| Description | y-Octalactone has a strong, fruity odor reminiscent of coconut witha very sweet taste. This substance may be prepared syntheticallyfrom epoxy-1,2-hexane and sodio-malonic ester; after saponificationthe oxyacid is extracted with ether and is lactonized. |
| Chemical Properties | γ-Octalactone has a fruity odor reminiscent of coconut and a very sweet taste. |
| Chemical Properties | CLEAR COLOURLESS LIQUID |
| Chemical Properties | gamma-Octanoic lactone occurs as anaroma constituent in many processed and unprocessed foods. It is a pale yellowliquid with a fruity/coconut-like odor and is used both in aroma compositions andin heavy blossom perfumes. |
| Occurrence | Reported found in apricot, peach, blue cheese, butter, cooked chicken and cooked pork, licorice, milk, raspberry,roasted barley, and roasted filbert. |
| Uses | 4-Octanolide is one of the fine organic aerosol emitted from meat cooking operations that was examined by high-resolution gas chromatography. |
| Uses | (Gamma)-Octalactone is a synthetic flavoring agent that is a stable, colorless to slightly yellow liquid of peach odor. It should be stored in glass or tin containers. It is used in flavors for peach with applications in baked goods, candy, and ice cream at 5–17 ppm. |
| Definition | ChEBI: Gamma-octalactone is a gamma-lactone that is oxolan-2-one substituted by a butyl group at position 5. It is a volatile compound found in peaches, mangoes, beef and ham. It has a role as a fungal metabolite, a mouse metabolite, a mammalian metabolite, an insect attractant, a plant metabolite and a flavouring agent. It is a gamma-lactone, a tetrahydrofuranone and a volatile organic compound. |
| Aroma threshold values | Detection: 7 ppb; aroma characteristics at 1.0%: sweet, fatty, creamy, coconut, lactonic and coumarinic. |
| Taste threshold values | Taste characteristics at 1 to 10 ppm: coconut, fatty, creamy, coumarinic, with a strong creamy and waxymouthfeel. |
| Synthesis Reference(s) | Chemistry Letters, 23, p. 53, 1994
The Journal of Organic Chemistry, 52, p. 4319, 1987 DOI: 10.1021/jo00228a032
Tetrahedron Letters, 19, p. 419, 1978 DOI: 10.1016/S0040-4039(01)91443-1 |
| General Description | γ--Octalactone is one of the flavor constituents of peaches, oranges and sweet fortified wines. |
| Flammability and Explosibility | Not classified |
| Safety Profile | Mildly toxic byingestion. A skin irritant. When heated todecomposition it emits acrid smoke andirritating fumes. |
| Synthesis | Prepared synthetically from epoxy-1,2-hexane and sodio-malonic ester; after saponification, the oxyacid is extracted withether and is lactonized. |
