Gelatin and egg albumin.
No,Because albumin does not have any starch in it.
yes
E.coli does not digest the starch on a starch agar plate, therefore it does not produce amylase making it negative.
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Starch can give a negative iodine test when starch is mixed with iodine in water. The iodine gets stuck in the coils of beta amylase molecules and the starch forces the iodine atoms into a linear arrangement in the central groove of the coil.
Theoretically, distilled water should test negative for just about everything but wetness!
Molisch's test is used to detect carbohydrates. Egg albumen is free from carbohydrates.
becouse it contain starch which is polysccaride
Perhaps the iodine solution was old and gave a false negative.
Albumin and pepsin are both proteins, the test for proteins was positive.
no