Unlock the True Potential of Vitamin C with SRBio AA2G

SRBio Ascorbic Acid 2-Glucoside (AA2G) represents a breakthrough in vitamin C technology. By enzymatically binding a glucose molecule to ascorbic acid, we have created a highly stable derivative that retains the full bioactivity of vitamin C. Unlike conventional L-ascorbic acid, which degrades rapidly in water and light, AA2G remains intact during formulation and storage, releasing its active form only upon enzymatic cleavage in the skin or body. This ensures targeted delivery, prolonged efficacy, and superior formulation flexibility for brands seeking visible, long-lasting results.

Uncompromising Quality: SRBio’s Manufacturing Excellence

1. Precision Purity Control

   • HPLC-UV/Polarimetry Dual Verification: Purity is stringently controlled to ≥98.0% (HPLC). Specific optical rotation is verified to ensure correct stereochemistry of the glucosidic bond.

   • Heavy Metal Screening: ICP-MS analysis confirms conformity with global cosmetic and food regulations: Lead (Pb) < 0.5 ppm, Arsenic (As) < 0.2 ppm, Mercury (Hg) < 0.1 ppm, Cadmium (Cd) < 0.1 ppm.

   • Residual Solvents & By-Products: GC-FID analysis verifies absence of residual organic solvents. Free ascorbic acid and glucose content are monitored and controlled to <0.5%.

2. Advanced Enzymatic Synthesis Technology

   • Proprietary Biocatalysis Process: Utilizes a highly specific immobilized enzyme (cyclodextrin glucanotransferase, CGTase) from Bacillus licheniformis (Patent No. CN1XXXXXX). This enzyme exclusively transfers a glucose unit to the C2 position of ascorbic acid, ensuring regioselectivity and minimizing isomers.

   • Membrane Purification & Crystallization:

     1. Micro/Ultrafiltration: Removes enzymes and high molecular weight proteins.

     2. Ion Exchange Chromatography: Purifies the AA2G from unreacted glucose and ascorbic acid.

     3. Low-Temperature Crystallization: Controlled cooling crystallization yields a fine, white, crystalline powder with high purity and excellent flow properties.

   • Eco-Impact: Water-based enzymatic process eliminates the need for hazardous chemical protecting groups and organic solvents, reducing waste by over 90% compared to traditional chemical synthesis.

3. Stability & Shelf-Life Superiority

   • Superior Solution Stability: In aqueous solution (pH 5.0, 40°C), SRBio AA2G retains >95% of its initial concentration after 3 months, whereas standard L-ascorbic acid degrades completely within 2 weeks.

   • Accelerated Stability Data: As a pure powder, it retains ≥99% potency after 36 months at 25°C/60% RH in nitrogen-flushed, light-protected packaging (ICH Q1A tested).

   • Formulation Stability: Demonstrated compatibility in challenging matrices including water-based serums, emulsions with metal ions, and products containing niacinamide or peptides.

Scientific Evidence: Mechanism & Efficacy

1. Stabilized Delivery, Proven Bio-Activation

   • Enzymatic Release Mechanism: AA2G is a pro-drug of vitamin C. It penetrates the stratum corneum intact and is hydrolyzed by cellular α-glucosidases to release free L-ascorbic acid and glucose, providing a sustained supply of active vitamin C to living skin cells.

   • Bioavailability Study: Human skin permeation studies show that AA2G delivers a steady stream of L-ascorbic acid over 24 hours, leading to 3x higher intracellular vitamin C levels in the epidermis compared to a single application of L-ascorbic acid.

2. Potent Inhibition of Melanogenesis

   • Tyrosinase Suppression: The released ascorbic acid directly reduces ortho-quinones and inhibits tyrosinase activity at the DOPAchrome stage.

   • Clinical Outcomes (Human Patch Test): In an 8-week clinical study (n=25 with UV-induced hyperpigmentation):

     • 38% reduction in melanin index (measured by Mexameter) with a 2% AA2G cream.

     • 45% improvement in skin lightness (L* value) and significant fading of dark spots observed in 80% of subjects.

3. Superior Collagen Synthesis & Antioxidant Protection

   • Fibroblast Stimulation: In vitro studies demonstrate that AA2G (at 100 µM) stimulates procollagen Type I synthesis in human dermal fibroblasts by up to 60%, comparable to an equivalent dose of L-ascorbic acid.

   • Radical Scavenging: Effectively neutralizes superoxide anion and hydroxyl radicals, protecting skin cells from UV-induced oxidative stress and lipid peroxidation. Proven to reduce the formation of sunburn cells in ex vivo skin models.

Formulation-Ready Advantages

Application-Specific Benefits:

• Anti-Aging Serums & Creams: Easily formulated into water phase at pH 4.5-6.0. Pairs perfectly with hyaluronic acid, peptides, and ceramides without the risk of oxidation or browning.

• Brightening Lotions & Toners: Provides stable, effective brightening action without the stinging or irritation often associated with L-ascorbic acid. Ideal for sensitive skin formulations.

• Sunscreens & After-Sun Care: Adds a layer of photoprotection and aids in repairing UV-induced damage.

• Functional Foods & Beverages: Stable in pasteurized and acidic beverages (e.g., juices, functional waters). Can be used to fortify foods without causing off-flavors or discoloration. Usage levels typically 50-500 mg per serving.

• Animal Nutrition: Enhances immune response and acts as a potent antioxidant in feed for poultry, swine, and aquaculture. Stable during feed pelleting and extrusion processes.

Supply Chain & Compliance Leadership

1. Audited Transparency

   • Full Traceability: Certificate of Analysis (COA) includes detailed impurity profile, residual protein tests, heavy metal analysis, and microbiological data (TPC, yeast & mold).

   • Batch Consistency: All production across our ISO 9001 (Quality Management) and ISO 22000 (Food Safety) certified facilities ensures global-standard quality.

2. Regulatory Preparedness

   • Global Dossiers: We provide comprehensive Technical Data Sheets (TDS), Material Safety Data Sheets (MSDS), Allergen Statements, and GMP compliance documents.

   • Cosmetic Compliance: Full documentation available to support safety assessments under EU Cosmetic Regulation (EC) No 1223/2009 and FDA guidelines.

   • Food Grade Options: Available with certifications for use as a food additive/nutrition enhancer in various regions (subject to local regulations).

3. Ethical & Safety Certifications

   • Vegan Society Verified: No animal-derived inputs in the enzymatic fermentation or purification process.

   • Allergen-Free: Validated free from the major declared allergens (gluten, soy, dairy, nuts).

   • Non-GMO: Production organism (Bacillus licheniformis) is non-GMO and processes are controlled to prevent cross-contamination.

Competitive Breakdown: SRBio vs. Market Alternatives

Common Deficiencies in Standard/Other AA2G:

• Isomeric Impurities: Chemically synthesized versions may contain 1-O- or 6-O-glucosidic isomers with lower bioactivity or stability.

• Residual Solvents: Chemical synthesis routes can leave traces of pyridine or other toxic solvents.

• Yellowing in Formulation: Lower purity grades can cause unacceptable yellowing or browning of cosmetic creams over time.

• Inconsistent Purity: Wide purity ranges (90-98%) lead to unpredictable formulation behavior and efficacy.

SRBio’s Enzymatic Advantage:

• Regioselective Purity (>99% 2-O-isomer): Our enzymatic process ensures the glucose is attached exclusively to the desired C2 position, guaranteeing maximum stability and biological activity.

• Exceptional Color Stability: High purity and absence of reducing sugars ensure water-white solutions and color-stable creams, protecting the premium aesthetic of your products.

• Heavy Metal-Free Catalyst: Unlike chemical catalysts, our biocatalyst introduces no heavy metals, ensuring the purest final product.

Technical Partnership Program for Brands

1. Co-Development Services

   • Formulation Stability Testing: ICH-compliant stability studies for your specific prototype (e.g., vitamin C + retinol serum). We assess potency retention, color change, and preservative efficacy over time.

   • Efficacy Validation: Access to in vitro antioxidant assays (DPPH, ORAC), collagen synthesis stimulation tests, or tyrosinase inhibition assays to support your product claims.

2. Market-Ready Solutions

   • Custom Pre-Blends:

     • C-Glow™ Stabilized Complex: AA2G + Ferulic Acid + Vitamin E (for enhanced photoprotection and antioxidant synergy).

     • Bright-Age™ Synergy: AA2G + Niacinamide + Tranexamic Acid (comprehensive anti-pigment and anti-aging complex).

   • Turnkey Sampling: Receive 100g/500g trial samples with full COA and MSDS for R&D validation, typically shipped within 48-72 hours.

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We make product proposals based on the customer’s requirements, from small to large lots.

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