RELATIONSHIP BETWEEN APPLE BIOACTIVE COMPOUNDS AFTER HARVEST AND THEIR FATE IN COLD STORED FRUITS
Barbara Łata
Warsaw University of Life SciencesAleksandra Trąmpczyńska
Institute of Plant Physiology, University of Bayreuth (Germany)Abstract
This study was to discover if there is any relationship between antioxidant status after harvest and bioactives fate during apple storage. The clearer link in this issue concerned enzymatic part of antioxidant apparatus, for which the particularly high year effect was noted. Except for anthocyanins, non-enzymatic bioactives end-status was not strictly related to their harvest size. However the content during the first months of storage might be closely connected with antioxidant status measured after harvest. A significantly higher concentration of majority assessed antioxidants was characterized by apple harvested and stored in 2005/2006 season, on the average. Simultaneously many, statistically proved, correlations over storage between the examined antioxidants at that time existed. Total antioxidant power (FRAP assay) significantly increased after the first storage period, probably as a result of fruit acclimatory response to storage conditions, and next decreased. In general, changes of FRAP value reflected fluctuations of individual compounds measured in this study.
Keywords:
Malus domestica Borkh, cold storage, antioxidants, FRAP assayReferences
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Warsaw University of Life Sciences
Institute of Plant Physiology, University of Bayreuth (Germany)
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