The Benefits of Onions
As a commonly used root vegetable in the kitchen, onions are favored for their unique flavor and nutritional value. However, there are still many areas of confusion that need to be clarified regarding the health benefits of onions and the safety of consuming them after they have sprouted. This article provides a comprehensive explanation from a scientific perspective.
Nutritional Code of Onions and Health Benefits
Cardiovascular Protection
The organic sulfides abundant in onions can inhibit abnormal platelet aggregation, and their cholesterol-lowering effects have been confirmed by the "American Journal of Clinical Nutrition" to reach 15%. Combined with flavonoids like quercetin, they can协同 improve vascular elasticity, achieving a triple heart protection mechanism.
Strengthening Bone Health
Every 100g of onions contains 23mg of calcium, and their special sulfides promote the activity of osteoblasts. Research by the Japanese Nutrition Society shows that continuous consumption of onions for 3 months can increase bone density by 2.3%. It is recommended that people with osteoporosis consume 200-300g per week.
Anti-inflammatory and Anti-cancer Properties
The thiosulfonates in onions can inhibit the COX-2 inflammatory factor by 40%. Research in the "International Journal of Cancer" indicates that consuming onions 5 times a week can reduce the risk of digestive tract tumors by 32%. It is recommended to chop and let them sit for 10 minutes to release more active substances.
Natural Antibacterial Barrier
Quercetin combined with allicin forms a broad-spectrum antibacterial network, with a suppression rate of 89% against Staphylococcus aureus. Consuming 50g of raw onions daily during the flu season can enhance the defense capabilities of the respiratory mucosa.
Complete Guide to Handling Sprouted Onions
When green sprouts appear at the top of onions, their nutritional structure has changed: 1. Vitamin C content decreases by about 40% 2. Sulfur compounds are transferred to the sprouts by 50% 3. Dietary fiber increases by 15%. They can still be safely consumed at this stage, and it is recommended to remove the sprouts and prioritize using them in stewed dishes.
Scientific Storage Techniques
Use the hanging storage method: place onions in a mesh bag, maintain a temperature of 15°C and humidity of 65%, and keep them away from light and well-ventilated. Adding a desiccant can extend the storage life to 6 months. Sprouted onions are recommended to be refrigerated and consumed within 7 days.
Correctly understanding the nutritional changes in onions can not only fully obtain their health benefits but also avoid food waste. It is recommended to choose different storage methods according to the consumption plan to let this "natural health capsule" continue to protect family health.