Extraction and Purification
Centrifuge culture to remove cells
Filter supernatant (0.45 μm)
Concentrate via rotary evaporation or membrane filtration
Purify Methods
- Ion exchange chromatography
- Reverse-phase HPLC
- Crystallization (from ethanol-water)
Arbutin is a naturally occurring skin-lightening agent found in various plant families, including marjoram, cranberry, blueberry, and several species of pear. It exists as two isoforms: α-arbutin (4-hydroxyphenyl-α-D-glucopyranoside) and β-arbutin (4-hydroxyphenyl-β-D-glucopyranoside). Although both forms share a similar core structure and mechanism of action, they have subtle differences. Generally, β-arbutin is extracted from the leaves of various plants and the peels of fruits. In contrast, α-arbutin does not occur naturally and is typically biosynthesized through microbial enzymes or microorganisms. Unlike β-arbutin, α-arbutin is resistant to light and heat, making it suitable for use both day and night. Additionally, α-arbutin is more structurally stable and less prone to degradation. In terms of potency, α-arbutin is approximately ten times more effective than β-arbutin in inhibiting melanogenesis, the process responsible for skin darkening. α-arbutin helps to even out skin tone, reduce age spots, diminish acne scars, and alleviate redness from blemishes. Additionally, it possesses antiseptic and anti-inflammatory properties. Due to these benefits, α-arbutin has become one of the most popular skin-lightening ingredients globally, with extensive applications in the cosmetics and pharmaceutical industries.
CHANDORKAR, NIKHIL, et al. "Alpha Arbutin as a Skin Lightening Agent: A Review." International Journal of Pharmaceutical Research (09752366) 13.2 (2021).
Cosmetic Grade α-Arbutin
Purity≥98% (HPLC)
Pharmaceutical Grade α-Arbutin
Purity≥99.5% (HPLC)
Research Grade α-Arbutin
Purity≥98% (HPLC)
α-Arbutin is widely utilized in both skincare and cosmetic products due to its various beneficial properties. It is primarily employed for its skin-lightening and brightening effects. It helps to reduce the appearance of hyperpigmentation, age spots, and melasma, promoting a more even skin tone. It is often incorporated into formulations to provide skin-enhancing benefits. By imparting a brightening effect, it helps to create a more luminous and youthful appearance. Additionally, the antioxidant properties of α-Arbutin make it useful in protecting the skin against free radicals and environmental damage, contributing to overall skin health.
| Property | Key Benefits | Product Type | Function | Typical Dosage | |
|---|---|---|---|---|---|
| Chemical Name | 4-Hydroxyphenyl α-D-glucopyranoside ( Cat #MCLX0092) | Reduces melanin synthesis | Whitening creams/serums | Reduces dark spots, evens tone | 0.2% – 2% |
| Molecular Formula | C₁₂H₁₆O₇ | Fades age spots, acne scars, melasma | Anti-pigmentation masks | Brightens dull skin, reduces hyperpigmentation | 1% – 2% |
| Molecular Weight | 272.25 g/mol | Even skin tone and improve radiance | Eye creams | Lightens under-eye dark circles | 0.5% – 1% |
| CAS Number | 84380-01-8 | Safe for all skin types, including sensitive skin | BB & CC creams | Enhances complexion luminosity | 0.2% – 0.5% |
| Characteristics | White crystalline powder, Water-soluble (up to 20 mg/mL at room temp), pKa: ~8.7 (phenol group), Stable in pH 4.5–6.5; heat-sensitive at pH >7 | Sunscreens | Prevents UV-induced dark spots | 0.5% – 1% | |
* Recombination Usage
Recommended concentration 0.2-2%, add to water phase of formula.
The Scientific Committee on Consumer Safety (SCCS) has suggested concentrations of α-arbutin i.e., up to 2% in face creams and up to 0.5% in body lotions for the safety of consumers that use α-arbutin based cosmetic products.
α-Arbutin is a synthetic substance that can be produced by enzymatic glycosylation of hydroquinone in the presence of α-amylase and dextrin. Producing α-arbutin via microbial fermentation is an efficient and eco-friendly alternative to chemical synthesis. The process relies on glucosyltransferases to attach glucose to hydroquinone (HQ), yielding α-arbutin with high regioselectivity and purity. It has been done in recombinant Escherichia coli, using amylase of Bacillus subtilis and sucrose phosphorylase of Leuconostoc mesenteroides.
| Commonly Used Strains | Capabilities | |
|---|---|---|
| Escherichia coli | Recombinant production of glucosyltransferase | Engineered for high expression |
| Bacillus subtilis | GRAS host for UDP-glucose-based production | High secretion potential |
| Xanthomonas campestris | Natural source of amylosucrase | Produces α-arbutin from sucrose & HQ |
| Corynebacterium glutamicum | Engineered platform strain | Good for large-scale bioproduction |
| Substrate | Function | Feeding Strategy |
|---|---|---|
| Hydroquinone (HQ) | Acceptor molecule | Typically 0.5–2 g/L; toxic above 3 g/L |
| Sucrose / Glucose | Sugar donor (UDP-glucose precursor) | Fed to maintain carbon flux |
| Uridine | Precursor for UDP-glucose | Used in some engineered strains |
Centrifuge culture to remove cells
Filter supernatant (0.45 μm)
Concentrate via rotary evaporation or membrane filtration
Purify Methods
Regioselectivity
>95% α-arbutin over β-form
High yield
Up to 90–95% conversion from HQ
Eco-friendly
No harsh chemicals or solvents
GRAS strains
Support regulatory acceptance in cosmetics
Our manufacturing process adheres to Good Manufacturing Practice (GMP) guidelines, ensuring the highest quality standards and consistency in every batch. Our state-of-the-art production facilities are certified to meet international standards, including ISO 9001, and we follow stringent procedures to prevent contamination and ensure batch-to-batch consistency.
Full Regulatory Compliance:
We comply with all relevant global regulatory requirements, including those set by the FDA, EMA, and other cosmetic regulatory bodies.
Quality Assurance:
Extensive quality control processes, including testing for purity, molecular weight distribution, and endotoxin levels, ensure that every batch of HA meets the highest standards for cosmetic use.
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