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Biological control of Botrytis cinerea growth on apples stored under modified atmospheres.

Floros, J. D.; Dock, L. L.; Nielsen, P. V.;

Journal of Food Protection Year: 1998 Vol: 61 Issue: 12 Pages: 1661-1665

1998

บทคัดย่อ

Biological control of Botrytis cinerea growth on apples stored under modified atmospheres.

The combined effect of modified-atmosphere packaging and the application of a bacterial antagonist (Erwinia sp.) on Botrytis cinerea growth on apples (cv. Golden Delicious) was investigated. Inoculated apples were stored in polyethylene bags at 5 deg C. The initial gas composition in each bag was set according to a central composite experimental design involving 5 levels of O2 (1-15%) and CO2 (0-15%). Control samples under ambient conditions were also included. Without the antagonist, measurements of mould colony diameter over time showed that O2 had no effect on the growth of B. cinerea, while increased CO2 levels delayed its growth by approx. 4 days. Application of the antagonist resulted in a significant interaction between O2 and CO2. At low O2 levels, CO2 had no effect on mould growth, but at high O2, CO2 enhanced mould growth. O2 and the antagonist worked synergistically to reduce mould growth by approx. 6 days at low levels of CO2. However, at high CO2 levels, O2 had no effect. The strong

est antagonistic effect was observed under ambient conditions. Generally, high CO2 atmospheres slowed the growth of B. cinerea, and Erwinia sp. was an effective antagonist against B. cinerea growth on apples, particularly under ambient conditions.