Ethylene Gas for Ripening Fruit

Principle: Ethylene gas causes fruits to ripen or decay. And this process usually is well controlled during the period of  shipping or storage of the fruit and vegetable. Thus, the ethylene gas will make you have something ready to eat ( yellow bananas, red tomatoes, and soft avocados ). Study how those ripening processes are controlled. For example, some sulfur dioxide is applied to control the native yeast and bacteria.