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- Onion are very rich in healthy soluble fibers called fructans. In fact, onions are among the main dietary sources of fructans.
- Anthocyanins. Only found in red or purple onions, anthocyanins are powerful antioxidants and pigments that give these onions their reddish color.
- Quercetin extracted from yellow onion skin. An antioxidant flavonoid, may lower blood pressure and successfully inhibited the growth of Helicobacter pylori (H. pylori) and Methicillin-resistant Staphylococcus aureus (MRSA)
- Sulfur compounds. These are mainly sulfides and polysulfides, which may protect against cancer.
- Thiosulfinates. These sulfur-containing compounds may inhibit the growth of harmful microorganisms and prevent the formation of blood clots.
- yellow onions may contain almost 11 times more antioxidants than white onions.
- Onions contain over 25 different varieties of flavonoid antioxidants.
- onions provide onionin A, a sulfur-containing compound that has been shown to decrease tumor development and slow the spread of ovarian and lung cancer.
- Onions contain fisetin and quercetin, flavonoid antioxidants that may inhibit tumor growth.
- Onions are particularly rich in the prebiotics inulin and fructooligosaccharides.
Shared Reference Notes
- [1.1] [#Quercetin]
- #Acinetobacter abundance was drastically increased through onion and #Pumpkin by fourfold and 2.1-fold respectively.
- - #Enterobacter abundance was significantly decreased by the addition of #Ginger, onion, and #Pumpkin. - #Bacteroides was significantly decreased by the addition of #Pumpkin.
- - #Bifidobacterium abundance was decreased by the supplementation of onion and #Pumpkin by 0.3-fold.
- - #Breast cancer risk was increased by the addition of #Garlic, #Bellflower root, and onion
- Foods that pack the greatest prebiotic punch are dandelion greens, Jerusalem #Artichokes, #Garlic, #Leeks, and onions. - Dandelion greens, Jerusalem artichoke, #Garlic, #Leeks, and onions had the greatest amounts, ranging from about 100–240 milligrams of prebiotics per gram of food (mg/g). - Other prebiotic rich foods included onion rings, creamed onions, cowpeas, asparagus, and Kellogg’s All-Bran cereal, each containing around 50–60 mg/g
- - onions and related foods contain multiple forms of prebiotics, leading to a larger total prebiotic content. - a person would need to consume approximately half of a small (4-ounce) onion to get 5 grams of prebiotics.
- [1.4] [#Beetroot]
- Food sources that contain #Inulin include wheat, bananas, #Garlic, onion, agave and chicory root.