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Improvement of Candida Sake Biocontrol Activity Against Post-Harvest Decay by the Addition of Ammonium Molybdate

Improvement of Candida Sake Biocontrol Activity Against Post-Harvest Decay by the Addition of Ammonium Molybdate

C Nunes, J Usall, N Teixidó, I Viñas

J Appl Microbiol. 2002;92(5):927-35.

PMID: 11972698

Abstract:

Aim:
To improve the efficacy of Candida sake by adding ammonium molybdate to control post-harvest decay in Golden Delicious apples.
Methods and results:
In laboratory trials, C. sake 2 x 10(6) cfu ml(-)1 plus 5 mmol l(-1) ammonium molybdate greatly reduced Penicillium expansum, Botrytis cinerea or Rhizopus stolonifer in apples stored at 20 degrees C for 7 days, and reduced by more than 90% blue and grey mould in apples stored at 1 degrees C for 60 days. The consistency of these results was maintained in semi-commercial trials at 1 degrees C in air and in a low oxygen atmosphere for 120 days. The pre-harvest application of C. sake 2 x 10(7) cfu ml(-1) plus 1 mmol l(-1) ammonium molybdate did not improve post-harvest biocontrol of blue mould. The population of C. sake significantly decreased in the presence of ammonium molybdate in apple wounds.
Conclusion:
The addition of ammonium molybdate at 5 mmol l(-1) to C. sake enhanced the efficacy of the antagonist to control post-harvest diseases on apples.
Significance and impact of the study:
Ammonium molybdate significantly reduces the amount of C. sake biomass required to achieve post-harvest disease control, with a consequent reduction in costs. This may be useful in the industrial production of C. sake.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP13106768	Ammonium molybdate		13106-76-8	Price

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