Ozone gas fights grape mold by starving fungal cells of energy
Crop Improvement
The mold that turns your stored grapes soft and fuzzy can potentially be stopped with a gas treatment instead of chemical fungicides, meaning cleaner fruit on your table and less food waste in the supply chain.
Table grapes often rot in storage because of a fungus that causes blue mold. Researchers discovered that treating the fungus with ozone gas overloads its cells with reactive oxygen molecules, which then wrecks its internal energy factories (mitochondria) and triggers a self-destruct process, essentially killing the mold from the inside out. This could give grape growers and shippers a non-chemical tool to keep fruit fresh during transport and storage.
Key Findings
Ozone exposure induced excessive reactive oxygen species (ROS) accumulation in Talaromyces rugulosus cells, triggering oxidative stress
The ROS buildup damaged mitochondrial function and disrupted energy metabolism, leading to programmed cell death (apoptosis) in the fungus
Ozone treatment effectively controlled postharvest blue mold decay in table grapes, suggesting a viable non-chemical preservation method
chevron_right Technical Summary
Scientists found that ozone gas kills the fungus responsible for blue mold rot on grapes by triggering a chain reaction inside its cells that destroys its energy production and causes cell death, offering a chemical-free way to keep stored table grapes fresh longer.
Species Mentioned
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Table grapes are grapes intended for consumption as fresh fruit, as opposed to grapes grown for wine production, juice production, jelly and jam making, or for drying into raisins.