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园艺学报 ›› 2002, Vol. 29 ›› Issue (3): 214-217.

• 研究论文 • 上一篇    下一篇

冷激处理对香蕉后熟软化及相关酶活性的影响

段学武1,3;庞学群2;张昭其1,3*;季作梁1
  

  1. (1华南农业大学园艺学院, 广州 510642; 2 华南农业大学生物技术学院, 广州 510642)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-06-25 发布日期:2002-06-25

Effects of Cold Shock Treatment on Softening of Postharvest Banana and Some Related Enzymes Activities

Duan Xuewu1, Pang Xuequn2, Zhang Zhaoqi1, and Ji Zuoliang1
  

  1. (1 College of Horticulture, South China Agricultural University, Guangzhou 510642, China; 2 College of Biotechnology, South China Agricultural University, Guangzhou 510642, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-06-25 Published:2002-06-25

摘要: 以‘巴西’香蕉(Musa nana‘Baxi’) 为材料, 研究了冷激处理对果实常温下后熟软化的影响。结果表明, - 20 ℃冷空气处理2.5 h明显延迟了后熟软化; 同时也延缓了多聚半乳糖醛酸酶(PG)和淀粉酶活性上升, 进而抑制了果胶和淀粉的降解, 对维持香蕉硬度起重要作用。

关键词: 香蕉, 冷激处理, 软化, PG酶, 淀粉酶

Abstract: The effect of cold shock treatment on softening of postharvcest‘Baxi’bananas was investigated. The results showed that the treatment of - 2-0 ℃ cold air for 2. 5 h significantly delayed fruit softening. Cold shock treatment inhibited the activities of polygalacturonase and amylase , and delayed the degradations of pectin and starch which resulted in a delay in fruit softening and a maintainance of fruit firmness. However , cold shock treatment did not affect the pectinesterase activity which decreased gradually during fruiting softening.

Key words: Banana, Cold shock treatment, Softening, Polygalacturonase, Amylase

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