ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Influence of crop load and production site on quality of golden delicious apples during storage

Fadanelli L.; Comai M.; Dorigoni A.; Mattivi F. and Boschetti A.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.99

2004

บทคัดย่อ

From September 2002 to May 2003 the evolution ofchemical and physical parameters, together with the aromatic profile and the antioxidants in Golden Delicious apples have been monitored in A.C.-L.O. The measurements were carried out o­n apples from trees grown in different sites of Non valley at altitudes varying from 400 to 900 m a. s. l., with yields ranging from 40 to 110 tons per hectare.

During the 210 days of storage the chemical-physical parameters evolved without significant differences among crop loads. Fruits firmness and total acidity strongly diminished during the first 5 months of storage, especially in the case of the highest growing sites. Soluble solids were neither affected by crop load nor by site. Storage improved healthful features of apples in terms of antioxidants amount. Also the extractable polyphenols and ascorbic acid increased after storage, especially in the higher sites and in moderately cropping trees. The aromatic compounds released by fruits (esters, alcohols, aldehydes), non disruptively measured in real time by means of PTR-MS, were related to crop load of trees and influenced by site features, but their presence and quantity strongly varied during storage.