Limonene is an abundant monoterpene in essential oils of citrus fruit peels (Rutaceae).
This systemic review highlights limonene as “an abundant natural molecule with low toxicity and pleiotropic pharmacological activity in cancer cells, targeting various cell‐signaling pathways critically involved in the initiation, growth, and chemoresistance of cancer cells“. (My italics.)
Gomes de Araújo-Filho H. et al. (2021). Anticancer activity of limonene: A systematic review of target signaling pathways. Phytotherapy Research. 17th April 2021. https://doi.org/10.1002/ptr.7125 .
This literature review details the phytochemistry of some commonly used medicinal plants in Romania. Many of the plants listed are common to use in other European countries. A PDF download of the full article is available from the link below.
Isabelle P, Monica B (2021) Highlighting the Compounds with Pharmacological Activity from Some Medicinal Plants from the Area of Romania. Med Aromat Plants (Los Angeles) 10: 370.