RedCabbage - Investigation3 RedCabbageResults Instructions...

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Investigation 3 Red Cabbage Results Instructions 1. Go and buy a Red (sometimes called Purple) Cabbage. 2. Chop the cabbage into small pieces until you have about 2 cups. 3. Get some bottled or filtered water. The idea is to get water that is as close to pH 7 as  possible. Tap water tends to have dissolved minerals that change the pH. 4. Place the cabbage in a large container and add boiling pure water to cover the cabbage.  Allow at least ten minutes for the anthocyanin to dissolve out of the cabbage. (Alternatively,  you can place about 2 cups of cabbage in a blender, cover it with boiling water, and blend it.) 5. Filter out the plant material to obtain a purple or blue colored liquid. Use a strainer or cheese cloth. This liquid should be about pH 7. (The exact color you get depends on the pH of the  water.) 6. Pour a small amount of your red cabbage indicator into a test tube from your kit (or use a 
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  • Fall '14
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