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This study aimed to develop the application of 405 nm LEDs to reduce the spoilage risk of bananas in the distribution chain. Fusarium oxysporum was spread-plated onto dichloran rose bengal chloramphenicol agar and illuminated with an array of 405 nm light emitting diodes at mean irradiances ranging from 0.5–2.2 mW/cm². A minimum irradiance of 2.2 ± 0.9 mW/cm² was required to bring about an antifungal effect, with the mold population reduced below the detection limit within 6 h of illumination. This was attributed to the presence of porphyrins (5.46 ± 2.49 fg/CFU) in the F. oxysporum spores, as determined by high pressure liquid chromatography. A statistically significant (P > 0.05) 70% reduction was observed relative to the control group when the bananas were spot-inoculated on their stem scar with Fusarium, stored under simulated warehouse conditions (15.0 °C and 80.0% RH for 24 h) and …