Experiment No. 13
ORGANIC COMPOUNDS PRESENT IN FOOD
REPORT SHEET #13 (Revised)
Name: Mayen Therese
Block: BSMT 1D
Date: October 28, 2021
RS #13
Complete the Table:
Test for
Starch
Reducing Sugar
Protein
Fats and Oils
Vitamin C
Chloride ion
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Reagent
Iodine solution
Benedict’s Reagent
Biuret reagent
Composition of
Reagent
Aqueous solution of
iodine and potassium
iodide.
Sodium carbonate,
sodium citrate,
copper(II) sulfate
pentahydrate
Potassium Hydroxide,
Copper (II) Sulfate,
Potassium Sodium
Tartrate
Ethanol
C2H5OH
DCPIP
C12H7Cl2NO2
Silver Nitrate reagent
AgNO3
Positive Test Result
Black or dark blue
Green > yellow >
orange > brick red
precipitate
Purple or lilac
White emulsion
DCIP turned Colorless
White precipitate