Limonene is a cyclic monoterpene and a major component in the oil of citrus fruit peels. It is commonly found in oranges, lemons, and other citrus fruits, contributing to their characteristic aroma. Limonene exists in two enantiomeric forms: D-limonene, which has a pleasant citrus scent, and L-limonene, which has a piney, turpentine-like odor. D-limonene is the more prevalent form in nature and is widely used in the food and beverage industry as a flavoring agent. It is also used in cleaning products and cosmetics due to its pleasant scent and solvent properties. Limonene is known for its potential health benefits, including anti-inflammatory and antioxidant effects. However, it is primarily recognized for its role in imparting flavor and fragrance in food products.