98% ケルセチン粉末

ケルセチン is a common plant secondary metabolite, chemically named 3,3′,4′,5,7-pentahydroxyflavone. It typically appears as a 黄色結晶性粉末 that is practically insoluble in water at room temperature, but soluble in organic solvents such as ethanol and dimethyl sulfoxide (DMSO). Quercetin exhibits strong antioxidant activity, capable of stabilizing free radicals and protecting cells from oxidative damage.

Quercetin can be obtained either through extraction from plant sources or via synthetic methods. The most common method involves extraction from plants using hot ethanol, solvent extractionあるいは liquid–liquid partitioning techniques. Among plant sources, the bark of the Chinese parasol tree (Firmiana simplex) is frequently used, though quercetin can also be extracted from many fruits, vegetables, and medicinal herbs, including onions, apples, tea leaves, and Ginkgo biloba.

In addition to extraction, quercetin can also be chemically synthesized または biosynthesized using engineered microbial systems—approaches that are increasingly studied for scalable production.

Quercetin is generally considered a safe compound with low toxicity. However, excessive intake may lead to side effects such as gastrointestinal discomfort, nauseaそして vomiting. Pregnant and breastfeeding women are advised to use quercetin with caution, and ideally under medical supervision.

Due to its anti-inflammatory, antiviral, anticancer, and cardiovascular protective properties, quercetin is widely studied in pharmacology and nutrition science, and is increasingly incorporated into dietary supplements, cosmetics, and functional foods.

• 製品名: Quercetin
• ソース: Sophora Japonica Extract
• CAS番号: 117-39-5
• 外観: Yellow Green Powder
• 純度: 95%, 98%
• 同義語: Sophoretin, Quercetol, Natural Flavonol, Bioflavonoid Extract
• COA： Quercetin Powder COA

Highly bioactive and plant-based, Quercetin is known for free radical scavenging, histamine regulationそして immune response support, making it a top choice for both preventive and therapeutic health formulations.

技術仕様

主な特徴

• Plant-derived quercetin flavonoid
• 95%–98% purity guaranteed by HPLC testing
• Natural antioxidant, anti-inflammatoryそして antiviral サポート
• 以下の用途に最適。 capsules, tablets, beverages, and skincare
• Clean-label, non-GMO, gluten-free, and vegan-friendly
• Available in bulk with consistent quality

品質とコンプライアンス

Manufactured under GMP準拠 conditions with strict quality assurance:

• In-house and third-party testing
• Analytical control using HPLC, UVそして microbiology screening
• Fully traceable raw material sourcing from Sophora japonica
• Meets international standards:
  • USP, EP, CP
  • コーシャ, ハラール, USDAオーガニック, EUオーガニック, ISO22000, ハサップ
• COA, MSDS, and TDS バッチごとに提供

アプリケーション

Primary Uses

• サプリメント (capsules, softgels, powders)
• Immune Health and Allergy Formulas
• 機能性食品と飲料
• Cosmetic Antioxidant Additive
• Sports Nutrition and Recovery Blends

Specific Formulation Ideas

• Immune defense capsules (with Zinc and Vitamin C)
• Antioxidant tea powders and beverages
• Skin brightening creams or anti-aging serums
• Anti-allergy and antihistamine oral formulas

推奨用量

• Oral: 250–1000 mg/day (depending on formulation)
• Topical: 0.1%–1% in skincare preparations

成分適合性

• ビタミンC
• Zinc
• Bromelain
• レスベラトロール
• Curcumin

サービス

• MOQ:1kg
• パッケージング:
  • 1kg/袋・カートン
  • 25kg/ドラム/カートン
  • OEM/private label support available
• リードタイム:在庫のある商品については5-7営業日
• 送料:航空便、船便、エクスプレス便によるグローバル配送
• Customization: Purity levels, granule size, and solubility tailored to client needs
• サポート: Full regulatory and technical documentation provided

企業資格

西安ベストバイオ技術有限公司 specializes in the research, development, and export of natural plant extracts. Our state-of-the-art facility in 中国、ヤンリン, is GMP-compliant and serves clients in over 60カ国.

• Equipped with multiple automated production lines
• Advanced QC lab with HPLC/UV/GC/MS instrumentation
• 公認だ： USFDA, ISO9001, ハラール, コーシャ, EU/USDAオーガニック
• Extensive experience in OEM/ODM solutions

よくある質問（FAQ）

1. What is Quercetin used for?

Quercetin is used for immune support, allergy relief, antioxidant supplementationそして アンチエイジング skincare.

2. Is it safe and natural?

Yes — it’s a plant-based bioflavonoid derived from Sophora japonica, with a long history of safe use.

3. How is it tested?

Each batch is HPLC-verified for purity and tested for contaminants, heavy metals, and microbes.

4. Can I get custom specifications?

Yes — we offer OEM/ODM support, custom packaging, and purity options.

5. Do you provide documentation?

はい COA, MSDS, TDS, and third-party lab results are available.