Question

Food tests were carried out on four different substances

Answer 1

Answer:

There are different tests which can be used to detect carbohydrates, proteins and lipids in foods.

Aims

To investigate the use of chemical reagents to identify starch, reducing sugars, proteins and fats.

Iodine test for starchMethod:Place one spatula of the food sample on a dish or 1 cm3 if the sample is liquid.Using a dropper, place a few drops of iodine solution onto the food.Record any change in the colour of the solution.

Starch is detected using iodine solution. This turns blue-black in the presence of starch.

Explanation:

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