中国农业科学2012，Vol.45Issue(4)：752-760,9.DOI:10.3864/j.issn.0578-1752.2012.04.016
热空气处理诱导冷藏橄榄果实抗冷性及其与膜脂代谢的关系
Hot-Air Treatment Induced Chilling Tolerance of Cold-Stored Chinese Olive Fruits and Its Relation to the Metabolism of Membrane Lipids
摘要
Abstract
[Objective] The effects of hot-air treatment on chilling tolerance of cold-stored Chinese olive fruits in relation to the changes of lipoxygenas (LOX) activity and fatty acid constituents of membrane lipids were investigated. [Method] The harvested 'Tanxiang' Chinese olive [Canarium album (Lour.) Raeusch cv. Tanxiang] fruits were pre-treated with hot-air at 38°C for 30 minutes and then packed into sealed polyethylene bags (0.015 mm thickness) and stored at (2±1)°C. Chilling injury index and cellular membrane permeability of fruit, LOX activity and fatty acid constituents of membrane lipids in pericarp of Chinese olive fruits during cold storage were determined. [Result] As compared to the control fruit, there were lower fruit chilling injury index, cellular membrane permeability and pericarp LOX activity in cold-stored Chinese olive fruits pre-treated with hot-air at 38 °C for 30 minutes. The contents of unsaturated fatty acids in pericarp, such as palmitoleic acid (C16:1), linoleic acid (C18:2) and linolenic acid (C18:3) increased, while the contents of saturated fatty acids in pericarp, such as myristic acid (C14:0), palmitic acid (C16:0) and stearic acid (C18:0) decreased, and index of unsaturated fatty acids (IUFA) and unsaturated degree of fatty acids in pericarp increased. [Conclusion] It is suggested that the enhancement of chilling tolerance and the alleviation of chilling injury in cold-stored Chinese olive fruits by hot-air treatment may be due to the decrease of LOX activity in pericarp, which may reduce the degradation of unsaturated fatty acids of membrane lipids and maintain higher unsaturated degree of fatty acids.关键词
橄榄/冷害/抗冷性/脂氧合酶/脂肪酸/热空气处理Key words
Chinese o\ive[Canarium album (Lour.) Raeusch]/chilling injury/chilling tolerance/lipoxygenase/fatty acid/hot-air treatment引用本文复制引用
孔祥佳,林河通,郑俊峰,林艺芬,陈艺晖..热空气处理诱导冷藏橄榄果实抗冷性及其与膜脂代谢的关系[J].中国农业科学,2012,45(4):752-760,9.基金项目
国家科技支撑计划专项(2007BAD07B06)、福建省自然科学基金项目(C94015)、福建省教育厅科技项目(JA02208)、福建省高等学校新世纪优秀人才支持计划(闽教科(2007]20号) （2007BAD07B06）
