Limonene – a chemical found in the peels of citrus fruits and in other plants. It is used to make medicine. According to research made by Liew Pooi Yee, it is a major substance present in several Citrus essential oils. These fruits are lemon, mandarin, lime, and many more. The study also compared that citrus fruits have more major substances and the essential oil extracted than the other 11 vegetables and plants. The Food and Drug Administration (FDA) listed the limonene as a GRAS solvent (generally recognized as safe). Due to this, the FDA authorized the use of this chemical as a food additive or flavoring agent in household items.

Limonene and Other Properties

Recent studies found out that limonene possesses antifungal and bactericidal properties aside from GRAS solvent. Therefore, the present of limonene as the major constituent in Citrus fruits such as lime, lemon, and oranges had contributed to the antifungal and antibacterial properties of the fruits (Espina et al., 2013).

Limonene has lots of benefits aside from being GRAS solvent. The study shows that it promotes weight loss, prevent cancer and treat bronchitis. This chemical blocks the cancer-forming chemicals and kills cancer cells in the laboratory. Further research is needed to know if this occurs in humans. That is why many researchers do their best to study calamansi.

Many studies evaluated that the antiangiogenic and antioxidant properties of Calamansi distilled essential oil. Limonene oxide is one of them. It dominates both in calamansi oils. According to Chanthaphon et al. (2008), the amount of limonene contained in essential oil influences the quality it used for aromatherapy, antibacterial, and others significantly. Thus, a higher concentration of the compound found in the essential oil will give a better quality of Citrus essential oil extracted (Kasuan et al., 2009).

Pharmaceuticals create medicinal ointments and cream added limonene. Due to this, the finished product can easily penetrate the skin. Manufacturing industries use it for fragrance, cleaner (solvent), and as an ingredient in water-free hand cleansers.

To summarize, limonene promotes weight loss, possesses antifungal and antibacterial properties, and used to make medicines. It also used in manufacturing industries for fragrances and paints.

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