Anthocyanins of Tradescantia pallida. Potential Food Colorants

摘要

ABSTRACTTradescantia pallida(syn. Setcreaseapurpurea) contained two major anthocyanins. One was cyanidin‐3,7,31‐triglucoside with 3 molecules of ferulic acid and an extra terminal glucose. The other pigment was similar but without the terminal glucose unit. The nonacyl portion was indentified by comparison with the pigment ofZebrina pendula.The acyl/aglycone and acyl/sugar ratios were determined by using internal standards and response factors with HPLC. The pigments may have potential as food colora