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当前位置: 首页 > 文章 > 不同采收期对鸭梨采后贮藏香气成分的影响 食品科学 2010,31 (10) 292-295
Position: Home > Articles > Effect of Harvesting Time on Volatile Composition of 'Ya' Pears during Postharvst Storage FOOD SCIENCE 2010,31 (10) 292-295

不同采收期对鸭梨采后贮藏香气成分的影响

作  者：
刘向平;寇晓虹;张平;李江阔;黄艳凤;王一州;吴彩娥
单  位：
天津大学仁爱学院;天津大学农业与生物工程学院;国家农产品保鲜工程技术中心;南京林业大学森林资源与环境学院
关键词：
鸭梨;采收期;香气成分;顶空固相微萃取;气相色谱仪
摘  要：
香气成分的损失是梨果实贮藏期间风味裂变的主要表现之一,掌握不同成熟度梨果实香气变化规律对建立基于风味品质变化的梨果实采收和贮藏技术有重要意义。采用SPME-GC的方法,对不同采收期(早、中、晚)鸭梨果实贮藏期间的主要香气成分进行分析,结果表明,鸭梨果实的主要香气成分为乙酸乙酯、己醛、己醇、丁酸乙酯、己酸乙酯等。采收期不同对鸭梨果实贮藏期间香气成分变化有明显的影响。早采鸭梨香气成分的产生受到抑制,贮藏期间含量一直较低;在贮藏初期,晚采梨果实采收后香气成分总含量高于早采和中采果实,但贮藏过程中香气容易散失,贮藏后期下降较快;中期采收的梨果实贮藏期间香气成分逐渐积累,贮藏6个月时大部分香气成分含量显著高于早采和晚采果实(P<0.05)。
译  名：
Effect of Harvesting Time on Volatile Composition of 'Ya' Pears during Postharvst Storage
作  者：
LIU Xiang-ping1,KOU Xiao-hong2,ZHANG Ping3,LI Jiang-kuo3,HUANG Yan-feng3,WANG Yi-zhou2,WU Cai-e4 (1. College of Renai, Tianjin University, Tianjin 301636, China;2. School of Agricultural and Bioengineering, Tianjin University, Tianjin 300072, China;3. National Engineering Technology Research Center for Preservation of Agricultural Products, Tianjin 300384, China;4. College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China)
关键词：
'Ya' pear;harvest time;volatile component;HS-SPME;GC
摘  要：
The loss of volatile components is partially attributed to the flavor changes of pears during postharvest storage. As a consequence, the understanding of changing patterns of volatile composition of pears with different degree of maturity will make a vital contribution to the development of pear harvesting and storage techniques. The main volatile components of 'Ya' pears harvested at different times (early, middle and late) were measured by SPME-GC every 2 months during 6 months of storage. The results showed that the main volatile components in 'Ya' pears were ethyl acetate, hexanal, 1-hexanol, butanoic acid, ethyl ester, hexanoic acid and ethyl ester. A significant effect of harvesting time was observed on the volatile composition of 'Ya' pears. Lower contents of volatile components found in early harvested pears were kept over the whole storage period. Higher contents of volatile components were observed in late harvested pears. However, there was a significant decrease in them with the extended storage period and a dramatic loss of volatiles was seen during the later stage of storage. In middle harvested pears, volatile components were gradually accumulated and exhibited a significantly higher content than those in early and late harvested pears after 6 months of storage (P<0.05).

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