Saliva Vs Urea

[gene]

Which contains protein whereby a biuret test will show a positive result?

 

I know saliva contain enzymes. Enzymes are protein in nature but aren't there in minute quantities to be accounted for?

 

Isn't urea made from protein?

[Mokele]

No, urea is small, simple molecule. It consists of a carbon with a double-bonded oxygen and two amino groups. Urine usually only contains salt, water, urea, and a hodge-podge of less-common ingredients the body doesn't want to keep, but very few (if any) protien in a healthy, normal human.

 

Rats, interestingly, apparently *do* normally have protien in their urine. But the urea is always the same molecule I described above.

[rakuenso]

Saliva contains the enzyme amylase, which is used in the preliminary stage of breaking down food. Urea is just a form of a nitrogen compound used during excretion of bodily fluids, if anything I would imagine Urea to be a by-product of an enzymatic reaction

[gene]

So if i were to test saliva for proteins. Would i get a positive biuret test?