This was helpful to me. Negative rx No reducing sugars. Elaborated and is very useful for the beginners in medical lab technology Reply.
Both plants and animals use amylase when digesting starch. Is it possible that the sugars are reducing sugars because they accept hydrogens instead of give them up? These include starch, cellulose, and glycogen.
Protein Tests. If the color upon boiling is changed into green, then there would be 0.
There is one major problem in this writing…. Sugar needs to be decomposed into its components glucose and fructose then the glucose test would be positive but the starch test would still be negative.
Reducing sugars under alkaline condition tautomerise and form enediols. Most also contain hydrogen and oxygen.
Quality Checking: Positive rx Some reducing sugars. Reducing sugars absent.
If color changes to red,then 1. This includes all monosaccharides eg.
Save my name and email in this browser for the next time I comment. We mixed HCl an acid into starch and re-tested for simple sugars.
The red copper I oxide formed is insoluble in water and is precipitated out of solution. Will it detect the presence of lactobionic acid?