E-cinnamic acid derivatives and phenolics from Chilean strawberry fruits, Fragaria chiloensis ssp. chiloensis |
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| Authors: | Cheel José Theoduloz Cristina Rodríguez Jaime Saud Guillermo Caligari Peter D S Schmeda-Hirschmann Guillermo |
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| Institution: | Laboratorio de Química de Productos Naturales, Instituto de Química de Recursos Naturales, Laboratorio de Cultivo Celular, Facultad de Ciencias de la Salud, Centro de Investigaciones en Biotecnología Silvoagrícola, Universidad de Talca, Talca, Chile. |
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| Abstract: | Three E-cinnamic acid glycosides, tryptophan, and cyanidin-3-O-beta-D-glucopyranoside were isolated from ripe fruits of the Chilean strawberry Fragaria chiloensis ssp. chiloensis. 1-O-E-Cinnamoyl-beta-D-xylopyranoside, 1-O-E-cinnamoyl-beta-D-rhamnopyranoside, and 1-O-E-cinnamoyl-alpha-xylofuranosyl-(1-->6)-beta-D-glucopyranose are reported for the first time. The cinnamic acid glycosides and aromatic compound patterns in F. chiloensis fruits were determined by high-performance liquid chromatography (HPLC). HPLC analyses of extracts showed that cyanidin-3-O-beta-D-glucopyranoside and free ellagic acid are present in achenes while the E-cinnamoyl derivatives and tryptophan were identified only in the thalamus. The free radical scavenging effect of the fruit extract can be associated with the anthocyanin content. |
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