Today we tested food samples if they contained starch, sugar, protein and fat. We added chemicals such as Bluret Solution A and B and Benedict's solution to the food. We could tell what it contained by the colour of the food. For example, to find starch in food, you had to add iodine to the food and it would turn bluish-black if it had starch in it.
My group put crushed up tiney teddies in a test tube and we added benedicts solution and put the test tube in a beaker of hot water and wated five minuets and it turded a yellowy green this meant that it contaned suger.
ReplyDeleteIt was really interesting to see what had sugar, protien, fat etc. in it. The instant colour change was different for every type of food. I have never done anything like this before, it was awsome to have this sort of chance to experiment on things like this one.
ReplyDeleteIt was really intersting when we added the idoine to the food samples to see what coulor it came out and most of the samples turned out a black or a dark blue and then we could see which ones had startch.
ReplyDeleteIt was really interesting to see which kinds of food had sugar, protein, fat and starch. It was also interesting to see how some food changed colour when Benedicts solution, Iodine Solution, Biuret Solution A and Biuret Solution B was added. It was very fun!!!
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