Titre :
|
Delayed storage and controlled atmosphere storage of nectarines : two strategies to prevent woolliness
|
Auteurs :
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H. Zhou ;
S. Lurie ;
A. Lers ;
AL Et
|
Type de document :
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article/chapitre/communication
|
Année de publication :
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2000
|
Format :
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p. 133-141
|
Langues:
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= Anglais
|
Catégories :
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INDUSTRIE AGRO-ALIMENTAIRE
|
Mots-clés:
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NECTARINE
;
REFRIGERATION
;
ATMOSPHERE CONTROLEE
;
ACTIVITE ENZYMATIQUE
;
QUALITE ORGANOLEPTIQUE
|
Résumé :
|
Both delayed storage (DS) of nectarine (Prunus persica cv. Flavortop) fruits held for 48 h at 20°C before storage, and controlled atmosphere (CA) storage, fruits stored at 10% CO, 3% O, alleviated or prevented chilling injury manifested as woolliness in nectarine fruits stored for 4 or 6 weeks at 0°C. Control fruits showed 80 and 100% woolliness during ripening after 4 or 6 weeks at 0°C, respectively. DS and CA were similar in their beneficial effect after 4 weeks and CA was better after 6 weeks storage. The two storage processes appeared to prevent woolliness by different mechanisms. DS initiated ripening so that at removal from storage polygalacturonase (PG) activity was higher and pectin esterase (PE) activity lower than in control fruits. The PG activity increased further during ripening, and normal softening occurred in DS fruits. There was no difference in mRNA abundance of PG and PE between DS and control fruits. CA repressed both mRNA levels and activity of PG during storage, but allowed recovery of activity during ripening.
|
Source :
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Postharvest biology and technology, vol.18, n°2
|