New research shows that orange peel, rich in flavonoids, pectin, and essential oils, may support cardiovascular health, improve digestion, and boost immunity, opening up ways to effectively utilize this food.
- Orange peel is rich in flavonoids, pectin, and essential oils, which support cardiovascular and digestive health.
- It can lower blood fat and nourish beneficial gut bacteria.
- It should be utilized by grating, drying, or making tea.
A study published in the journal Nutrients in 2026 analyzed 84 studies and 14 clinical trials on orange peels. The results showed that components from orange peels may support cardiovascular and digestive health. This finding opens up a new perspective on utilizing food, as the peel, often considered a waste product, actually possesses high nutritional value, according to the health website Verywell Health.
According to Lauren Panoff, a nutritionist in the US, using orange peels correctly not only helps supplement nutrients but also contributes to reducing food waste in daily life.
New research suggests that orange peel, rich in flavonoids, pectin, and essential oils, may support cardiovascular health and improve digestion. Photo: N.Vy created from GM
Orange peel ingredients
Orange peel contains many important bioactive compounds. Flavonoids such as hesperidin and narirutin help fight oxidation, reduce inflammation, and support blood vessel health.
Pectin is a soluble fiber that helps slow digestion, nourish beneficial bacteria, and control blood sugar.
The essential oils in orange peel, particularly limonene, have anti-inflammatory and antibacterial properties.
Carotenoids like beta-carotene help protect cells and support the immune system. The peel contains higher levels of these substances than the flesh.
Cardiovascular benefits
Orange peel can help lower bad cholesterol and support blood pressure stabilization. The compounds in the peel also contribute to improved insulin sensitivity and reduced inflammation.
Supplementing with flavonoids from orange peel also helps reduce the risk of cardiovascular disease.
Benefits for the digestive system
Pectin in orange peel helps stimulate bowel movements and relieve constipation. This substance also helps reduce inflammation and oxidative stress in the gut.
In addition, orange peel helps protect the intestinal barrier. When this barrier is weakened, the risk of digestive and autoimmune diseases can increase. The fiber in orange peel, when fermented, produces short-chain fatty acids, which help nourish the gut microbiome. This effect is similar to the use of dried tangerine peel in traditional medicine to aid digestion.
How to use orange peel
You can grate orange peel and add it to yogurt or oatmeal. The white pith beneath the orange peel contains a lot of pectin.
Eating whole oranges helps retain the maximum amount of nutrients because juices usually remove the peel and pith. Orange peels can be dried or made into jam for later use, making them easy to eat and a convenient way to supplement nutrients.
Boiling clean orange peels in hot water to make tea helps extract beneficial compounds.
Notes on using orange peel
When using orange peels, it's important to wash them thoroughly and prioritize organic oranges, as the peel may contain pesticide residues or preservatives after harvest, according to the U.S. Food and Drug Administration.
Consumers should scrub orange peels under running water and may soak them in saltwater or a specialized solution to reduce chemical residue. Additionally, avoid using too much orange peel as the concentrated essential oils and compounds can irritate the stomach of sensitive individuals; and avoid using peels that are moldy or treated with chemicals to make them shiny, according to the Cleveland Clinic.