梨采后细胞壁成分及果胶酶活性与果肉质地的关系

园艺学报 ›› 2004, Vol. 31 ›› Issue (5): 579-583.

梨采后细胞壁成分及果胶酶活性与果肉质地的关系

刘剑锋^1,2;程云清²;彭抒昂^1*

(¹ 华中农业大学园艺林学学院, 武汉430070 ; ²吉林师范大学生命科学学院, 四平136000)

收稿日期:2003-11-03 修回日期:2003-12-17 出版日期:2004-10-25 发布日期:2004-10-25
通讯作者: 彭抒昂

The Relationship between Changes of Cell Wall Components, ectin-degradingEnzyme Activity and Texture of Postharvest Pear Fruit

Liu J ianfeng^1,2;Cheng Yunqing²;Peng Shupang^1*

(¹ College of Horticulture and Forest ry , Huazhong Agricultural University , Wuhan 430070 , China ; ² College of Life Science , Jilin Normal University , Siping 136000 , China)

Received:2003-11-03 Revised:2003-12-17 Online:2004-10-25 Published:2004-10-25
Contact: Peng Shupang

摘要/Abstract

摘要： 以果实质地有明显差异的‘黄花’和‘湘南’梨为试材, 研究了细胞壁组分、钙含量、果实硬
度以及果胶代谢酶类活性的变化。结果表明, 两品种上述指标有相同的变化趋势, 但还存在以下差异: 1) 贮藏性差的黄花梨纤维素含量、原果胶含量、果实硬度相对较低, 而果实钙含量、水溶性果胶含量较高; 2) 黄花梨木质素含量较高, 且生成木质素的速率较快; 3) 黄花梨果实的多聚半乳糖醛酸酶(PG) 活性在贮藏前期极显著高于湘南梨果实, 末期两品种差异较小, 而果胶甲酯酶(PME) 活性极显著高于湘南梨。

关键词: 梨, 果实, 细胞壁物质, PG, PME, 钙

Abstract: ‘Huanghua’and ‘Xiangnan’pears were used as materials to understand changes of cell wall components , calcium content , fruit firmness and activity of pectin-degrading enzyme in relation to their texture. The results show that changing trends of the above change of two cultivars were similar , but some differences exist , 1) Compared with‘Xiangnan’, content of cellulose , proto pectin and fruit firmness of‘Huanghua’being poor storeability was lower , while content of calcium , water-soluble pectin was higher ; 2) Content and synthetic rate of lignin in flesh of ‘Huanghua’pear was higher ; 3)Polygalacturonase (PG) activity of ‘Huanghua’was significantly higher than that of ‘Xiangnan’during early storage , but there was little difference in PGactivity at late storage stage. However , pectinmethylesterase (PME) activity of‘Huanghua’was significantly higher than that of ‘Xiangnan’.

Key words: Pear, Fruit, Cell wall components, Polygalacturonase, Pectinmethylesterase, Calcium

中图分类号:

S 661.2

刘剑锋;程云清;彭抒昂. 梨采后细胞壁成分及果胶酶活性与果肉质地的关系[J]. 园艺学报, 2004, 31(5): 579-583.

Liu J ianfeng;Cheng Yunqing;Peng Shupang. The Relationship between Changes of Cell Wall Components, ectin-degradingEnzyme Activity and Texture of Postharvest Pear Fruit[J]. ACTA HORTICULTURAE SINICA, 2004, 31(5): 579-583.

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