Regulations and mechanisms of 1-methylcyclopropene treatment on browning and quality of fresh-cut lotus (Nelumbo nucifera Gaertn.) root slices
文献类型： 外文期刊
作者： Chen, Jinhui 1 ; Xu, Yuhan 1 ; Yi, Yang 1 ; Hou, Wenfu 1 ; Wang, Limei 1 ; Ai, Youwei 1 ; Wang, Hongxun 1 ; Min, Ting 1 ;
作者机构： 1.Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan 430023, Peoples R China
2.Hubei Collaborat Innovat Ctr Proc Agr Prod, Wuhan 430023, Peoples R China
关键词： 1-MCP; Enzymatic browning; Phenylpropane metabolism; Ethylene biosynthesis; Ethylene signal transduction
期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.751； 五年影响因子：7.001 ）
ISSN： 0925-5214
年卷期： 2022 年 185 卷
页码：
收录情况： SCI
摘要： The quality of fresh-cut lotus root slices is greatly affected by enzymatic browning. In this study, we investigated the effects of 1-methylcyclopropene treatment on browning and quality deterioration of lotus root slices. When fresh-cut lotus root slices were immersed in 0.1 mg L-1 1-MCP for 1 h and stored at 10 celcius for twelve days, microbial growth, respiration, total phenolic content, phenylalanine ammonia lyase activity, polyphenol oxidase activity, and soluble quinone levels in fresh-cut lotus root slices were suppressed. Furthermore, 1-MCP treatment improved the antioxidant capacities, peroxidase activities, superoxide dismutase activities, catalase activities, and DPPH free radical scavenging rates in fresh-cut lotus root slices. In addition, 1-MCP treatment inhibited the production of reactive oxide species, which delayed quality deterioration of fresh-cut lotus root slices. Based on transcriptomics and real-time quantitative PCR results, gene expression levels of NnmetK2, NnACO, NnETR2, NnEIN3, and NnERF1 were up-regulated while expression levels of NnEBF1 were down-regulated. These findings indicate that 1-MCP inhibits ethylene biosynthesis and signal transduction, which suppresses a series of ethyleneinduced physiological and biochemical reactions. Based on our findings, we propose a new strategy for inhibiting enzymatic browning in fresh-cut lotus root slices.
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