A Research Note Stability of Anthocyanins fromZebrina pendulaandIpomoea tricolorin a Model Beverage

摘要

ABSTRACTAnthocyanins from two sources with reported high stability,Ipomoea tricolorandZebrina pendula, were compared with extracts from blackberries containing mainly cyanidin‐3‐glucoside (Cn‐3‐G) and a commercial enocyanin. The pigment samples were formulated in a sugar, citrate‐phosphate buffer solution for storage at room temperature. Tristimulus color data and pigment retention were measured at periods up to 82 weeks. TheIpomoeapigments were the most stable.Zebrinaand Cn‐3‐G samples were similar followed by enocyanin. Deacylated pigments from bothIpomoeaandZebrinawere the least stable indicating that the acyl groups confer