alias name: blueberry leef color quercetin and phenolic glycoside are the main parts of the blueberry chlorophyll color.we can see blue-black extractive with our naked eyes.the stability of the pigment under acid-forming condition seems good. it is absolute a natural pigment abstracted from the leaves of vaccinium beacteatum thunb by modern biotechnology .widely used in protein,hair, starch, white vinegar, salad oil as natural coloring. this product has been exported to eu, japan, usa, asia etc. the physical level and microbiological level can meet the export standards well.for avoiding fakes,this product already has normal enterprise no: q/kle93-2005. package: cardboard drums, with double aseptic food poly bags inside. or by cartons, with vacual aseptic food poly bags inside, 20kgs per carton with 8 bags inside,2.5kg per bag.