The differences in polyphenol oxidase, peroxidase, pectin methylesterase and polygalacturonase activities as well as the main physical and chemical attributes of nine different slice portions (from the inner to the outer end and from the blossom to the stem end) of two groups of melon (Cucumis melo var. cantalupensis'Galia' cv. and inodorus'Piel de sapo' cv.) at commercial maturity were studied. Moving from the inner to the outer end of the pulp, physico-chemical properties, such as pH, total soluble solids and phenolics increased whereas titratable acidity, firmness and Chroma decreased in both types, reflecting different degrees of maturity within the same fruit. As for physico-chemical attributes, the enzymatic activities responsible for browning and softening phenomena showed an increasing trend moving from the inner to the outer end of mesocarp in both cv., except for polygalacturonase in cantalupensis type.

DISTRIBUTION OF DEGRADATIVE ENZYMATIC ACTIVITIES IN THE MESOCARP OF TWO MELON GROUPS

BARBAGALLO, Riccardo Nunzio;
2010-01-01

Abstract

The differences in polyphenol oxidase, peroxidase, pectin methylesterase and polygalacturonase activities as well as the main physical and chemical attributes of nine different slice portions (from the inner to the outer end and from the blossom to the stem end) of two groups of melon (Cucumis melo var. cantalupensis'Galia' cv. and inodorus'Piel de sapo' cv.) at commercial maturity were studied. Moving from the inner to the outer end of the pulp, physico-chemical properties, such as pH, total soluble solids and phenolics increased whereas titratable acidity, firmness and Chroma decreased in both types, reflecting different degrees of maturity within the same fruit. As for physico-chemical attributes, the enzymatic activities responsible for browning and softening phenomena showed an increasing trend moving from the inner to the outer end of mesocarp in both cv., except for polygalacturonase in cantalupensis type.
2010
MELON; ENZYME ACTIVITY; QUALITY
File in questo prodotto:
File Dimensione Formato  
2010 - Melone (Int. J. Food Sci. & Technol.).pdf

solo gestori archivio

Tipologia: Versione Editoriale (PDF)
Licenza: Non specificato
Dimensione 748.15 kB
Formato Adobe PDF
748.15 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/7872
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 8
  • ???jsp.display-item.citation.isi??? 5
social impact