Comparative volatile compounds and primary metabolites profiling of pitaya fruit peel after ozone treatment

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作者: Wu, Qixian ; Zhang, Zhengke ; Zhu, Hong ; Li, Taotao ; Zhu, Xiangrong ; Gao, Huijun ; Yun, Ze ; Jiang, Yueming
刊名: Journal of the science of food and agriculture
期刊所屬國別:
出版年: 201903
關鍵字: Acids ; Aging ; Arabinose ; Aromatic compounds ; Chemistry, Organic ; Decay ; Food industry and trade ; Fructose ; Fruit ; Glucaric acid ; Inositol ; Malic acid ; Mannose ; Metabolites ; Ozone ; Ozonization ; Peroxidase ; Polyphenol oxidase ; Reactive Oxygen Species ; Stearic acid ; Succinic acid ; Xylene
摘要: "BACKGROUND Ozone treatment can effectively inhibit fruit decay in many fruits during postharvest storage. However, little information is available for pitaya fruit. RESULTS Ozone treatment significantly reduced the decay rate and induced the enzyme activities of peroxidase and polyphenol oxidase, and also reduced the levels of reactive oxygen species. In total, 103 metabolites were detected and changed the content after ozone treatment, including 54 primary metabolites and 49 aromatic compounds. After significance and importance analysis, 37 metabolites were important. Some metabolites were induced by peel senescence to respond to senescence stress, including d‐fructose, d‐glucose, mannose, inositol, galactonic acid, ethanedioic acid and stearic acid. Some metabolic products of peel senescence were reduced by ozone treatment, including d‐arabinose, glucaric acid, galacturonic acid, 1‐hexanol, 4‐ethylcyclohexanol, β‐linalool, palmitoleic acid and 2‐hydroxy‐cyclopentadecanone. Some metabolites induced by ozone treatment might play a vital role in delaying the senescence and decay, including malic acid, succinic acid, pentenoic acid, eicosanoic acid, 2‐hexenal, hexanal, 2‐heptenal, 4‐heptenal, 2‐octenal and nitro m‐xylene. CONCLUSION Ozone treatment significantly reduced decay and prolonged shelf‐life without reducing fruit quality. In total, 37 metabolites might play an important role in ozone delayed fruit decay. © 2018 Society of Chemical Industry"
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