浙江农林大学学报2018，Vol.35Issue(3)：476-482,7.DOI:10.11833/j.issn.2095-0756.2018.03.011
短波紫外线结合热处理对黄瓜冷害及抗氧化代谢的影响
Chilling injury and antioxidative metabolism in cucumber with combined UV-C and heat treatment
摘要
Abstract
To reduce the incidence of chilling injury for cucumber during storage and transportation, the effects of ultraviolet (UV)-C and heat treatment alone or in combination on chilling injury, membrane permeability, malondialdehyde, ascorbic acid, total phenol, total antioxidant capacity, and antioxidant enzyme activities of a cucumber variety called 'Deltastar' stored at 4 ℃ were studied. Results showed that compared with the con-trol, UV-C and heat treatment alone, 5.0 kJ·m-2 UV-C combined with heat at 37℃could induce higher antiox-idant enzyme activities, such as superoxide dismutase (SOD), catalase activities (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) in cucumber. Higher total phenolics, ascorbic acid content, and total antioxidant capacity were also realized; thereby, delaying membrane oxidation caused by the accumulation of reactive oxygen species with low temperature stress. So, the combined treatments prevented an increase in the relative leakage rate and the accumulation of malondialdehyde; thus reducing the occurrence of chilling injury. At the same time, UV-C combined with the heat treatment also maintained a better hardness, more soluble solids, and greater chlorophyll content. Overall, UV-C and heat treatment inhibited the chilling injury of cu-cumber synergistically making this study beneficial for reduction of chilling injury and maintenance of cucum-ber during storage and transportation at low temperatures.关键词
植物学/黄瓜/冷害/短波紫外线/热处理/抗氧化代谢Key words
botany/cucumber/chilling injury/UV-C/heat treatment/antioxidative metabolism分类
农业科技引用本文复制引用
郝佳诗,王愈,尹建云,杨虎清..短波紫外线结合热处理对黄瓜冷害及抗氧化代谢的影响[J].浙江农林大学学报,2018,35(3):476-482,7.基金项目
浙江省自然科学基金资助项目(Y14C200052) （Y14C200052）
