Effect of Near-Freezing Temperature Storage on the Quality and Organic Acid Metabolism of Apple Fruit
文献类型： 外文期刊
作者： Shu, Chang 1 ; Liu, Bangdi 2 ; Zhao, Handong 4 ; Cui, Kuanbo 5 ; Jiang, Weibo 1 ;
作者机构： 1.China Agr Univ, Coll Food Sci & Nutr Engn, Beijing 100083, Peoples R China
2.Minist Agr & Rural Affairs, Acad Agr Planning & Engn, Beijing 100125, Peoples R China
3.Minist Agr & Rural Affairs China, Key Lab Agroprod Primary Proc, Beijing 100125, Peoples R China
4.Qilu Univ Technol, Sch Food Sci & Engn, Jinan 250353, Peoples R China
5.Xinjiang Acad Agr Sci, Agr Mechanizat Inst, Urumqi 830091, Peoples R China
关键词： Malus domestica Borkh.; ice temperature; postharvest quality; malate metabolism
期刊名称：AGRICULTURE-BASEL （ 影响因子：3.3； 五年影响因子：3.5 ）
ISSN：
年卷期： 2024 年 14 卷 7 期
页码：
收录情况： SCI
摘要： Organic acids play critical roles in fruit physiological metabolism and sensory quality. However, the conventional storage of apple fruit at 0 +/- 0.1 degrees C cannot maintain fruit acidity efficiently. This study investigated near-freezing temperature (NFT) storage for 'Golden Delicious' apples, and the quality parameters, organic acid content, and malate metabolism were studied. The results indicate that NFT storage at -1.7 +/- 0.1 degrees C effectively maintained the postharvest quality of apple fruit when compared to traditional storage at 0 +/- 0.1 degrees C. Fruit that underwent NFT storage showed a better appearance and lower respiratory rate, ethylene production, weight loss, and malondialdehyde (MDA) content but higher firmness and soluble solids content. Further, fruit after NFT storage contained higher titratable acid (18.75%), malate (51.61%), citrate (36.59%), and succinate (2.12%) content when compared to the control after 250 days. This was achieved by maintaining higher cytosolic NAD-dependent malate dehydrogenase (cyNAD-MDH), phosphoenolpyruvate carboxylase (PEPC), vacuolar H+-ATPase (V-ATPase), and vacuolar inorganic pyrophosphatase (V-PPase) activities that promote malate biosynthesis and accumulation while inhibiting enzyme activity that is responsible for malate decomposition, including phosphoenolpyruvate carboxylase kinase (PEPCK) as well as the cytosolic NAD phosphate-dependent malic enzyme (cyNADP-ME). Further, storage at NFTs maintained a higher expression of malate biosynthesis-related genes (MdcyNAD-MDH and MdPEPC) and transport-related genes (MdVHA and MdVHP) while suppressing malate consumption-related genes (MdcyME and MdPEPCK). The results demonstrate that NFT storage could be an effective application for apple fruit, which maintains postharvest quality and alleviates organic acid degradation.
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