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Titolo:
Polyphenoloxidase activity and polyphenol levels in organically and conventionally grown peach (Prunus persica L., cv. Regina bianca) and pear (Pyruscommunis L., cv. Williams)
Autore:
Carbonaro, M; Mattera, M;
Indirizzi:
Ist Nazl Ric Alimenti & Nutr, I-00178 Rome, Italy Ist Nazl Ric Alimenti & Nutr Rome Italy I-00178 utr, I-00178 Rome, Italy
Titolo Testata:
FOOD CHEMISTRY
fascicolo: 4, volume: 72, anno: 2001,
pagine: 419 - 424
SICI:
0308-8146(200103)72:4<419:PAAPLI>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
APPLE POLYPHENOLOXIDASE; PHENOLIC COMPOSITION; PARTIAL-PURIFICATION; OXIDASE; CULTIVARS; MATURITY; STORAGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Carbonaro, M Ist Nazl Ric Alimenti & Nutr, V Ardeatina 546, I-00178 Rome, Italy Ist Nazl Ric Alimenti & Nutr V Ardeatina 546 Rome Italy I-00178
Citazione:
M. Carbonaro e M. Mattera, "Polyphenoloxidase activity and polyphenol levels in organically and conventionally grown peach (Prunus persica L., cv. Regina bianca) and pear (Pyruscommunis L., cv. Williams)", FOOD CHEM, 72(4), 2001, pp. 419-424

Abstract

Polyphenoloxidase (PPO) activity and total polyphenol content were tested in organically and conventionally grown whole fruits, peach (Prunus persicaL., cv. Regina bianca) and pear (Pyrus communis L., cv. Williams), in order to evaluate the existence of a relationship between these parameters and of differences between fruits obtained with the two cultivation practices. Organic fruits were obtained on three different grounds: subterranean clover (sample A), spontaneous weed cover (sample B) and tilled (sample C). Fromthe latter soil, the conventionally grown fruits were produced. All organic peach samples showed a highly significant (P<0.001) increase in polyphenols (mg equivalents of tannic acid/100 g fresh sample) compared with conventional peaches, while, of the three organic pear samples, samples B and C displayed an increased polyphenol content with respect to the conventionally grown sample (P<0.05). Activity of PPO (U.E./100 g fresh sample), extractedin appropriate conditions and tested towards 1 mM chlorogenic and caffeic acid, was significantly higher in most of the organic peach and pear samples analyzed with respect to the conventional samples. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 17:01:22