After the onion sprouting and will not be like potatoes or peanuts, the production of lobelia alkaloids or aflatoxin type of toxic substances, after eating will not have a toxic effect on the human body, so it is safe to eat.

Onions are more drought-resistant, so even in dry places, generally can maintain a better degree of freshness, so in the preservation of the need to be placed in a cool, dry place, if placed in a humid warm place, easy to lead to germination or mold, affecting the quality of the onion.