FOOD SCIENCE ›› 2019, Vol. 40 ›› Issue (11): 220-226.doi: 10.7506/spkx1002-6630-20180530-427

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CaCl2 Enhances the Biocontrol Efficacy of Candida oleophila against Inoculated Penicillium expansum on Postharvest Apples

CAI Mengxuan1, DENG Lili1,2, YAO Shixiang1,2, ZENG Kaifang1,2,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China; 2. Food Storage and Logistics Research Center, Southwest University, Chongqing 400715, China
  • Online:2019-06-15 Published:2019-06-28

Abstract: The effect and underlying mechanism of Candida oleophila combined with CaCl2 on the biocontrol efficiency of Penicillium expansum inoculated onto postharvest apples were studied in this paper. The results showed that the effect of combined treatment with 1 × 107 CFU/mL C. oleophila and 10 g/L CaCl2 on the control of Penicillium expansum was significantly better than that of C. oleophila. When cultured at 25 ℃, C. oleophila could quickly colonize and grow on wounded apples and maintain a high population. The treatment with 10 g/L CaCl2 could significantly enhance the growth of C. oleophila. Moreover, under the combined treatment, the activities of chitinase and β-1,3-glucanase were significantly induced; meanwhile, the accumulation of lignin, total phenols and flavonoids as metabolites was promoted.

Key words: calcium chloride, Candida oleophila, induced resistance, biocontrol, apple

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