| 梨采后细胞壁成分及果胶酶活性与果肉质地的关系 |
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| 引用本文： | 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. |
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| 作者姓名： | 刘剑锋 程云清 彭抒昂 |
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| 作者单位： | ( 华中农业大学园艺林学学院, 武汉430070 ; 吉林师范大学生命科学学院, 四平136000) |
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| 基金项目： | 国家自然科学基金项目 (3 9870 5 17)，教育部重点项目 (重点 0 2 14 2 ) |
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| 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。
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| 关 键 词： | 梨 果实 细胞壁物质 PG PME 钙 |
| 文章编号： | 0513-353X(2004)05-0579-05 |
| 收稿时间： | 2003-11-3 |
| 修稿时间： | 2003-12-17 |
The Relationship between Changes of Cell Wall Components,Pectin-degrading Enzyme Activity and Texture of Postharvest Pear Fruit |
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| Liu Jianfeng ,Cheng Yunqing,and Peng Shu'ang.The Relationship between Changes of Cell Wall Components,Pectin-degrading Enzyme Activity and Texture of Postharvest Pear Fruit[J].Acta Horticulturae Sinica,2004,31(5):579-583. |
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| Authors: | Liu Jianfeng Cheng Yunqing and Peng Shu'ang |
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| Institution: | ( College of Horticulture and Forest ry , Huazhong Agricultural University , Wuhan 430070 , China ; College of Life Science , Jilin Normal University , Siping 136000 , China) |
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| 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’. |
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| Keywords: | Pear Fruit Cell wall components Polygalacturonase Pectinmethylesterase Calcium |
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