RP: Food Tests

Question 1

what does ethanol, iodine, biurets and benedicts solution test for?

Answer 1

ethanol-lipids
biurets-protein
bendicts-sugars
iodine-starch

Question 2

how do you carry out a test for starch using iodine solution?

Answer 2

add the iodine solution to the food sample
if it turns blue/black starch is present

Question 3

how do you test for lipids using ethanol?

Answer 3

add the ethanol to the food sample in a test tube, shake and then add water.
if it turns cloudy/milky then lipids are present

Question 4

how do you test for sugars using benedicts solution?

Answer 4

you add the benedicts solution to the food sample then heat for two minutes in a warm water bath
it will show sugars are present if it goes brick red meaning theres lots of sugars present or a more greeny yello showing not a lot of sugars are present

Question 5

how could you test for protein using biurets solution?

Answer 5

add the biurets solution to the food sample
if it turns purple proteins are present

Question 6

name some hazards and their risks in this experiment

Answer 6

test tube- if it breaks could cut yourself so we used a test tube rack
ethanol-its flammable so we used a water bath to heat the solution instead of a naked flame