Category: Flavonoids

Over 8,000 different flavonoid compounds exist in nature, but many people often mistake two of the most popular, luteolin and quercetin, for being identical. While both are powerful plant-derived antioxidants from the flavonoid family, they possess distinct chemical structures and unique biological effects on the body.

Over 300 plant species have been identified as containing luteolin, a natural flavonoid. This powerful compound is widely distributed in fruits, vegetables, and medicinal herbs, raising the important question: is luteolin natural, and what are its properties?

According to the Phenol-Explorer database, fresh common thyme (Thymus vulgaris) contains approximately 39.50 mg of luteolin per 100g, while dried thyme can contain around 36.00 mg per 100g. These figures highlight thyme as a notable source of this powerful flavonoid, though content can vary based on several factors.

Several scientific reviews confirm that chamomile, known for its calming effects, contains a variety of flavonoids, including luteolin. This bioactive compound is one of many that contribute to the herbal tea's potential therapeutic properties beyond its popular sedative effects.

Baicalin is an abundant flavonoid found in the dried roots of *Scutellaria baicalensis*, a key herb in Traditional Chinese Medicine. This article explores why baicalin is classified as a flavonoid, detailing its unique structure and well-researched health-promoting properties.

According to nutritional studies, a single, medium-sized apple can contain approximately 4,035 micrograms (or 4.035 milligrams) of the flavonoid fisetin. This amount, while significant, is substantially lower than that found in other fisetin-rich fruits like strawberries.

Epidemiological studies suggest that diets rich in flavonoids like apigenin are associated with a lower risk of chronic diseases. Yet, the question remains for many considering supplementation: does apigenin actually work in a concentrated, clinical setting, or is its reputation based primarily on observational data?

Strawberries are widely recognized as one of the richest dietary sources of the flavonoid fisetin, with an average concentration of approximately 160 micrograms (mcg) per gram. This makes them a more potent source than many other fruits and vegetables, offering a compelling reason to include them in your diet.

According to a study published by the National Institutes of Health, the average intake of kaempferol among U.S. adults is approximately 5.4 mg per day. This diverse flavonoid is a potent antioxidant found in a wide variety of plants, and knowing which foods contain kaempferol is key to maximizing its health benefits.

Studies confirm that celery is a significant dietary source of the flavonoid apigenin, with research indicating its presence throughout the plant, including the stalks, leaves, and especially the seeds. This potent plant compound is a focus of scientific interest for its antioxidant and anti-inflammatory properties.