cyanidin-3-glucoside(75%),methylcyanidinglucoside(13%),cyanidin-3-rhamnoglucoside are the main parts of the black rice pigment.we can see red or purple powder with our naked eyes.it is pure water-soluble. it is absolute a natural pigment abstracted from the episperm of murrey rice by modern biotechnology.widely used in foodstuff,medicine,cosmetics industry etc as coloring(high-temperature 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/kle44-2005. 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.