What is 6-methyl-5-hepten-2-one?
6-methyl-5-hepten-2-one, also known as sulcatone, is an organic compound with the CAS number 110-93-0. It is a naturally occurring ketone found in various plants and essential oils, including citrus oils, mint, and certain spice extracts. The compound has a characteristic fruity, fresh, and slightly spicy aroma that makes it valuable in the flavor and fragrance industry. As a colorless to pale yellow liquid, it exists naturally in trace amounts in foods, though it can also be synthesized for commercial use.
Common Uses
6-methyl-5-hepten-2-one is primarily employed as a flavoring agent in food and beverage products. It is used in small concentrations to enhance and modify taste profiles in various applications including beverages, confectionery, baked goods, dairy products, and condiments. The compound contributes fruity and herbaceous notes that blend well with other flavoring components. Beyond food applications, it is also used in cosmetic and fragrance formulations due to its pleasant sensory properties.
Safety Assessment
The available safety data for 6-methyl-5-hepten-2-one shows no reported adverse events in the FDA database and no associated product recalls. Toxicological studies on this compound have been conducted to evaluate its safety profile. The compound appears to have low acute toxicity in standard testing models. Like many volatile organic compounds used in flavorings, it undergoes metabolic processes in the body and is generally considered to have low bioaccumulation potential.
The lack of reported adverse events and recalls suggests a favorable safety profile in current food applications. However, as with all chemical additives, consumption should remain within established safe use levels. Individuals with sensitivities to volatile organic compounds or specific flavor components should exercise appropriate caution.
Regulatory Status
6-methyl-5-hepten-2-one is not listed on the FDA's Generally Recognized as Safe (GRAS) list. This designation does not necessarily indicate safety concerns; rather, it reflects that the compound has not undergone the specific GRAS notification process or received formal GRAS affirmation from the FDA. The compound may still be used in food under FDA regulations if it meets other approval pathways or is considered a natural flavor component in trace amounts from natural sources.
In the European Union, the European Food Safety Authority (EFSA) maintains separate regulatory frameworks for flavoring substances. The regulatory approach to 6-methyl-5-hepten-2-one varies by jurisdiction based on intended use levels and food categories.
Manufacturers and importers using this substance must comply with labeling requirements and usage restrictions specific to their market. The compound is permitted in certain food categories in various countries, with typical use levels reflecting its role as a minor flavor component.
Key Studies
Toxicological assessments of 6-methyl-5-hepten-2-one have examined acute oral toxicity, skin irritation, and eye irritation potential. Standard laboratory studies indicate the compound poses minimal risk under normal exposure conditions associated with food use. Research on structurally similar flavor compounds and ketone-based flavorings provides supporting safety context, though compound-specific studies remain limited.
The natural occurrence of this compound in essential oils and plant extracts has been documented in scientific literature, supporting its long history of incidental dietary exposure. The levels used intentionally in modern food manufacturing are carefully controlled and represent a small fraction of total dietary exposure.