采前壳寡糖处理对柑橘果实贮藏品质的影响

Effect of Pre-harvest Oligochitosan Treatment on Storage Quality of Citrus Fruits

研究采前壳寡糖处理对柑橘果实炭疽病菌的抑制作用及其对柑橘果实贮藏品质的影响。结果表明,壳寡糖对柑橘炭疽病菌孢子的萌发和菌落直径的扩展都具有明显的抑制作用。采前喷施质量分数1.5%壳寡糖处理可以提高柑橘果实采收时的单果重,降低烂果率和落果率,对减少柑橘果实的潜伏菌无明显作用。此外,采前壳寡糖处理对柑橘果实失重率、硬度、可溶性蛋白、可溶性固形物和可滴定酸等贮藏品质具有显著的影响。

The effects of pre-harvest oligochitosan treatment on Colletotrichum gloeosporioides Penz and the storage quality of citrus fruit were studied in this paper. The results indicated that pre-harvest oligochitosans treatment was capable of increasing the fruit weight and reducing the fruit rotten ratio and drop rate while no marked effect was observed on decreasing the incidence of latent infection. The results also suggested that oligochitosans had obvious effects on storage qualities such as water loss, firmness, the content of soluble protein, soluble solids and titratable acid. Our findings would provide some theoretical basis for the application of oligochitosan in the citrus fruit storage.