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Safflower yellow B (the novel bichalcone glycoside ) is one component of an authentic safflower yellow pigment, UV spectrum of safflower yellow B showed its absorption maxima at 403nm in the water. Safflower yellow B is one of the most notable yellow pigment distribited among reddened flower (Carthamus tincrorius L.). According to colour tone, the pigment is very similar to the pigment of saffron (Crocus sativus L.). (The saffron pigment is the most expensive natural colour in the world). safflower yellow B is a water-soluble plant pigment and it is considered as a most useful yellow tinctorial additive for cosmetics?¨¤food?¨¤beverages?¨¤soft drinks?¨¤fruit jams etc. The cosmetics?¨¤food?¨¤drinks coloured with the dye have been used by high-ranking people because of its royal yellow colour.Very purity, a water-soluble plant pigment , one absorption peak of HPLC.