Health Benefits Of Onion
While onion’s health promoting abilities have long been recognized, it’s only recently that their considerable curative abilities have been conclusively demonstrated and thus their elevation to Superfood status.
Onions are a major source of two phytonutrients that play a significant role in health promotion: flavonoids and the mixture of over fifty sulfur-containing compounds. The two flavonoid subgroups found in onions are the anthocyanins that impart a red/purple colour to some varieties, and the flavanols such as quercetin and its derivatives that are responsible for the yellow flesh and brown skins of many varieties of onions. The flavonols are concentrated in the skin of most onions where they contribute to the colour of the vegetable.
We now know that the health promoting compounds in onion, like those in garlic, are separated by cell walls. Slicing an onion ruptures these walls and releases the compounds which then combine to form a powerful new compound: thiopropanal sulfoxide. In addition to mitigating various diseases, this substance also gives cut onions their pungent aroma and their ability to make us cry. (more…)