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Changes of Sensory Quality, Flavor-Related Metabolites and Gene Expression in Peach Fruit Treated by Controlled Atmosphere (CA) under Cold Storage

文献类型： 外文期刊

作者： Liu, Hongru 1 ; He, Hui 1 ; Liu, Chenxia 1 ; Wang, Chunfang 1 ; Qiao, Yongjin 1 ; Zhang, Bo 2 ;

作者机构： 1.Shanghai Acad Agr Sci, Crop Breeding & Cultivat Res Inst, Shanghai 201403, Peoples R China

2.Zhejiang Univ, Lab Fruit Qual Biol, Zhejiang Prov Key Lab Hort Plant Integrat Biol, Hangzhou 310058, Peoples R China

关键词： peach; controlled atmosphere; chilling injury; aroma volatiles; sensory quality; gene expression

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 13 期

页码：

收录情况： SCI

摘要： Controlled atmosphere (CA) has been used to alleviate chilling injury (CI) of horticultural crops caused by cold storage. However, the effects of CA treatment on peach fruit sensory quality and flavor-related chemicals suffering from CI remain largely unknown. Here, we stored peach fruit under CA with 5% O-2 and 10% CO2 at 0 degrees C up to 28 d followed by a subsequent 3 d shelf-life at 20 degrees C (28S3). CA significantly reduced flesh browning and improved sensory quality at 28S3. Though total volatiles declined during extended cold storage, CA accumulated higher content of volatile esters and lactones than control at 28S3. A total of 14 volatiles were positively correlated with consumer acceptability, mainly including three C6 compounds, three esters and four lactones derived from the fatty acid lipoxygenase (LOX) pathway. Correspondingly, the expression levels of genes including PpLOX1, hyperoxide lyase PpHPL1 and alcohol acyltransferase PpAAT1 were positively correlated with the change of esters and lactones. CA elevated the sucrose content and the degree of fatty acids unsaturation under cold storage, which gave us clues to clarify the mechanism of resistance to cold stress. The results suggested that CA treatment improved sensory quality by alleviating CI of peach fruits under cold storage.

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