Isolation and Identification of C-Flavonol Glycoside from the Allium cepa Linn (Onions)

Allium cepa Linn belongs to the family of Liliaceae. The present work reveals that the flavonoids “Quercetin” structure was isolated and identified from the extraction of Onions species, which was established on the basis of chemical and spectral studies. The abundant of onion consumption (raw/processed) is fully justified as a cancer preventive and it’s also appropriate with diets of those suffering from kidney stones, urinary infections or any renal disorders. This study is also of practical importance because Quercetin is an important ingredient of Allium cepa.