Synthetics
Levulinic acid has a sweet, caramel-like aroma with hints of fruitiness reminiscent of papaya, rice bran, and chinese quince.
Mosciano, Gerard P&F 14, No. 6, 47, (1989): Sweet, guaiacol-like, creamy, acidic and slight vanillin-like
Luebke, William tgsc, (1982): Sweet caramel acidic acetoin buttery
No Data