Benedict's Test => Test for Reducing Sugar
*Reducing sugar is like your sucrose and glucose. Note : They give energy!
*Steps
Add 2cm cube of reducing sugar (e.g glucose or even banana<=which contains glucose!).
Add equal amt. of Benedict reagent.
Boil using water bath.
Positive results
Mixture turn green - yellow - orange - brick red percipitate
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Iodine Test => Test for starch
*Steps
Add iodine to solution. Ensure that it covers the entire specimen.
Positive Result
A blue-black coloration
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Emulsion Test =>Test for Fats
*Steps
Add fat/oil to test tube containing 2cm cube of ethanol solution.
Shake test tube vigorously to dissolve liquid.
Add equal vol. of cold water.
Results if present
A white precipitate
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Biuret Test =>Test for proteins
*Steps
Add 2cm cube of protein solution to a test tube.
Add 1cm cube of sodium hydroxide to solution and mix well!
Add 2 drops of 1% copper sulfate solution and mix.
No heating required.
Results if present
A violet color develops
This is for those who wanna do a double check like me. =( I lost that paper which all this on it. So lucky for me to still have this.
Little update on my life.
Im feeling kinda actually really depressed today. I skipped lunch, my two great buddies had an art excursion and the three of my good friends went out to eat with someone i didnt really fancy so i didnt join them... So well, i settled with someone else. Lucky for me to have her, or i would have been alone. =( After which we went to ask Bio which was pretty boring.... So ya, im kinda depressed. My a math results aren't fantastic, like theres loads of careless mistakes.... So ya, im upset... Still i took some time to do up this note for my two buddies who want them, so here ya go.
