Quercetin

Quercetin is a natural flavonoid widely found in plants and has multiple biological activities. Quercetin is mainly extracted from foods such as onions, apples, green tea, grapes, berries, citrus, etc., and is widely used in the food, health care products and pharmaceutical industries.

1. Chemical properties

· Molecular formula: C15H10O7

· Molecular weight: 302.24 g/mol

· Appearance: Usually a light yellow to yellow crystalline powder, with low solubility in water, but soluble in organic solvents.

2. Main sources

· Quercetin is found in many plants, especially onions, apples, grapes, berries, green tea and certain nuts.

3. Biological activity

Quercetin is valued for its multiple biological activities, including:

· Antioxidant effect: scavenges free radicals and reduces oxidative stress.

· Anti-inflammatory effect: inhibits the production of inflammatory mediators and reduces inflammatory responses.

· Immunomodulation: Enhances the body's immunity and helps fight infection.

· Cardiovascular protection: Improves vascular function, lowers blood pressure, and reduces the risk of cardiovascular disease.

· Anti-allergic effect: Can inhibit histamine release and relieve allergic symptoms.

4. Application areas

· Health products: Quercetin is widely added to health products to improve immune function, anti-aging and protect cardiovascular health.

· Food additives: Due to its antioxidant properties, quercetin can be used as a food preservative and additive to extend the shelf life of food.

· Pharmaceutical industry: The biological activity of quercetin makes it a potential ingredient for researching new drugs, especially in anti-inflammatory, anti-cancer and cardiovascular disease treatment.

5. Dosage and use

· The recommended dose of quercetin is usually 500 mg to 1000 mg/day, and the specific use should be adjusted according to the product instructions or professional advice.

6. Storage conditions

· It should be stored in a cool, dry and light-proof environment to ensure the stability of its active ingredients.

As a natural plant extract, quercetin has attracted attention for its multiple health benefits and is suitable for daily health care and auxiliary treatment. Professional advice should be followed when using it to achieve the best results.