Osszefuggesek a korte beltartalma es tarolhatosaga.
1991
Sass P. | Lakner Z.
In Hungary 80-1000 thousand t/year pears are produced, amounting to 5-7 % of the total fruit production. The authors studied changes in the storability and quality components of 4 winter pear varieties (Hardenpont teli vajkorte, Bosc kobak, Serres Oliver, Teli esperes) for over 8 years. Harvesting was carried out on three occasions: ten days prior to the farm harvesting date, at this date and days after it. The fruit was put into cold storage at 1-2 centigrade with 88-90 % humidity in 4 x 20 kg lots per treatment. Measurements on refraction, total sugar content, inverse sugar content, acid content, sugar/acid ratio, reducing/inverse sugar ratio, flesh hardness and rotting losses were carried out prior to storage and then once a month. Prior to storage the basic quality components showed no significant differences for the varieties, though the standard deviation values were high. In the course of storage there was a reduction in acid content and flesh hardness of up to 25-40 %. The refraction and the sugar/acid ratio increased. When the storage period was increased from 60 to 120 days the shrinkage losses and rotting rose to 40-45 %. All the varieties tested were characterized by a strictly monotonous reduction in acid content to 50-60 % of initial value. This reduction was parallel to curve of storage losses, which means that the extent of storage losses can be predicted from the acid content measured at harvesting.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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