thumb|right|class=skin-invert-image|UV visible spectrum of quercetin, with lambda max at 369 nm
thumb|right|class=skin-invert-image|UV visible spectrum of quercetin, with lambda max at 369 nm
Quercetin is a plant flavonol from the flavonoid group of polyphenols. It is found in many fruits, vegetables, leaves, seeds, and grains; capers, red onions, and kale are common foods containing appreciable amounts of it. It has a bitter flavor and is used as an ingredient in dietary supplements, beverages, and foods.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).