中国农业科学 ›› 2013, Vol. 46 ›› Issue (16): 3424-3431.doi: 10.3864/j.issn.0578-1752.2013.16.013

• 贮藏·保鲜·加工 • 上一篇    下一篇

壳聚糖处理对‘早红考密斯’梨虎皮病抑制和贮藏品质的影响

 王宝刚, 侯玉茹, 李文生, 杨军军, 石磊, 杨媛, 冯晓元   

  1. 北京市农林科学院林业果树研究所,北京 100093
  • 收稿日期:2013-01-16 出版日期:2013-08-15 发布日期:2013-03-22
  • 通讯作者: 王宝刚,Tel:010-62595984;E-mail:wangbg1979@126.com
  • 作者简介:王宝刚,Tel:010-62595984;E-mail:wangbg1979@126.com
  • 基金资助:

    北京市农林科学院青年基金(QN201121)、北京市农林科学院科技创新能力建设专项(KJCX201102004)、公益性行业(农业)科研专项(201303075)

Effects of Chitosan Treatments on Inhibition of Superficial Scald and Quality of European Pears (Pyrus communis L. cv. Early Red Comice) During Storage

 WANG  Bao-Gang, HOU  Yu-Ru, LI  Wen-Sheng, YANG  Jun-Jun, SHI  Lei, YANG  Yuan, FENG  Xiao-Yuan   

  1. Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093
  • Received:2013-01-16 Online:2013-08-15 Published:2013-03-22

摘要: 【目的】探索西洋梨贮藏过程中虎皮病的控制方法及发病规律。【方法】以‘早红考密斯’梨为试材,研究水溶性和酸溶性壳聚糖处理对‘早红考密斯’梨低温(0±0.5)℃贮藏期间虎皮病的抑制效果以及品质的影响。【结果】虎皮病的发生会导致‘早红考密斯’梨果皮细胞质壁分离、死亡,形成褐色或黑色病斑。在贮藏第120天时,1.0% 酸溶性壳聚糖和1.0% 水溶性壳聚糖处理的果实虎皮病发生率分别比对照低63.89%和44.44%。酸溶性和水溶性壳聚糖处理均降低了梨果皮中α-法尼烯的生成及氧化产物共轭三烯的积累,降低了膜脂过氧化作用。同时,还降低了梨果实呼吸强度水平,促进了还原糖的积累,抑制了贮藏前期可滴定酸的下降。【结论】采后壳聚糖处理能够有效地抑制贮藏期间‘早红考密斯’梨虎皮病的发生,并且酸溶性壳聚糖处理抑制虎皮病效果优于水溶性壳聚糖。壳聚糖处理可以作为一种有效而方便的方法用于生产上‘早红考密斯’梨虎皮病的防治。

关键词: &lsquo, 早红考密斯&rsquo, 梨 , 壳聚糖 , 虎皮病 , 品质

Abstract: 【Objective】The control method and development regularity of superficial scald of Early Red Comice during storage were investigated in this paper. 【Method】The effects of water-soluble chitosan (WCTS) or acid-soluble chitosan (ACTS) treatment on the development of superficial scald and quality of European pear (Pyrus communis L. cv. Early Red Comice) were investigated during storage at (0±0.5)℃. 【Result】Superficial scald leads to plasmolysis and ultimately death of fruit skin cell of pear fruit. Afterwards, brown or black lesions appeared on the fruit surface. Compared with WCTS treatment, ACTS could more effectively inhibit the development of superficial scald of pear fruit during storage. Superficial scald incidence in ACTS-treated or WCTS-treated fruit was 63.89% or 44.44% lower than that in control on the 120 d of storage. The accumulation of α-farnesene or conjugated trienes in fruit peel was reduced, membrane lipid peroxidation was weakened by chitosan treatments. The respiration rate of fruit treated with chitosan was lower than that of control. The accumulation of the reducing sugar content was enhanced, but the decline of TA content was inhibited by chitosan treatments in the early days during the storage period. 【Conclusion】Chitosan treatment could inhibit the development of superficial scald of Early Red Comice pear, and ACTS treatment was better than WCTS treatment. Chitosan treatment could be used as an effective and convenient method for control superficial scald development of Early Red Comice pear.

Key words: ‘Early Red Comice&rsquo, pears , chitosan , superficial scald , quality