Chemistry_pigments red beetroot 4t ESO

1. NATURAL PIGMENTS: RED
Hassna Amaadani
Zoé Sabaté
Laura Felipo
Alba Roca

2. PROCESS
First when we had the beetroots we
started to peel it.

3. After that we cut the beetroots in pieces
with a knife.

4. Finally, we put it in a beaker with water,
we wait until it began boiling and we filter
the result.

5. RESULT
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.
BEETROOT BETANIN
COOKED
IN WATER

6. SPECTRUM
Here we can see there is a lot of absorption
in the colour green and blue and there isn’t
absorption in the red which is the colour we
see.

7. THE
END