Product Description

1. Product Introduction

Our Quercetin Extract is a high-quality plant extract refined from premium natural plant materials including pagoda tree flower buds and onions. It is rich in high-purity quercetin, natural flavonoids, polyphenols and other beneficial active ingredients. Featuring outstanding antioxidant repair, anti-inflammatory soothing, physical conditioning and natural health-preserving properties, it is widely used in cosmetics, personal care, food, beverage, dietary supplements and other fields, and has gained wide recognition across the market.

2. Active Ingredients

High-Purity Quercetin

The main active ingredient of quercetin extract is natural high-purity quercetin flavonoid compound. Well-known for powerful antioxidant, brightening & repairing, anti-inflammatory soothing and body function strengthening effects, it is the core component responsible for the efficacy of this extract.

Quercetin is a key natural active ingredient widely studied in the industry. Researches show that it can effectively neutralize free radicals in the human body and on the skin surface. Free radicals are the leading cause of skin oxidative dullness, fine lines, bodily aging and sub-health conditions, so this ingredient can effectively alleviate various problems caused by oxidative damage.

Natural Flavonoids and Polyphenols

Quercetin extract also contains abundant natural flavonoids and polyphenols, with a mild and natural plant aroma. These ingredients not only bring a pure natural plant-derived texture to the product, but also deliver excellent effects of metabolism regulation, mild nourishment and soothing stabilization. They gently care for the skin and body and bring multiple maintenance benefits.

3. Appearance and Properties

Color

Conventional-grade quercetin extract ranges from yellowish green to brownish yellow; high-purity grade is light yellowish green, and high-precision grade is pale yellow or off-white, free of impurities and agglomeration.

Form

We supply fine powder and concentrated liquid extract for options. The fine powder has fine texture and is easy to formulate, ideal for producing dietary supplements, solid functional foods and skincare powder materials. The liquid extract boasts higher concentration and fully retained activity, which is more suitable for deep processing scenarios requiring high concentration and high permeability.

Solubility

Conventional quercetin extract powder has moderate water solubility, and performs better in dispersion and dissolution in alcohol-based and oil-based systems. With advanced extraction and modification technology, water-soluble quercetin extract has achieved stable mass production. It is compatible with various water-based production systems to meet the diversified application demands of different industries.

4. Health Benefits

Antioxidant Protection

As mentioned above, quercetin, flavonoids and polyphenols in the extract possess strong antioxidant capacity. They can effectively eliminate free radicals inside the body and on the skin, protect cells from oxidative damage and slow down the aging process of the body and skin. They also reduce the risks of skin dullness, sagging and physical sub-health problems.

Anti-inflammatory and Soothing Properties

Multiple studies have proven that quercetin extract has remarkable anti-inflammatory and soothing effects. It can relieve superficial skin inflammation, redness and sensitivity, and assist in regulating mild internal inflammation. It works well for skin stabilization, skin condition improvement and the regulation of inflammatory metabolism in the body.

Body Metabolism and Physical & Mental Conditioning

The natural active ingredients in raw materials exert positive regulating effects on human metabolism and physical and mental state. They help regulate body circulation, relieve physical and mental fatigue and improve listlessness, keeping bodily functions stable and alleviating sub-health issues caused by overwork and metabolic disorders.

Metabolic Maintenance and Health Care

Flavonoids and polyphenols in quercetin extract can mildly regulate metabolism and balance body circulation to keep metabolism unobstructed. They relieve bloating and fatigue resulted from slow metabolism and poor circulation, realizing mild whole-body conditioning and health maintenance.

5. Applications

Dietary Supplements

As a premium natural raw material for dietary supplements, quercetin extract can be made into capsules, tablets, solid powders, oral liquids and other dietary products, providing consumers with a convenient way for antioxidant care, metabolic regulation and daily physical and mental maintenance.

Food and Beverage Industry

In the food and beverage industry, quercetin extract can be used as a natural functional additive, antioxidant and flavoring agent. It can be added to functional drinks, nutritional snacks and baked goods to enhance the nutritional value, antioxidant capacity and natural plant flavor of products.

Cosmetics and Personal Care Products

Thanks to its excellent antioxidant, anti-inflammatory and soothing repair properties, quercetin extract is widely applied in cosmetics and personal care products. It can be added to toners, face creams, essences, lotions and washing & care products to defend against skin oxidative dullness, soothe redness and sensitivity, repair damaged skin, and maintain delicate and stable skin condition in the long run.

6. Quality Assurance

Raw Material Procurement

All our raw materials are sourced from reliable suppliers in compliance with Good Agricultural Practices. Raw materials undergo strict manual and mechanical double screening. Only high-quality plant materials without mildew and insect pests are selected to ensure superior raw materials, stable ingredients and consistent quality from the source.

Extraction Technology

Our extraction process has been optimized and upgraded for multiple times, which can maximally extract core active ingredients including quercetin, flavonoids and polyphenols, while completely retaining their molecular structure and biological activity to avoid activity loss. Advanced technologies such as supercritical fluid extraction, low-temperature solvent extraction and spray drying are flexibly adopted according to different product grades to guarantee purity and quality.

Testing and Analysis

Each batch of quercetin extract is subject to strict tests on active ingredient content, purity and overall quality. High Performance Liquid Chromatography (HPLC) is used to accurately determine the content of core components such as quercetin, flavonoids and polyphenols to meet standards. Meanwhile, rigorous tests on microorganisms, heavy metals and impurities are conducted to eliminate harmful contaminants and ensure product safety and compliance.

7. Packaging and Storage

Packaging

Quercetin extract is packed in high-quality sealed containers to effectively isolate light, moisture and oxygen and prevent the deactivation of active ingredients caused by oxidation. Powder products are normally packed in food-grade multi-layer composite bags and moisture-proof cardboard drums. Liquid extract is stored in light-proof glass bottles and various eco-friendly sealed containers to guarantee quality during transportation and storage.

Storage Conditions

It is recommended to store quercetin extract in a cool, dry, ventilated and dark place away from direct sunlight. Low-temperature refrigeration at 2°C to 8°C is suggested to fully preserve product activity and ensure long-term stable quality and efficacy.

As a professional manufacturer of SD green plant extracts, we are committed to supplying high-quality quercetin extract that meets the highest industry standards. Whether you are engaged in dietary supplement, food & beverage or cosmetics industry, our quercetin extract will be a valuable raw material to enrich your product lines and enhance core product value.