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Umami A pleasant savory taste imparted by glutamate and ribonucleotides that occur naturally in many foods including meat, fish, vegetables, and dairy products.

UPC Universal Product Code

Urea Product of the urea cycle containing two nitrogen atoms and carbon dioxide; it is the chief form in which nitrogenous end products are excreted.

USDA U.S. Department of Agriculture

Usual intake The long-run average intake of food, nutrients, or a specific nutrient for an individual.

WASH World Action on Salt and Health

Water activity A dimensionless quantity used to represent the energy status of the water in a system.

WCRF World Cancer Research Fund

WHO World Health Organization

WIC The Special Supplemental Nutrition Program for Women, Infants, and Children

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