Test tube 4A had no amylase enzyme added, which is needed to break down starch into simpler sugars. Without amylase, the starch molecule could not be broken down, resulting in very little to no starch digestion in test tube 4A.
Starch digestion (hydrolysis) is incomplete
The result of the iodine test indicates the presence of starch in the endosperm. When the endosperm is stained blue-black by iodine, it suggests a high starch content. Conversely, if there is little to no staining, it indicates a low starch content in the endosperm.
It will usually turn black that is a starch test you can test It on various vegetables and sources if food like peanuts and bananas and if they turn black it means they have some trace of starch in them
You can test for starch in food by dropping iodine on food on an agar plate, if it turns black, it contains starch.
IKI solution is used to test for the presence of starch. Starch will turn blue-black in the presence of IKI solution, indicating a positive test result for the presence of starch.
To test for starch, you will need iodine solution and the sample you want to test. The iodine solution will react with the starch to produce a blue-black color, confirming the presence of starch in the sample.
The purpose of the iodine test is to detect the presence of starch. Iodine reacts with starch molecules and forms a blue-black color, allowing for visual identification of the presence of starch in a sample.
The iodine test is used to test for the presence of starch. Iodine solution interacts with the starch molecules, causing a color change from brownish-yellow to blue or black.
I2KI (iodine/potassium iodide solution) is used to test for the presence of starch. In the presence of starch, the solution will turn blue-black due to the formation of a starch-iodine complex.
The iodine test is commonly used to test for the presence of starch. When iodine is added to a sample containing starch, it will turn blue-black in color if starch is present. Another test is the Benedict's test, where a color change from blue to red-orange indicates the presence of reducing sugars, which can be produced from starch through the process of hydrolysis.
I think you mean starch and to test for it you have to use iodine and this turns black if there is starch in your food if nothing happens then there is no starch in the food.