Of red lettuce anthocyanins

Fig. (8). HPLC chromatogram of red lettuce anthocyanins and other phenols (1) caffeoyltartaric acid, (2) chlorogenic acid, (3) dicaffeoyltartaric acid, (4) quercetin 7-glucoside 3-(6 -malonylglucoside), (5) dicaffeoylquinic acid dsochlorogenic acid), (6) quercetin 3-glucuronido, (7) quercetin 3-glucosido, (8) quercetin 3-malonylglucoside, and (9) cyanidin 3-malonylglucoside. HPLC conditions RP Cjg column (12 x 0.4 cm particle size 5 pm). Mobile phase acidified water (5% formic acid) (A) and methanol (B). Gradient 0 min- 5% B, 25 min- 40% B. Flow rate I mL/min.

One acetyl group was identified at position 6 in highbush blueberries, " plums, " red leaf lettuce," and all grapes (Table 4.3.2) and at position 4 in Eurya japonica berries. Although acetyls were found in anthocyanins from strawberries " " and purple mashua, the positions of this acyl group were not assigned. 

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