文献类型：期刊文献

英文题名：Elevated O2 alleviated anaerobic metabolism in postharvest winter jujube fruit by regulating pyruvic acid and energy metabolism

作者：Li, Dong[2];Li, Li[2];Li, Wenxuan[2];Xu, Yanqun[2,3];Han, Xueyuan[4];Bao, Nina[1];Sheng, Zhanwu[5];Yuan, Yaya[6];Zhang, Xingtao[1];Luo, Zisheng[2,3,7]

机构：[1]Suzhou Univ, Sch Biol & Food Engn, Suzhou 234000, Peoples R China;[2]Zhejiang Univ, Coll Biosyst Engn & Food Sci, Key Lab Agroprod Postharvest Handling Minist Agr &, Hangzhou 310058, Peoples R China;[3]Zhejiang Univ, Ningbo Innovat Ctr, Ningbo 315100, Peoples R China;[4]Shaoxing Univ, Sch Life & Environm Sci, Shaoxing 311800, Peoples R China;[5]Chinese Acad Trop Agr Sci, Haikou Expt Stn, Haikou 570101, Peoples R China;[6]Zhejiang Business Technol Inst, Ningbo 315000, Peoples R China;[7]Zhejiang Univ, Coll Biosyst Engn & Food Sci, Hangzhou 310058, Peoples R China

年份：2023

卷号：203

外文期刊名：POSTHARVEST BIOLOGY AND TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001012992500001)、、Scopus(收录号：2-s2.0-85159615268)、WOS

基金：The research was financially supported by the National Natural Science Foundation of China (31972114, 32272369, 32272776, 32001748, 32202555) and the fellowship of China Postdoctoral Science Foundation (2021M702861) .

语种：英文

外文关键词：Elevated O 2; Winter jujube fruit; Ethanol and acetaldehyde; Pyruvic acid metabolism; Energy metabolism

外文摘要：Over-accumulation of anaerobic metabolites is a typical characteristic of postharvest senescence in winter jujube fruit. Here, elevated O2 was applied during cold storage to investigate its regulation on anaerobic respiration. The results found 60 % O2 was the optimal concentration to inhibit anaerobic respiration, which showed 83.82 % lower acetaldehyde and 57.13 % lower ethanol compared with control. Elevated O2 maintained energy status by activating succinate dehydrogenase and cytochrome C oxidase, with 1.11-fold higher energy charge observed as compared with the control. In addition, activated aerobic respiration also accelerated the consumption of pyruvic acid, and pyruvic acid content was reduced by 63 % in elevated O2-treated fruit. Sufficient energy supply and reduced pyruvic acid content in elevated O2-treated fruit induced the alleviation of anaerobic respiration, leading to attenuating the accumulation of ethanol and acetaldehyde as a result. The study proved elevated O2 repressed anaerobic metabolism by regulating pyruvic acid level and energy metabolism.