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Why did a solution of saliva and oats test positive with benedict's test and iodine test if the oats alone tested positive only in the iodine test and the saliva alone was negative for both?
polysaccharides and simple sugar
Is glucose expected to have a positive iodine test?
No, Starch is
Why use iodine solution to test for starch?
The test is positive with starch because the iodine takes up a position in the centre of the starch helix which is blue black.
What is the test results for iodine test?
Iodine test is a test used to determine the presence of starch in a particular substance.A positive result will yield a black color.For example, adding a few drops of iodine solution to potato will stain the amylocytes black since these are the starch-containing structures of potatoes as seen in a microscope.
What is the positive organism for citrate utilization test?
The positive test control organism for citrate utilization test is Klebsiella pneumoniae
If stained with iodine what color will a banana turn?
BlackAns2:It is very unlikely that a ripe banana will have enough starch to turn iodine black. When iodine turns black, it is a positive test for the presence of starch.
What type of food will give a negative Iodine test and a positive Biuret Solution test?
An iodine test is used to test for the presence of starch (or polysaccharides, specifically amylose or amylopectin). A Biuret solution test is used as an indicator for peptide bonds within proteins. Therefore, if you get a negative iodine test and a positive Biuret test, you would probably be testing a animal food source (beef, chicken, pork). Overall, any food that doesn't have starch present within it would be appropriate to use. Hope this helps!
What substance is used to test for starch?
The presence of starch can be tested with the help of Iodine. Similarly Benedict's test solution is also used to detect the presence of starch.
Why would a negative iodine test for starch indicate a positive result for the enzymatic degradation of starch by amylase?
Perhaps the iodine solution was old and gave a false negative.
What is the purpose for iodine test?
The Iodine test is used to test for the presence of starch.
What is Log reduction?
noyhing but test - positive control
Does the Center of disease Control contact you if you test positive for HIV?
No. The CDC will not contact you. Your doctor will inform you if you test positive for HIV.
