Food tests:
-Test for Starch:
Food + iodine sol’n = yellowish brown --> blue black
-Test for reducing sugar:
Food + Benedict’s sol’n = clear blue --> brick red (r for reducing sugar)
Note: Benect is long, reducing sugar is also long word, so long and long to together.
-Test for protein:
Food + Biuret’s sol’n (naOH + CuSO4) = blue --> purple (p for protein)
Note: protein is short, biuret is short word, so short and short go together.
-Test for Lipid:
(Food + ethanol) + water = cloudy white emulsion
-Test for vitamin C:
Food + DCPIP = blue --> colorless
Note: The less the time to decolorize, the more vit C the food contains