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Spirulina blue is a natural food coloring derived from spirulina, a type of spiral-shaped microalgae.
Its primary components are phycocyanin and spirulina protein. Spirulina is known for its high protein content and complete amino acid composition.
Spirulina blue appears as sky-blue and maintains excellent heat stability.
Gardenia blue is an edible colorant obtained by processing gardenia yellow pigment with food enzymes.
The color's shade and pH tolerance vary depending on the gardenia blue variety. Some gardenia blue varieties can endure pH as low as 2.5 without precipitation thanks to their resistance to acid.
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