chemistry_pigments violet cabbage 4t eso
Post on 12-Feb-2017
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NATURAL PIGMENTS: “VIOLET”
GRUP 5Jaume Adell, Hamza Bouderaa,
PROCEDURE-We cut the Red cabbage
Extraction-We extracted the pigment of the Red Cabbage by boiling it in water-We separated the violet pigment by filtration
RESULTThe pigment has this chemical formula
Pigment
Dilluted with water
SPECTRUMIn the graph we can see the absorbtion in the violet and green and no absorption for red and blue which gives the colour to the pigment
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