Science Enhanced S&S Biology - Virginia Department of ...

A color change from blue to green to yellow/orange/red indicates the presence of a simple (reducing) sugar. 4. Record results in Table 3. Iodine test for starch. 1. Add 1–5 drops of iodine solution directly to the sample solid food or solution. 2. The result is almost instantaneous, but allow iodine to soak into solids. A color change from orange to blue-black shows the presence of starch. 3 ... ................
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