Certain compounds in lemon peel have powerful antibacterial properties and effectively fight common oral-disease-causing bacteria. Lemon peel is high in antioxidants, including D-limonene and vitamin C. This same vitamin C, together with flavonoids may booster your immune system. Research suggests that compounds such as flavonoids, vitamin C, and pectin — the main fiber in lemon peel — may reduce your risk in heart disease.
