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Multiple metabolomics comparatively investigated the pulp breakdown of four dragon fruit cultivars during postharvest storage

文献类型： 外文期刊

作者： Wu, Qixian 1 ; Zhang, Zhengke 4 ; Gao, Huijun 3 ; Zhu, Hong 1 ; Duan, Xuewu 1 ; Jiang, Yueming 1 ; He, Junxian 6 ; Yun, Ze 1 ;

作者机构： 1.Chinese Acad Sci, Key Lab South China Agr Plant Mol Anal & Genet Imp, Guangzhou 510650, Peoples R China

2.Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, South China Natl Bot Garden, Guangzhou 510650, Peoples R China

3.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangzhou 510650, Peoples R China

4.Hainan Univ, Coll Food Sci & Technol, Haikou, Peoples R China

5.China Tobacco Guangdong Inductrial Co Ltd, Technol Ctr, Guangzhou, Peoples R China

6.Chinese Univ Hong Kong, Sch Life Sci, Shatin, Hong Kong, Peoples R China

7.Chinese Univ Hong Kong, State Key Lab Agrobiotechnol, Shatin, Hong Kong, Peoples R China

关键词： Aldehydes and alcohols; Amino acids profiling; Firmness-related quality; Hydrocarbons; Primary metabolites profiling; Sugars-related quality; Secondary metabolites-related quality; Volatiles profiling

期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：8.1； 五年影响因子：7.7 ）

ISSN： 0963-9969

年卷期： 2023 年 164 卷

页码：

收录情况： SCI

摘要： Pulp breakdown is the main reason for the reduction of fruit quality. However, there are relatively few studies on small molecule metabolites based on the pulp breakdown of dragon fruit. In this study, four dragon fruit cultivars were comparatively analyzed during pulp breakdown. According to five firmness-related and six quality-related indicators, the pulp breakdown rates from low to high were 'Baiyulong (WP, with white pulp)', 'Dahong (RP, with red pulp)', 'Hongshuijing (CRP, with red pulp)' and 'Baishuijing (CWP, with white pulp)'. Five secondary metabolites showed cultivar-specific accumulation, and the increase of their contents during postharvest storage might be related to delaying pulp breakdown. After multiple metabolomics analysis, a total of 186 metabolites were identified, among which 14 primary metabolites, 23 volatiles, 2 hydrolyzed amino acids and 12 free amino acids were considered as key metabolites. The contents of hydrocarbons in WP and RP were much higher than that in CWP and CRP, which was negatively correlated with pulp breakdown. White pulp were rich in amino acids, while red pulp had more soluble sugars, aldehydes and terpenes. The contents of 13 key metabolites increased during pulp breakdown in all four cultivars, mainly including amino acids and alkanes. The contents and changes of those key metabolites might directly or indirectly respond to the pulp quality and resistance of dragon fruit.

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