Identification and quantitation of six phenolic amides from Amaranthus

PEDERSEN HANS A.; STEFFENSEN STINE K.; CHRISTOPHERSEN CARSTEN; MORTENSEN ANNE G.; JORGENSEN LISE N.; NIVEYRO SELENE; DE TROIANI ROSA M.; RODRIGUEZ-ENRIQUEZ RICARDO JOSÉ; BARBA-DE LA ROSA ANNA PAULA; FOMSGAARD INGE S.

Anaheim

Encuentro; 241st National Meeting and Exposition of the American-Chemical-Society; 2011

American Chemical Society

Six phenolic amides have been identified and quantified in amaranth using a simple synthesis and a straightforward LC-MS/MS method. Four of the amides had not previously been reported from amaranth, and no quantitative LC-MS method had been reported. Identification and quantification was achieved from a synthesized library of amides since several similar compounds have been reported in diverse plant species. Identification of 25% of the synthesized amides indicates that these compounds are widely distributed in the plant kingdom, and this is the first time six phenolic amides are reported from the same plant. Concentrations of phenolic amides vary widely: feruloyltyramine was present in quantities of 5.3 to 114.3 μg/g and feruloyldopamine in quantities of 0.2 to 10.3 μg/g, depending on the plant sample. Nutritional and health impacts of phenolic amides should be studied. This work was part of the European Commission sixth Framework Programme contract number 032263 AMARANTH: FUTURE-FOOD.