Effect of the combined application of chitosan and carbonate salts on the incidence of anthracnose and on the quality of papaya during storage
Effect of the combined application of chitosan and carbonate salts on the incidence of anthracnose and on the quality of papaya during storage
复制标题
壳聚糖与碳酸盐配伍对木瓜炭疽病发生及贮藏品质的影响
DOI：
10.1080/14620316.2005.11511958
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
R. Wijesundera
中科院分区：
文献类型：
--
作者：
D. Sivakumar;Y. Sultanbawa;N. Ranasingh;Predeep Kumara;R. Wijesundera
总结壳聚糖（1%）单独或与碳酸铵（3%）或碳酸氢钠（2%）组合降低番木瓜（Carica papaya L.）炭疽病（Colletotrichum gloeosporioides）发病率的潜力。在13.5°C和95%RH条件下贮藏14 d，在模拟市场条件（25°C，75%RH）下贮藏2 d。壳聚糖单独或与碳酸氢钠或碳酸铵组合显著降低了接种和自然感染果实的炭疽病严重程度（P < 0.005）。壳聚糖与碳酸铵对炭疽病发病率和严重程度的影响大于单独使用壳聚糖或壳聚糖与碳酸氢钠。壳聚糖与碳酸铵联合应用可显著降低炭疽病的发病率（P < 0.005），并能显著提高炭疽病的治愈率（P < 0.005）。与对照果实相比，来自自然感染的果实的Gloeosporioides。食用品质不受这些收获后浸渍处理的影响。壳聚糖与碳酸铵复合处理可显著延缓果皮和果肉着色，提高果实硬度，减少失重，保持了较高的果实品质。内部二氧化碳浓度增加壳聚糖涂层水果达到7%，壳聚糖和碳酸铵处理的水果。因此，壳聚糖与碳酸铵的组合代表了一种商业上可接受的，经济上可行的和有效的替代品，用于番木瓜贮藏期间收获后炭疽病的控制。
Summary The potential of chitosan (1%) alone, or in combination with ammonium carbonate (3%) or sodium bicarbonate (2%), to reduce the incidence of anthracnose (Colletotrichum gloeosporioides) on papaya (Carica papaya L.) and maintain quality was investigated during storage at 13.5°C and 95% RH for 14 d, and for 2 d under simulated market conditions (25°C, 75% RH). Chitosan alone or in combination with sodium bicarbonate or ammonium carbonate significantly (P < 0.005) reduced the severity of anthracnose in both inoculated and naturally-infected fruit. The effect of chitosan with ammonium carbonate on the incidence and severity of anthracnose was greater than chitosan alone, or chitosan with sodium bicarbonate. Chitosan with ammonium carbonate significantly (P < 0.005) reduced the incidence of anthracnose in, and the recovery of C. gloeosporioides from naturally-infected fruit compared to control fruit. Eating quality was not affected by these post-harvest dip treatments. Chitosan with ammonium carbonate retained high fruit quality, significantly (P < 0.005) retarded colour development of skin and flesh, increased fruit firmness and reduced weight loss. Internal carbon dioxide concentrations increased in chitosan-coated fruit to reach 7% in chitosan and ammonium carbonate-treated fruit. Thus, chitosan combined with ammonium carbonate represents a commercially acceptable, economically viable and effective alternative for post-harvest control of anthracnose during storage of papaya.