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

ACTA HORTICULTURAE SINICA ›› 2004, Vol. 31 ›› Issue (5): 579-583.

• 研究论文 • Previous Articles Next Articles

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

Abstract

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

CLC Number:

S 661.2

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

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