低温贮藏对菠萝细胞壁降解的影响  

Effects of Low Temperature on Cell Wall Degradation of Postharvest Pineapple

作　　者：屈红霞[1] 唐友林[1] 谭兴杰[1] 潘小平[1] 刘林[1] 

机构地区：[1]中国科学院华南植物研究所,广州510650

出　　处：《园艺学报》2000年第1期23-26,共4页Acta Horticulturae Sinica

基　　金：广东省自然科学基金!资助项目(970 65 4 )

摘　　要：菠萝在贮藏过程中PG、PE活性升高 ,水溶性糖醛酸含量增加 ,硬度降低 ,同时果肉组织细胞表现为细胞壁微纤丝层次性排列被破坏 ,中胶层电子密度降低。低温可延缓水溶性糖醛酸含量的增加和硬度的下降 ,抑制PG和PE活性 ,从而抑制细胞壁的降解。Decrease of fresh firmness,increase of soluble polyuronide content,polygalactu ronase (PG)and pectin esterase(PE)activity were found during storage of pineapple.At the ultrastructural level,irregular thickening of the cell wall,dissolution of the middle lamella were observed at advanced stages of softening.The increase of PG and PE activity,soluble polyuronide content and decrease of fresh firmness could be postponed by low temperature.

关 键 词：菠萝 超微结构 PG PE 细胞壁降解 低温贮藏 

分 类 号：S668.301[农业科学—果树学] S668.309.3[农业科学—园艺学]