jf303644f_si_001.pdf (251.48 kB)
Diversity of Phenolic Profiles in the Fruit Skin of Prunus domestica Plums and Related Species
journal contribution
posted on 2012-12-05, 00:00 authored by Dieter Treutter, Diwei Wang, Mohamed
A. Farag, Giselle D. Argueta Baires, Susanne Rühmann, Michael NeumüllerThe fruits of the European plum Prunus
domestica exhibit a great diversity in appearance
including skin colors. This
study attempts to elucidate the phenylpropanoid and flavonoid profiles
of 28 plum varieties belonging to P. domestica and
related species as well as hybrids. A total of 49 phenolic compounds
extracted from the fruit skin were quantitatively evaluated in an
HPLC-DAD-based metabolomic study. The total phenolic contents of the
cultivars varied among 0.4–29.9 mg/g fresh weight. The predominant
anthocyanins were glycosides of cyanidin and peonidin, and rutin was
the principal flavonol, whereas neochlorogenic acid and n-chlorogenic acid were the main hydroxycinnamic acids. Aside from
these major phenolic classes, a group of tentatively identified flavones
and several acylated flavonoids were also found. Principal component
analysis revealed that anthocyanins and hydroxycinnamic acids contributed
most to variety separation. The heterogeneity between the different
varieties was also assessed using hierarchical cluster analysis of
sample phenolics profile. A simple separation of species could not
be found confirming the close relationship among them.