Formation of biopolymers owing to the oxidation of esculetine by Cu(II) ions in a Ca-polygalacturonate network (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Formation of biopolymers owing to the oxidation of esculetine by Cu(II) ions in a Ca-polygalacturonate network (Articolo in rivista) (literal)

Anno

• 2012-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/j.jinorgbio.2011.10.015. (literal)

Alternative label

• Castaldi P.; Garau G.; Palma A.; Deiana S (2012)
  Formation of biopolymers owing to the oxidation of esculetine by Cu(II) ions in a Ca-polygalacturonate network
  in Journal of inorganic biochemistry
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Castaldi P.; Garau G.; Palma A.; Deiana S (literal)

Pagina inizio

• 30 (literal)

Pagina fine

• 35 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 108 (literal)

Rivista

• Journal of inorganic biochemistry (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Ispa-cnr (literal)

Titolo

• Formation of biopolymers owing to the oxidation of esculetine by Cu(II) ions in a Ca-polygalacturonate network (literal)

Abstract

• Pectic acids participate in the transport of heavy metal ions in the root apoplasm by establishing interactions that can lead to their partial or total immobilization. The ions accumulated can be mobilized by phenolic compounds and organic acids of the root exudates. In this context, we tested, in aqueous phase, the ability of malic acid and esculetine (ESC) to mobilize the Cu(II) ions accumulated in a Ca-polygalacturonate matrix (Ca-PGA) used as a model of the root apoplasm. The results show that at pH 5.0 and 6.0 malic acid mobilizes about 22% and 34% of the Cu(II) accumulated, respectively, whereas ESC about 12% and 25%. ESC was found to cause the reduction of Cu(II) to Cu(I) with formation of ESC oxidation products. The study of the Cu(II)-ESC binary system evidenced that one molecule of ESC reduces one Cu(II) ion with formation of semiquinonic radicals that couple to form two dimers. The Cu(II) reduction by ESC was found faster in the presence of malic acid. (literal)

Prodotto di

• Tecnologie sostenibili per la trasformazione, la conservazione ed il confezionamento dei prodotti ortofrutticoli (AG.P05.017.001) (Modulo)
• Istituto di scienze delle produzioni alimentari (ISPA) (Istituto)

Autore CNR

• AMEDEO PALMA (Persona)

Insieme di parole chiave

• Keywords of "Formation of biopolymers owing to the oxidation of esculetine by Cu(II) ions in a Ca-polygalacturonate network" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto di scienze delle produzioni alimentari (ISPA) (Istituto)
• Tecnologie sostenibili per la trasformazione, la conservazione ed il confezionamento dei prodotti ortofrutticoli (AG.P05.017.001) (Modulo)

Autore CNR di

• AMEDEO PALMA (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of inorganic biochemistry (Rivista)

Insieme di parole chiave di

• Keywords of "Formation of biopolymers owing to the oxidation of esculetine by Cu(II) ions in a Ca-polygalacturonate network" (Insieme di parole chiave)