l-Limonene is the optical isomer of Limonene. It is classified as three types: l-Limonene, d-Limonene optical isomers and one racemic.
It is a colorless to pale yellow liquid with strong fruity and citrus odor.
d-Limonene is naturally found in Pine needle oil, Turpentine, Cajeput oil and other essential oils. l-Limonene presents in essential oil of citrus, such as mandarin oil and sweet orange oil.
Racemic limonene is derived from turpentine. It mainly used in food flavour and synthetic fragrances.