There is about 20.9% of oxygen in the atmosphere, Oxygen is essential for the existence of humans and animals, but when trying to preserve products, especially for food products, it can be a harmful influence. By accelerating deterioration and becoming an important factor for generating various organisms, it is quite harmful for foods.
As the plant grows, it spouts the various gases. Among the various, the ethylene gas is connected in the growth or maturity of the plants. As kind of unsaturated hydrocarbon, the ethylene gas accelerates the growth and maturity of the plants.