title: Cooking influence on physico-chemical fruit characteristics of eggplant (Solanum melongena L.).
abstract: Physico-chemical traits of three eggplant genotypes ("Tunisina", "Buia" and "L 305") were evaluated before and after two cooking treatments (grilling and boiling). Different genotypes revealed different changes after cooking, with "Tunisina" showing a better retention of phytochemicals with respect to other two genotypes. The main physical phenomena were water loss during grilling, and dry matter loss after boiling. Chlorogenic acid, the main phenolic in eggplant, resulted higher in grilled samples, while delphinidin glycosides resulted more retained in boiled samples. Glycoalkaloids, thiols and biogenic amines were generally stable, while 5-hydroxy-methyl-furfural was found only in grilled samples. Interestingly, Folin-Ciocalteu index and free radical scavenging capacity, measured with three different assays, were generally increased after cooking, with a greater formation of antioxidant substances in grilled samples. NMR relaxation experiments clarified the hypothesis about the changes of eggplant compounds in terms of decomposition of larger molecules and production of small ones after cooking.
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, CREA-IAA Unità di Ricerca per i Processi dell'Industria Agroalimentare, via Venezian 26, 20133 Milan, Italy. Electronic address: roberto.loscalzo@entecra.it.
authors.forename: Roberto
authors.initials: R
authors.lastname: Lo Scalzo
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, CREA-IAA Unità di Ricerca per i Processi dell'Industria Agroalimentare, via Venezian 26, 20133 Milan, Italy. Electronic address: marta.fibiani@entecra.it.
authors.forename: Marta
authors.initials: M
authors.lastname: Fibiani
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, CREA-ORT Centro di Ricerca per l'Orticoltura, via Cavalleggeri 25, 84098 Pontecagnano-Faiano (Salerno), Italy. Electronic address: gianluca.francese@entecra.it.
authors.forename: Gianluca
authors.initials: G
authors.lastname: Francese
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, CREA-ORT Centro di Ricerca per l'Orticoltura, via Cavalleggeri 25, 84098 Pontecagnano-Faiano (Salerno), Italy. Electronic address: antonietta.dalessandro@entecra.it.
authors.forename: Antonietta
authors.initials: A
authors.lastname: D'Alessandro
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, CREA-ORL Unità di Ricerca per l'Orticoltura, via Paullese 28, 26836 Montanaso Lombardo (Lodi), Italy. Electronic address: giuseppeleonardo.rotino@entecra.it.
authors.forename: Giuseppe L
authors.initials: GL
authors.lastname: Rotino
authors.affiliation: Università degli Studi di Palermo, Dipartimento di Scienze Agrarie e Forestali, Viale delle Scienze 4, 90128 Palermo, Italy. Electronic address: pellegrino.conte@unipa.it.
authors.forename: Pellegrino
authors.initials: P
authors.lastname: Conte
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, CREA-ORT Centro di Ricerca per l'Orticoltura, via Cavalleggeri 25, 84098 Pontecagnano-Faiano (Salerno), Italy. Electronic address: giuseppe.mennella@entecra.it.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Mennella
mesh_terms: D000975:Antioxidants / Q000032:analysis / Q000737:chemistry*; D002726:Chlorogenic Acid / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D010636:Phenols / Q000032:analysis*; D064209:Phytochemicals / Q000032:analysis; D032323:Solanum melongena / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D010636:Phenols; D064209:Phytochemicals; D002726:Chlorogenic Acid
keywords: 5-Hydroxy-methyl-furfural (PubChem CID: 237332); Antioxidants; Chlorogenic acid (PubChem CID: 1794427); Cooking; Delphinidin-3-rutinoside (PubChem CID: 44256887); Eggplant; NMR relaxometry; Nasunin (PubChem CID: 44256909); Phenols; Putrescine (PubChem CID: 1045); Solamargine (PubChem CID: 73611); Solasonine (PubChem CID: 119247); Spermidine (PubChem CID: 1102)