文献类型：会议论文

英文题名：Effect of Cold Acclimation Treatment and Exogenous Ethylene Treatment on Woolliness Related Enzymes on 'Okubo' Peach Fruits during Low Temperature Storage

作者：Li, Y. X.[1] Wang, G. X.[1] Liang, L. S.[1]

通信作者：Li, YX[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Beijing, Peoples R China

会议论文集：28th International Horticultural Congress on Science and Horticulture for People (IHC) / International Symposium on Postharvest Technology in the Global Market

会议日期：AUG 22-27, 2010

会议地点：Lisbon, PORTUGAL

语种：英文

外文关键词：firmness; extracted juice; LOX; PE; PG

年份：2012

摘要：Woolliness is one of most common symptom of chilling-injury of peach fruits during low temperature storage. In this experiment, peach fruits (Prunus persica 'Okubo') were stored at three conditions, including 0 degrees C (control), cold acclimation treatment (CAT) and exogenous ethylene treatment (EET), to determine the effects of CAT and EET on the activities of woolliness-related enzymes such as polygalacturonase (PG), pectin esterase (PE) and lipoxygenase (LOX), as well as flesh firmness and fruits extracted juice during storage periods with or without 3 days of shelf-life at 23-24 degrees C. The results are as follows: 1) LOX enzyme activity and PG enzyme activity were significantly positive correlated with woolliness, while the change of PE enzyme activity was not correlated with woolliness directly; 2) woolliness symptoms of peach fruits appeared after 4 weeks storage at 0 degrees C and they were not obvious under CAT and EET methods; 3) CAT and EET increased the PG and LOX enzyme activity respectively, so these methods retarded the woolliness to a certain extent, promoted the fruits ripening normally, and then preferably retained the peach fruits quality during low temperature storage and shelf-life.