Hi
Does red cabbage contain one or many anthocyanins & how do you know?
this really helps--thank you!
Hello! Red cabbage contains multiple anthocyanins, which are pigments responsible for its vibrant color. To determine whether red cabbage contains one or many anthocyanins, you can use a simple experiment called pH indicator test.
Here's how you can do it:
1. Start by collecting red cabbage leaves. Around 2-3 leaves should be enough.
2. Cut the leaves into small pieces and place them in a blender.
3. Add distilled water to the blender and blend the mixture until it turns into a purple liquid.
4. Strain the liquid and transfer it into several small containers or test tubes.
5. Now, with each container, you will test the pH (acidity) of the sample by adding different substances that change color depending on the pH value.
6. For example, you can add a small amount of lemon juice to one container, vinegar to another, and baking soda solution (with a known pH) to a third container. These substances will change the color of the cabbage extract differently.
7. Observe the color changes in each container and compare them.
8. If the color changes differently in each container, it indicates that red cabbage contains multiple anthocyanins.
9. You can also repeat the experiment using different concentrations of the substances to further analyze the effect on color change.
This pH indicator test demonstrates the presence of multiple anthocyanins in red cabbage. It is a simple and effective way to observe the different colors produced by each anthocyanin present.