Articles
EFFICACY OF BIOCONTROL YEASTS AGAINST PENICILLIUM EXPANSUM AND PATULIN ON DIFFERENT CULTIVARS OF APPLE IN POSTHARVEST
Article number
873_19
Pages
191 – 196
Language
English
Abstract
The postharvest environment is particularly delicate for the maintenance of quality and safety of apples, since storage time can approach 10 months or more.
Quantity and quality losses due to fungal diseases can be really severe.
The application of antagonistic microorganisms could be used against Penicillium expansum, the causal agent of blue mould rot on pome fruit and the main producer of a mycotoxin named patulin.
The aim of the present study was to determine the efficacy of antagonistic yeasts in reducing the development of P. expansum on apples and its capacity to produce patulin.
The biocontrol effectiveness was assessed on four apple cultivars (Golden Delicious, Stark Delicious, Granny Smith and Royal Gala). After storage at room temperature, the diameter of the rotten area, the percentage (w/w) of the rot and the concentration of patulin were measured.
The results showed that the highest biocontrol activity was provided by a strain of Rhodotorula sp. on the four cultivars.
Work is in progress to ascertain whether the reduction of patulin is due to an absorbance or to a biodegradation established by the antagonistic yeasts.
Quantity and quality losses due to fungal diseases can be really severe.
The application of antagonistic microorganisms could be used against Penicillium expansum, the causal agent of blue mould rot on pome fruit and the main producer of a mycotoxin named patulin.
The aim of the present study was to determine the efficacy of antagonistic yeasts in reducing the development of P. expansum on apples and its capacity to produce patulin.
The biocontrol effectiveness was assessed on four apple cultivars (Golden Delicious, Stark Delicious, Granny Smith and Royal Gala). After storage at room temperature, the diameter of the rotten area, the percentage (w/w) of the rot and the concentration of patulin were measured.
The results showed that the highest biocontrol activity was provided by a strain of Rhodotorula sp. on the four cultivars.
Work is in progress to ascertain whether the reduction of patulin is due to an absorbance or to a biodegradation established by the antagonistic yeasts.
Publication
Authors
D. Spadaro, A. Garibaldi, M.L. Gullino
Keywords
biological control, blue mould, food safety, HPLC, Malus × domestica, mycotoxins, Rhodotorula sp.
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