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Food Chem

Title:		Postharvest hot air and UV-C treatments enhance aroma-related volatiles by simulating the lipoxygenase pathway in peaches during cold storage
Author(s):		Zhou D; Sun Y; Li M; Zhu T; Tu K;
Address:		"College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China. College of Engineering, The Postdoctoral Station of Agricultural Engineering, Nanjing Agricultural University, Nanjing 210095, China. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China. Electronic address: kangtu@njau.edu.cn"
Journal Title:		Food Chem
Year:		2019
Volume:		20190412
Issue:
Page Number:		294 - 303
DOI:		10.1016/j.foodchem.2019.04.049
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"Hot air (HA) treatment and ultraviolet C (UV-C) irradiation have been demonstrated to control chilling injury in peaches. However, little is known about the effects of HA and UV-C treatments on volatiles changes in peach fruit during cold storage. In this study, peaches were treated with HA at 40?ª+ degrees C for 4?ª+h or irradiated with UV-C lamp (1.5?ª+kJ/m(2)), and then stored at 1?ª+ degrees C for 35?ª+days plus 3?ª+days of shelf life at 20?ª+ degrees C. Results showed that HA and UV-C suppressed chilling injury significantly, exhibiting lower internal browning index. Also, the two treatments enhanced emissions of esters and lactones in peaches by increasing enzymes of alcohol acyltransferase (AAT), fatty acid desaturase (FAD) acetyl coenzyme A transferase (ACX). These suggested that the increase of fruity note aromas in peaches by the two treatments is closely associated with aroma-related metabolism (LOX pathway and lactone pathway)"
Keywords:		Acyltransferases/metabolism Cold Temperature Fatty Acid Desaturases/metabolism Food Storage Fruit/chemistry/metabolism Lactones/metabolism Lipoxygenases/*metabolism Prunus persica/*chemistry/metabolism/radiation effects *Ultraviolet Rays Volatile Organic;
Notes:		"MedlineZhou, Dandan Sun, Ye Li, Mengyu Zhu, Tong Tu, Kang eng England 2019/05/06 Food Chem. 2019 Sep 15; 292:294-303. doi: 10.1016/j.foodchem.2019.04.049. Epub 2019 Apr 12"