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Beetroot contains red pigments called betalains, located within the cell vacuole. Normally the pigments can’t pass through membranes but they leak out when the beetroot is cooked.
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Why Does The Colour Leak Out Of Cooked Beetroot? If you read a recipe for cooked beetroot it will usually recommend that you don't remove the outer skin of the beetroot and don't cut off al the stalk and root if you want to avoid getting lots of red dye in the cooking water. Beetroot contains red pigments called betalains, located within the cell vacuole. Normally the pigments can't pass through membranes but they leak out when the beetroot is cooked. Aim - The aim of this practical is to use beetroot to examine the effect of the temperature on cell membranes and relate the effects observed to membrane structure. To function correctly a cell needs to be able to control transport across the partially permeable cell membrane. Theory - To understand how the red pigment leaks out of the beetroot it is essential that we understand the molecular Structure of a plasma...
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