Stability Properties

LINABLUE® powder is completely water soluble. It can dissolve quickly in cold and warm water to make a homogeneous transparent solution. LINABLUE® does not clump nor form solids in water to give the perfect natural blue color solution.

pH Stability

Its color shade is stable at around pH 4.5 – 8.0. Aggregation and precipitation occur at around pH 4.2 as phycocyanin has a combined structure with protein. When used together with milk, egg or other ingredients containing protein, its color stability improves.

Heat Stability

As a colorant made of protein, it is recommended to add LINABLUE® in a solution after it has cooled down or at about 60°C while cooling immediately after adding. Its stability improves in high density sucrose solutions.

Light Stability

Its color shade deteriorates when exposed to light, but when used together with an antioxidation agent like sodium ascorbate, its color stability can improve.