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J Sci Food Agric

Title:		Comparative volatile compounds and primary metabolites profiling of pitaya fruit peel after ozone treatment
Author(s):		Wu Q; Zhang Z; Zhu H; Li T; Zhu X; Gao H; Yun Z; Jiang Y;
Address:		"Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, No.723 Xingke Road, Tianhe District, Guangzhou, China. University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, China. College of Food Science and Technology, Hainan University, No.58 Haidiandao Renmin Street, Haikou, China. Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, No. 80 Dafeng Two Street, Tianhe District, Guangzhou, China"
Journal Title:		J Sci Food Agric
Year:		2019
Volume:		20181214
Issue:		5
Page Number:		2610 - 2621
DOI:		10.1002/jsfa.9479
ISSN/ISBN:		1097-0010 (Electronic) 0022-5142 (Linking)
Abstract:		"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, beta-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. (c) 2018 Society of Chemical Industry"
Keywords:		Aldehydes/analysis/metabolism Cactaceae/chemistry/*drug effects/growth & development/metabolism Fruit/chemistry/drug effects/growth & development/*metabolism Ozone/*pharmacology Volatile Organic Compounds/*chemistry/metabolism delayed fruit decay ozone pi;
Notes:		"MedlineWu, Qixian Zhang, Zhengke Zhu, Hong Li, Taotao Zhu, Xiangrong Gao, Huijun Yun, Ze Jiang, Yueming eng 31671911/National Natural Science Foundation of China/ 2016A020210061/Science and Technology Planning Project of Guangdong Province of China/ 2015A030310459/Guangdong Provincial Natural Science Foundation/ 201610010041/Pearl River S&T Nova Program of Guangzhou/ England 2018/11/13 J Sci Food Agric. 2019 Mar 30; 99(5):2610-2621. doi: 10.1002/jsfa.9479. Epub 2018 Dec 14"