Ethanol and acetaldehyde had concentration dependent effects on ethylene
production (Fig. 1). Ethanol at the higher concentrations (0.5 and 1.0%) increased
ethylene production, as did the lower concentrations of acetaldehyde
(0.1 and 0.5%). The ethylene production rate of the 1.0% acetaldehyde treated discs was
not significantly different from the control discs, the increased ethylene production
induced by the lower concentrations of acetaldehyde having been eliminated.