摘要
为了研究高温短时热空气处理对枇杷果实冷害和品质的影响,采用45℃热空气2、3、4 h处理采后枇杷(解放钟)果实,分析冷藏(5℃)期间其品质和相关生理指标的变化。结果表明,经45℃3 h热处理的果实冷藏后品质最佳,冷害最轻。该处理能显著降低果实失重率、硬度和果皮难剥离程度的上升,保持较高的果肉出汁率;提高果实冷藏期间超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)和谷胱甘肽还原酶(GR)的活性,降低过氧化氢(H2O2)和丙二醛(MDA)的含量;抑制苯丙氨酸解氨酶(PAL)的活性,减少木质素的积累。
It was investigated that the effects of hot air treatment at 45 ℃ for 2,3 or 4 h on the chilling injury and quality of loquat fruits（Jiefangzhong） during storage at 5 ℃.It was found that hot air treatment at 45 ℃ for 3 h maintained the best quality and showed the lowest chilling injury.It could effectively inhibit the weight loss and firmness decreasing,keeping easier peeling and higher juicing rate.The activity of superoxide dismutase（SOD）,catalase（CAT）,ascorbate peroxidase（APX） and glutathione reductase（GR） were increased and the content of peroxide（H2O2） and malonaldehyde（MDA） were reduced.The treatment also inhibited the phenylalanine ammonia-lyase（PAL） activity and reduced the content of lignin.
出处
《果树学报》
CAS
CSCD
北大核心
2011年第5期837-842,共6页
Journal of Fruit Science
基金
国家自然科学基金(No.31000825)
浙江省自然科学基金(No.Y3090537)
浙江省大学生科技创新活动计划(新苗人才计划
No.2010R405036)
宁波市农业攻关项目(No.2010C10021)
国际科学基金(IFS.No.E/4412-1)
关键词
枇杷
高温短时
热空气处理
活性氧代谢
木质素
Loquat
High-temperature
Short-time
Hot air treatment
Antioxidant enzyme activity
Lignin
