What is Alpha-bisabolol?
Alpha-bisabolol (CAS Number 515-69-5) is a sesquiterpene alcohol, a type of organic compound naturally present in essential oils of chamomile (Matricaria chamomilla), candeia wood (Eremanthus erythropappus), and other botanical sources. The compound exists as a colorless to pale yellow liquid with a characteristic warm, woody aroma. Due to its natural occurrence and aromatic properties, alpha-bisabolol has been isolated and utilized in the flavor and fragrance industry for decades.
Common Uses
Alpha-bisabolol functions primarily as a flavoring agent and flavoring adjuvant in the food and beverage industry. It is incorporated into products including alcoholic beverages, non-alcoholic drinks, baked goods, confectionery, dairy products, and processed foods to enhance or modify flavor profiles. The compound typically contributes woody, herbal, and slightly sweet notes to formulations. Due to its natural origin, it is sometimes marketed as a "natural flavor" component, though synthetic versions are also produced for industrial use.
Safety Assessment
Alpha-bisabolol has not been designated as Generally Recognized as Safe (GRAS) by the FDA. However, the absence of GRAS status does not indicate a safety concern; rather, it reflects that the compound has not undergone formal GRAS petition review or notification processes with the FDA. The compound has generated zero adverse event reports in FDA databases and has not been associated with any product recalls, indicating no documented consumer safety incidents in the United States food supply.
The European Food Safety Authority (EFSA) has evaluated alpha-bisabolol as a flavoring substance. In the EU, alpha-bisabolol is listed in the Register of flavoring substances as a naturally occurring flavoring material. Its inclusion in EU flavor regulations suggests it has been deemed acceptable for use within specified parameters, though specific usage levels and food categories may apply.
Toxicological studies on alpha-bisabolol are limited in the published scientific literature compared to more widely-used food additives. The compound's structural similarity to other naturally occurring sesquiterpenes that have established safety profiles provides some reassurance, though direct human safety data specific to food use remains sparse. No significant acute or chronic toxicity concerns have been identified in available scientific literature.
Regulatory Status
In the United States, alpha-bisabolol is not FDA-approved under a GRAS determination, meaning products containing it may require FDA authorization or must comply with pre-market approval pathways. Food manufacturers using this ingredient should verify current regulatory requirements, as standards may vary by jurisdiction and product category.
In the European Union, alpha-bisabolol is recognized and regulated as a flavoring substance under Regulation (EC) No 1334/2008. It appears in the Union list of flavoring substances and is permitted for use in food products subject to maximum use levels established by EFSA evaluations.
Other regulatory jurisdictions, including Canada, Japan, and Australia, maintain separate approval processes. Regulatory status varies internationally, and manufacturers must ensure compliance with local regulations in each market where products are distributed.
Key Studies
Scientific literature specifically examining alpha-bisabolol's safety in food applications is relatively limited compared to synthetic additives. Most available data derives from cosmetic and pharmaceutical research, where alpha-bisabolol has been studied for potential anti-inflammatory and wound-healing properties in topical applications. These non-food studies do not directly address food safety parameters including bioavailability, metabolism, and long-term exposure effects at typical food-use concentrations.
The EFSA's flavor evaluation program provides the most relevant regulatory assessment for food use. However, detailed safety monographs with specific reference dose or acceptable daily intake values are not widely published in open scientific literature for this compound.
Future research specifically addressing alpha-bisabolol's safety profile in food applications, including metabolism studies and long-term exposure assessments at levels typical in food products, would enhance the scientific evidence base for this flavoring agent.