title: Peach fruit: metabolic comparative analysis of two varieties with different resistances to insect attacks by NMR spectroscopy.
abstract: The metabolite profile of aqueous extracts of two peach varieties, Percoca Romagnola 7 and Flaminia, with different susceptibilities to  Ceratitis capitata  attack was investigated by means of 1D and 2D high-field NMR spectroscopy. Water-soluble metabolites belonging to different classes such as organic acids (citric, fumaric, malic, quinic, shikimic, and succinic acids), sugars (fucose, fructose, fructose-6-phosphate, glucose, glucose-6-phosphate, rhamnose, sucrose, and xylose), amino acids (alanine, asparagine, isoleucine, threonine, and valine) and other metabolites such as myo-inositol, choline, trigonelline, catechin, chlorogenic and neochlorogenic acids, orthophosphate, and α-l-glycerophosphorylcholine were identified. The metabolite profile together with a suitable statistical analysis was used to make a comparison between the two varieties. The levels of glucose, xylose, myo-inositol, choline, isoleucine, and valine were found to be higher in Flaminia than in Percoca Romagnola 7 samples, whereas the levels of fumaric acid, alanine, quinic acid, sucrose, fucose, and chlorogenic and neochlorogenic acid were found to be higher in Percoca Romagnola 7 than in Flaminia samples.
authors.affiliation: Istituto di Metodologie Chimiche, Laboratorio di Risonanza Magnetica Annalaura Segre, CNR, Rome, Italy.
authors.forename: Donatella
authors.initials: D
authors.lastname: Capitani
authors.forename: Anatoly P
authors.initials: AP
authors.lastname: Sobolev
authors.forename: Alberta
authors.initials: A
authors.lastname: Tomassini
authors.forename: Fabio
authors.initials: F
authors.lastname: Sciubba
authors.forename: Flavio Roberto
authors.initials: FR
authors.lastname: De Salvador
authors.forename: Luisa
authors.initials: L
authors.lastname: Mannina
authors.forename: Maurizio
authors.initials: M
authors.lastname: Delfini
mesh_terms: D000818:Animals; D005638:Fruit / Q000737:chemistry / Q000378:metabolism / Q000469:parasitology*; D007313:Insecta / Q000502:physiology*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D055432:Metabolomics / Q000379:methods*; D010936:Plant Extracts / Q000032:analysis* / Q000378:metabolism; D027861:Prunus / Q000737:chemistry* / Q000378:metabolism / Q000469:parasitology*
chemical_list: D010936:Plant Extracts