Arbutin: The Gold Standard for Safe Skin Brightening & Antioxidant Defense
1. What is Arbutin?
Arbutin (CAS 497-76-7) is a naturally occurring β-D-glucopyranoside derivative of hydroquinone, renowned for its potent tyrosinase-inhibiting properties. As the premier non-irritating alternative to hydroquinone, it effectively disrupts melanin synthesis through competitive enzyme inhibition without cytotoxic effects. Available as alpha-arbutin (synthetic) and beta-arbutin (plant-derived), the alpha form exhibits superior stability and efficacy at lower concentrations.
2. المصدر والخصائص الكيميائية والتعريف
المصادر الطبيعية:
أساسي: Bearberry leaves (Arctostaphylos uva-ursi), Bergenia crassifolia, Pyrus communis (pear) leaves
Secondary: Wheat germ, blueberry shoots
Synthesis: Enzymatic glycosylation of hydroquinone via Aspergillus oryzae β-glucosidase
Chemical Specifications:
المعلمة قيمة رقم CAS 497-76-7 (β-Arbutin) 84380-01-8 (α-Arbutin) الصيغة الجزيئية C₁₂H₁₆O₇ الوزن الجزيئي 272.25 g/mol إينكس 207-850-3 مظهر White crystalline powder الذوبانية Water: 50g/100mL (20°C) استقرار pH 3-7; decomposes at >100°C
3. Premium Product Selection & Health Applications
► Optimal Product Specifications
Highest Potency: Alpha-arbutin >99% (HPLC) outperforms beta-arbutin with 10x greater tyrosinase affinity
Purity Standards: Heavy metals (Pb <1 ppm), residual solvents (methanol <50 ppm), microbial limits (TAMC <100 CFU/g)
► Clinically Validated Benefits:
Skin Depigmentation:
Inhibits tyrosinase (IC₅₀: 24 μM) by binding copper active site
Reduces UV-induced melanin by 45.8% at 0.5% concentration (vs. 35.2% for β-arbutin)
الحماية المضادة للأكسدة:
Scavenges ROS (IC₅₀: 0.13 mM) and prevents lipid peroxidation
Antibacterial Action:
Effective against Propionibacterium acnes (MIC: 1.25 mg/mL)
► Dosage & Safety Profile:
طلب | Concentration | Frequency |
---|---|---|
مستحضرات التجميل | 0.5-2% | Daily application |
المكملات الغذائية | 50-200 mg/day | Oral, divided doses |
Critical Notes: |
تأثيرات جانبية: <0.1% incidence of contact dermatitis (patch test recommended)
موانع الاستعمال: Pregnancy (limited data), hydroquinone sensitivity
استقرار: Formulate at pH 5.5-6.5; avoid ascorbic acid/retinol combinations
4. Shaanxi Zhonghong Biotech: Arbutin Innovation Leader
خبرة 28 عامًا in botanical actives positions Shaanxi Zhonghong Investment Technology Co., Ltd. as the global partner for premium arbutin:
► القدرات الأساسية:
Extraction Mastery:
CO₂ supercritical extraction (40°C, 250 bar) preserves thermolabile compounds
Nanofiltration technology achieves >99.5% α-arbutin purity
Analytical Infrastructure:
Chiral HPLC-ELSD for α/β-arbutin isomer quantification
ICP-MS heavy metal detection at ppb-level sensitivity
Innovation Ecosystem:
Patent CN114716386A: Enzymatic synthesis of high-stability α-arbutin
University partnerships developing arbutin-peptide conjugates for enhanced dermal delivery
5. Rigorous Quality Specifications
فئة | المعلمة | مواصفة | طريقة الاختبار |
---|---|---|---|
المبيدات الحشرية | الكلوربيريفوس | ≤0.01 mg/kg | كروماتوغرافيا الغاز-مطياف الكتلة/مطياف الكتلة |
سايبرمثرين | ≤0.05 mg/kg | كروماتوغرافيا الغاز-مطياف الكتلة/مطياف الكتلة | |
المعادن الثقيلة | الرصاص (Pb) | ≤1.0 mg/kg | ICP-MS |
الزئبق (Hg) | ≤0.1 ملغ/كغ | CV-AAS | |
علم الأحياء الدقيقة | إجمالي عدد التمارين الهوائية | ≤100 وحدة تشكيل مستعمرة/جم | ISO 4833-1 |
Candida albicans | غائب في 1 جرام | ISO 18416 | |
المكورات العنقودية الذهبية | غائب في 1 جرام | ISO 22718 | |
Key Analytics | α-Arbutin Assay | ≥99.0% | HPLC-ELSD |
β-Arbutin Impurity | ≤0.5% | كروماتوغرافيا السائل عالي الأداء (HPLC) | |
Hydroquinone | ≤1 ppm | HPLC-DAD |
6. سير عمل الإنتاج المتقدم
Biomass Processing: Cryogenic milling of Arctostaphylos uva-ursi leaves (-196°C)
الاستخراج الانتقائي: Ethanol-water (70:30) at 50°C, pH 4.5
Enzymatic Conversion: β-Glucosidase treatment (40°C, 24h) for α-arbutin isomerization
طهارة:
Macroporous resin chromatography (AB-8 resin)
Recrystallization from acetone/water (3:1)
التجميد بالتجميد: -50°C vacuum drying for crystal structure preservation
7. Cutting-Edge Applications & Research
► التطبيقات التجارية:
مستحضرات التجميل: Brightening serums (2% α-arbutin + 5% niacinamide), acne spot treatments
Medical Dermatology: Melasma therapy (combined with 1064nm Q-switched Nd:YAG laser)
الأغذية الوظيفية: Antioxidant capsules (100mg arbutin + selenium)
► Innovation Frontiers:
Transdermal Delivery:
Ethosomal carriers (entrapment efficiency: 92.3%) enhance stratum corneum penetration
Multi-Target Inhibitors:
Arbutin-kojic acid hybrids show synergistic tyrosinase inhibition (IC₅₀: 3.7 μM)
الإنتاج المستدام:
CRISPR-edited الإشريكية القولونية strains producing arbutin from glycerol (yield: 28.7 g/L)
Current Challenges:
Regulatory divergence (Japan: quasi-drug vs. EU: cosmetic ingredient)
Stability in O/W emulsions (>40°C)
8. Essential FAQs
Q: Does arbutin cause skin photosensitivity?
A: No – unlike hydroquinone, arbutin does not increase UV sensitivity and provides intrinsic photoprotection.
Q: What concentration is optimal for hyperpigmentation?
A: Clinical studies show 2% α-arbutin reduces melanin index by 22.3% after 8 weeks (vs. 16.7% for 7% β-arbutin).
Q: Is plant-derived arbutin superior to synthetic?
A: Synthetic α-arbutin delivers higher purity (>99.5%), batch consistency, and efficacy at lower doses.
Q: Can arbutin be used with vitamin C?
A: Formulate at pH 5.5-6.0; avoid direct combination with L-ascorbic acid (stability issues).
9. Global Supply Information
Contact Shaanxi Zhonghong for Pharmaceutical-Grade Arbutin:
بريد إلكتروني: liaodaohai@gmail.com
موقع إلكتروني: https://www.aiherba.com
التعبئة والتغليف: Nitrogen-flushed amber glass vials (1-5kg) or HDPE drums (25kg)
تخزين: 2-8°C; 24-month stability
Logistics: Global cold-chain shipping (2-8°C) with IATA-compliant documentation
10. Conclusion
Arbutin remains the gold-standard melanogenesis inhibitor for ethical skin brightening formulations. شركة شنشي تشونغهونغ للاستثمار والتكنولوجيا المحدودة الروافع المالية proprietary enzymatic bioconversion technology, cGMP-compliant nanofiltration، و chiral separation expertise to deliver >99% pure α-arbutin – outperforming conventional extracts in efficacy and safety. With أكثر من 20 براءة اختراع in active delivery systems and ISO 22716 cosmetic GMP certification, we empower brands to develop clinically effective, regulatory-compliant depigmenting solutions. Partner with us to formulate the next generation of evidence-based skin therapies.
مراجع
Zhu, W. et al. (2021). α-Arbutin: Advanced Production Strategies & Clinical Efficacy. J. Cosmet. Dermatol. 20(7):2145-2156.
EU SCCS Opinion on Alpha-Arbutin (SCCS/1642/22).
Chen, L. et al. (2023). CRISPR-based Metabolic Engineering for Arbutin Biosynthesis. Metab. Eng. 76:146-158.
JECFA Specifications for Arbutin (JECFA/89/SC).
Shaanxi Zhonghong Patent CN114716386A: Method for High-Yield α-Arbutin Production.
ICH Guidelines: Q3C (Residual Solvents), Q3D (Elemental Impurities).
المراجعات
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