Red Cabbage Juice Colour

 

RED CABBAGE COLOUR
Shade

pH 3.0

pH 4.0

pH 7.0

pink to raspberry red

grape

blue

Acceptable pH Range 2.0 - 4.5
Stability

heat

light

acid

very good

very good

very good

Forms powder, liquid
Solubility water, ethanol, propylene glycol

Red Cabbage

The red cabbage (Brassica oleracea var. capitata f. rubra) is a sort of cabbage, also known as red kraut or blue kraut after preparation. Its leaves are coloured dark red/purple. However, the plant changes its colour according to the pH value of the soil, due to a pigment belonging to anthocyanins(flavins). On acidic soils, the leaves grow more reddish while an alkaline soil will produce rather greenish-yellow coloured cabbages. This explains the fact that the same plant is known by different colours in various regions. Furthermore, the juice of red cabbage can be used as a home-made pH indicator, turning red in acid and blue in basic solutions. It can be found in Northern Europe, throughout the Americas, and in China.

Source, Wikipedia


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