Are purple onions more nutritious than white onions?

　　Onion Also known as scallions, round onions, shallots, and pearl onions. It is a specialty vegetable with high nutritional value, combining nutrition, medicine, and health benefits. Similar to garlic, onions also contain allicin and selenium sulfide, which can inhibit the synthesis of carcinogens and promote the destruction of cancer cells by phagocytic cells, thus having anti-cancer effects. Is purple-skinned onion better in terms of nutrition?

Onions can be divided into three types based on their skin color: white, yellow, and purple. White-skinned onions have tender flesh and high moisture and sweetness. When cooked for a long time, they have a golden color and rich sweetness, making them suitable for fresh eating, baking, or stewing. They have a lower yield. Purple-skinned onions have slightly reddish flesh and strong spiciness, suitable for stir-frying or LettuceSalad Poor storage characteristics;Yellow-skinned onions are mostly for export. Their flesh is slightly yellow, tender and fine, with a sweet and spicy flavor, suitable for raw consumption or dipping in sauce, and have good storage characteristics, often used as dehydrated vegetables.

In terms of nutritional value, purple-skinned onions are slightly better. This is mainly due to the stronger spiciness of purple-skinned onions, which means they contain more allicin. Furthermore, the purple skin of purple-skinned onions contains more quercetin, which is also a very beneficial health component for the human body. Therefore, the health benefits of purple-skinned onions are much better than those of white-skinned onions. Onion wine is a very wonderful health recipe. Wash, peel, and chop the onions. If using purple-skinned onions, you don't need to remove the purple skin, as it enhances the fermentation process.