Natural extract Anthocyanidins 25% red cabbage extract/purple kale extract powder
What is Red Cabbage Extract ?
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 called anthocyanin(flavin).
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 very 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.
Red cabbage extract is a natural red food color made from purple cabbage (cruciferae) through extraction, concentration, refining and sterilizing processes. Its main compositon are anthocyanins and flavones. It is dissolved in water and water-alcohol solutions. The PH value of the solvent affect its color hue. It will become red or red purple in acid, blue in neutral and green in alkaline.
Anthocyanins are the main components of purple cabbage pigment. It was found that the main components of purple cabbage pigment were the glycosides and acyl compounds of cytophan. A large number of studies have shown that anthocyanins have strong antioxidant activity. Anthocyanins can accelerate microvascular circulation to reduce free radical attack to the eyes, and can also help matrix activation and improve the regeneration ability of rhodopsin. The number of anthocyanins in purple cabbage is related to variety, producing area, climate, season and other factors.