更多biuret例句

1. Inasmuch as most natural proteins contain several such groups, the biuret reaction is a very general test for proteins.
2. Amongst these is the biuret reaction: a pink colour obtained by adding a trace of copper sulphate and an excess of caustic soda.
3. On now testing a portion of the clear filtrate for peptone by the biuret test, not a trace of a reaction could be obtained.
4. The absence of a biuret reaction would point in that direction and the question must await further study.