Corned beef is a processed meat because it is cured through the curing brine. The brine contains both salt and usually a type of pink curing salt which contains sodium nitrite. The pink curing salt is what makes the corned beef a pink color.
Urea or carbamide is an organic compound with the chemical formula C O (N H 2) 2.The molecule has two âNH 2 groups joined by a carbonyl (C=O) functional group.rea serves an important role in the metabolism of nitrogen-containing compounds by animals, and is the main nitrogen-containing substance in the urine of mammals. It is colorless, odorless solid, highly soluble in water, and practically non-toxic (LD50 is 15 g/kg for rats).
Urease is a hydrolytic enzyme that attacks the nitrogen and carbon bond in amide compounds such as urea and forms the alkaline end product ammonia. The presence of urease is detectable when the organisms are grown in a urea broth medium containing the pH indicator phenol red. As the substrate urea is split into its products, the presence of ammonia creates an alkaline environment that causes the phenol red to turn to deep pink.