对照（CK），晾干后置于室温（25±1）℃条件下贮藏，测定处理对采后“蜂糖李”果实品质及生理指标的影响,以期为“蜂糖李”贮藏保鲜的理论研究提供参考依据。结果表明：外源MT处理显著抑制果实硬度,可滴定酸（TA）、抗坏血酸（ASA）含量降低，抑制了叶绿素、花青素降解以及丙二醛（MDA）的产生和积累；有效提高果实可溶性固形物（SSC）、可溶性糖、可溶性蛋白质、类黄酮、游离脯氨酸、还原型谷胱甘肽（GSH）含量；降低果实中脂氧合酶（LOX）活性，提高果实苯丙氨酸解氨酶（PAL）、超氧化物歧化酶（SOD）、过氧化氢酶（CAT）、抗坏血酸过氧化物酶（APX）活性；同时外源褪〖JP3〗黑素处理也减缓了果实感官品质的下降，保持果实较好的色泽和风味。综上，150 μmol·L-1〖JP〗褪黑素溶液浸泡处理可以有效减缓“蜂糖李”果实品质下降、保持生理特性，从而提高了“蜂糖李”果实常温下的贮藏特性。
- Abstract:
- The fruits of ‘Fengtang Plum’ were used as experimental materials and were soaked in 150 μmol·L-1 exogenous melatonin solution (MT) for 20 minutes,and treated with water for 20 minutes was served as control (CK).After drying,the fruits were stored at room temperature of (25±1)℃ to determine the effects of treatment on the fruit quality and physiological indexes of postharvest ‘Fengtang Plum’,in order to provide a reference for the theoretical research on the storage and presercation of ‘Fengtang Plum’.The results showed that exogenous MT significantly inhibited the decreasing of fruit firmness,titrable acid (TA) content and ascorbic acid (ASA) content,inhibited the degradation of chlorophyll,anthocyanin and the production and accumulation of malondialdehyde (MDA).Exogenous MT treatment effectively improved the contents of soluble solid content (SSC),soluble sugar,soluble protein,free proline and reduced glutathione (GSH) in fruits.Exogenous MT treatment decreased the activity of lipoxygenase (LOX),and effectively increased the activities of phenylalanine ammonia lyase (PAL),superoxide dismutase (SOD),catalase (CAT),ascorbic acid peroxidase (APX) in fruits.At the same time,the treatment of exogenous MT also slowed down the deterioration of fruit sensory quality and kept the fruit color and flavor better.In summary,the treatment with 150 μmol·L-1MT solution can effectively slow down the quality decline and maintain the physiological characteristics of ‘Fengtang plum’,thereby improving the storage characteristics of ‘Fengtang Plum’ fruit at room temperature.
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备注/Memo
第一作者简介：黄世安（1997-），男，硕士研究生，研究方向为果蔬采后生理与贮藏保鲜。E-mail:1562026966@qq.com.责任作者：董晓庆（1980-），女，博士，副教授，硕士生导师，现主要从事果蔬采后生理与分子生物学等研究工作。E-mail:xiaoqingdong09@163.com.基金项目：国家自然科学基金资助项目（31960620）；贵州省自然科学基金资助项目（20201Y122）；贵州省科技厅成果转化资助项目（20164035）。收稿日期：2021-02-03