Bitter principles

Also found in: Medical.
(Chem.) a class of substances, extracted from vegetable products, having strong bitter taste but with no sharply defined chemical characteristics.

See also: Bitter

References in periodicals archive ?
For example, to prevent migraines we are told to eat foods containing vitamin B3, bitter principles and quercetin such as Brazil nuts, garlic, muesli, mushrooms, oats, onion, rice and sweetcorn.
Taraxacum species are rich in bitter principles due to the sesquiterpenes.