摘要
该研究以采后成熟芒果为试材,探究低温条件下褪黑素对其低温贮藏生理生化的影响。研究设计褪黑素处理及对照组处理,将褪黑素溶液和无菌水喷施成熟芒果表面后晾干,置于8℃恒温培养箱贮藏,每隔3 d测定其生理生化指标,为探讨褪黑素对熟芒果低温贮藏品质的影响。试验结果表明,冷害指数随着贮藏天数延长而慢慢上升,处理组整体冷害指数比对照组低,并于第15天后出现显著性差异;对照组的失重率出现2个峰值,处理组失重率则缓慢上升;在整个贮藏期处理组与对照组相比,呼吸速率均呈显著性差异;可溶性糖含量随贮藏时间延长而上升,处理组和对照组在前6天呈显著差异;可滴定酸含量随贮藏时间延长下降,在贮藏的前9天,处理组的可滴定酸含量下降较慢、对照组下降较快;抗坏血酸含量随贮藏时间呈持续下降趋势,18天内2组相对降幅均接近50%,处理组降低芒果各贮藏阶段的抗坏血酸含量,调控效果在贮藏中期达到峰值;处理组可有效抑制芒果采后MDA的积累,但调控效果在贮藏中期效果最显著。该研究结果显示,褪黑素处理对成熟芒果具有保鲜作用,作用在处理前9天效果更显著。
In this study,the effects of melatonin on the physiology and biochemistry of post-harvest mature mango under low temperature storage were investigated.In order to investigate the effect of melatonin on the storage quality of mature mangoes at low temperature,melatonin treatment and control group treatment were designed.Melatonin solution and sterile water were sprayed on the surface of mature mangoes and dried,and stored at 8℃constant temperature incubator.The physiological and biochemical indexes were measured every 3 days to explore the effect of melatonin on the storage quality of mature mangoes at low temperature.The results showed that the chilling injury index increased slowly with the extension of storage days.The overall chilling injury index of the treatment group was lower than that of the control group,and there was a significant difference after 15 days.The weight loss rate of the control group showed two peaks,while the weight loss rate of the treatment group increased slowly.During the whole storage period,the respiration rate of the treatment group was significantly different from that of the control group.The soluble sugar content increased with the extension of storage time,and there was a significant difference between the treatment group and the control group in the first 6 days.The titratable acid content decreased with the prolongation of storage time.In the first 9 days of storage,the titratable acid content of the treatment group decreased slowly,and the control group decreased rapidly.The ascorbic acid content decreased continuously with the storage time,and the relative decrease of the two groups was close to 50%within 18 days.The treatment group reduced the ascorbic acid content of mango at each storage stage,and the control effect reached the peak in the middle of storage.The treatment group could effectively inhibit the accumulation of MDA in mango after harvest,but the regulation effect was the most significant in the middle stage of storage.The results of this study showed that melatonin treatment had a preservation effect on mature mango,and the effect was more significant in the first 9 days of treatment.
出处
《智慧农业导刊》
2026年第4期20-24,共5页
JOURNAL OF SMART AGRICULTURE
基金
国家级大学生创新创业训练计划项目(202310609036)
百色市科技计划项目(百科字(2022)37号)。
关键词
褪黑素
芒果
低温贮藏
生理指标
品质
melatonin
mango
low-temperature storage
physiological indicator
quality
