Eriocitrin

Eriocitrin is a naturally occurring flavanone glycoside, a type of flavonoid within the larger family of polyphenols. It is also known as eriodictyol-7-O-rutinoside.

Eriocitrin is especially associated with lemons and peppermint. Research into this plant compound has focused largely on its antioxidant and anti-inflammatory activity and its possible role in metabolic health.

Why Eriocitrin Matters

Antioxidant Support

One of the best-studied properties of eriocitrin is its antioxidant activity. Antioxidants help protect cells against oxidative stress caused when reactive molecules overwhelm the body's antioxidant defences.

Laboratory research and reviews suggest eriocitrin can participate in antioxidant processes and may help reduce oxidative damage. This is one reason researchers are investigating its possible relevance to long-term metabolic and cardiovascular health.

Inflammation

Eriocitrin has demonstrated anti-inflammatory activity in experimental research. Chronic inflammation is associated with numerous health conditions, making flavonoids such as eriocitrin an area of continuing research.

These findings are promising, but much of the evidence remains preclinical and should not be interpreted as proof that eriocitrin treats inflammatory disease in people.

Blood Sugar & Metabolic Health

Eriocitrin is also being investigated for its potential relationship with glucose metabolism, insulin sensitivity and metabolic health.

Laboratory research using peppermint polyphenols found that eriocitrin contributed substantially to the extract's ability to inhibit the formation of advanced glycation end products (AGEs). Glycation occurs when sugars react with proteins or fats, and excessive AGE formation is associated with aging and metabolic disorders.

This is an interesting area of research, but laboratory results do not mean peppermint or isolated eriocitrin can replace established treatment for diabetes or other metabolic conditions.

Cardiovascular Health

Researchers have also examined eriocitrin in relation to oxidative stress, inflammation, lipid metabolism and cardiovascular health. These interconnected processes can influence the health of blood vessels and the cardiovascular system.

Current research supports further investigation rather than treating eriocitrin as a proven cardiovascular therapy.

Gut Metabolism

After eriocitrin is consumed, it does not simply remain unchanged in the body. Gut microorganisms help metabolize it, producing compounds including eriodictyol and other metabolites.

This interaction between plant compounds, intestinal microbes and human metabolism is another reason eriocitrin continues to attract research interest.

Plants Containing Eriocitrin

Common Plants That Can Be Grown Indoors Year-Round

Peppermint (Mentha × piperita) — One of the most relevant non-citrus plant sources of eriocitrin. Studies of peppermint leaves and extracts have repeatedly identified eriocitrin as one of the plant's major flavonoids. It has also been detected in ordinary peppermint tea prepared with water. Peppermint can be grown indoors in containers throughout the year when provided with adequate light and water.

Lemon (Citrus limon) — Lemon is one of the best-established dietary sources of eriocitrin, particularly in the peel and juice. A dwarf lemon tree can also be container-grown indoors, although it requires considerably more space and light than peppermint.

Native Ontario Plants

The native Ontario plant sources of eriocitrin are not strong enough to include as a source. 

A Practical Source: Peppermint Tea

Peppermint provides an interesting example of how a naturally occurring flavonoid can be obtained from a familiar plant rather than an isolated supplement.

Research examining aqueous peppermint preparations has confirmed that eriocitrin can be present in peppermint tea. One analysis reported measurable eriocitrin in a water-based peppermint infusion, while research across commercial peppermint teas also identified eriocitrin among their most abundant polyphenolic compounds.

For people interested in growing some of their own plants in small spaces, peppermint is particularly practical because it can be maintained indoors year-round and its leaves can be harvested repeatedly.

The Bigger Picture

Eriocitrin is a good example of why learning about the individual compounds within plants can help us better understand their potential role in nutrition and wellness.

The research does not mean that one flavonoid is a cure or that consuming more is automatically better. Instead, compounds such as eriocitrin help explain some of the biological activity researchers observe in foods and herbs such as lemons and peppermint.

Understanding what is in the plant, what research has discovered, and what remains uncertain provides another piece of information people can use when making their own health and wellness choices.

Disclaimer

This Wellness Profile is for educational purposes only and is not medical advice. Plant compounds can affect people differently and may interact with medications or health conditions. Speak with a qualified healthcare professional when appropriate, particularly before using concentrated extracts or supplements.