Ascorbyl Palmitate (AP), as an esterified
product of vitamin C and palmitic acid, demonstrates exceptional antioxidant
advantages due to its unique molecular structure:
1. Dual Antioxidant Mechanism – Its lipophilic palmitic acid group enables penetration into cell membranes and lipid environments, while the released ascorbic acid (VC) scavenges free radicals in hydrophilic phases, achieving cross-phase synergistic antioxidant effects;
2. High-Temperature Stability – Resists
decomposition at temperatures above 180°C (ordinary VC degrades at 70°C),
making it suitable for baked goods, fried foods, and high-temperature cosmetic
processing;
3. Long-Lasting Protection – Exhibits 1.5×
stronger antioxidant efficacy than BHT in lipid systems, with protection
duration extended by over 30% (as shown in lard oxidation experiments);
4. Safety & Non-Toxicity – Degrades into
metabolically harmless ascorbic acid and palmitic acid, certified by FDA GRAS
and free from toxic risks associated with synthetic antioxidants;
5. Skin Brightening Synergy – In cosmetics,
it not only combats oxidation but also inhibits tyrosinase activity to reduce
melanin deposition (clinical trials show 21% skin tone improvement within 28
days).
These properties position AP as an ideal
replacement for synthetic antioxidants (e.g., TBHQ) in food, pharmaceutical,
and cosmetic industries.