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标题：Exogenous Melatonin Reduces Lignification and Retains Quality of Green Asparagus ( Asparagus officinalis L.)
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作者：Athip Boonsiriwit ; Myungho Lee ; Minhwi Kim 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2021
卷号：10
期号：9
DOI：10.3390/foods10092111
语种：English
出版社：MDPI Publishing
摘要：Asparagus ( Asparagus officinalis L.) is highly perishable because of its high respiration rate, which continues after harvesting and leads to weight loss, increased hardness, color change, and limited shelf life. Melatonin is an indoleamine that plays an important role in abiotic stress. This study was designed to investigate the effects of melatonin on the quality attributes of green asparagus during cold storage. Green asparagus was soaked in a melatonin solution (50, 100, and 200 μM) for 30 min and then stored at 4 °C under 90% relative humidity for 25 days. The results indicated that melatonin treatment delayed the post-harvest senescence of asparagus and maintained high chlorophyll and vitamin C levels. Melatonin treatment hindered phenylalanine ammonia-lyase and peroxidase activities and reduced lignin content, thereby delaying the increase in firmness. Moreover, melatonin treatment enhanced catalase and superoxide dismutase activities, leading to reduced hydrogen peroxide content. These results indicate that melatonin treatment can be used to maintain the post-harvest quality and prolong the shelf life of green asparagus.
关键词：enasparagus;melatonin;shelf life;lignification;post-harvest treatment