Flavonoid and chlorogenic acid concentrations in skin of 'Jonagold' and 'Elstar' apples during and after regular and ultra low oxygen storage

acido clorogenico almacenamiento chemical composition chlorogenic acid composition chimique flavonoide flavonoides flavonoids glicosidos glycoside glycosides malus pumila metabolism metabolisme metabolismo nutritive value phenolic compounds quercetin quercetina stockage storage valeur nutritive valor nutritivo variedades varieties