Acid Test For Starch And Glycogen

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Solution
#9 Clear, colorless solution. P; Purple
Protein
Solution (+control)
#10 Clear, yellow-orange solution. N
Beer
#11 Clear, colorless solution. N
Distilled
Water(-control)
#12 Clear, colorless solution. P; Purple
Unknown
*Table #2 shows the results of biuret test on the given 12 samples, in which 2 are indicated positive: sample #9, the positive control of this section, and sample #12, the unknown.

Table #3 Iodine Test for Starch and Glycogen in the Given Samples
Samples Observation of Samples
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P; Reddish Brown
1% Glycogen
Solution
#8 Clear, colorless solution. P; Blue-Black
1% Starch
Solution
#9 Clear, colorless solution. N
Protein
Solution
#10 Clear, yellow-orange solution. N
Beer
#11 Clear, colorless solution. N
Distilled
Water(-control)
#12 Clear, colorless solution. N
Unknown
*Table #3shows the results of iodine test on the given 12 samples, in which 2 are indicated positive: sample #7, the glycogen solution, and sample #8, the starch solution. The two can also be considered as positive controls for this section.

Table #4 Benedict 's Test for Oligosaccharides in the Given Samples

#1 Clear, colorless solution. P; Brown
1% Glucose
Solution (+control)
#2 Clear, colorless solution. N
0.3% Glucose
-1-phosphate
#3 Clear, colorless solution. P; Reddish Brown
1% Maltose
Solution
#4 Clear, slightly yellow solution. P; Orange
Honey
Solution
#5 Clear, colorless solution. N
1%
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