ISHS Acta Horticulturae 498: IV International Symposium on Kiwifruit
CHEMICAL COMPOSITION OF ACTINIDIA DELICIOSA FRUITS AS INFLUENCED BY HARVEST DATE AND STORAGE PERIOD |
| Authors: | A. Ferrandino, S. Guidoni |
| Keywords: | dry matter, soluble solids content, starch content, titratable acidity, post-harvest |
| Abstract:
Starch accumulation, soluble solids content, titratable acidity and dry matter content were determined in fruit from two different but nearby growing locations, harvested at 6.5% soluble solids or 6 days later and during storage at 0°C for 140 days. The relationship between starch accumulation in fruit on the vine and subsequent changes in fruit during storage was studied. Quantities and accumulation patterns of carbohydrates, particularly of starch, and organic acids in kiwifruit were different in fruit growing in two different locations and microclimate zones. During storage differences in pattern of starch hydrolysis were noticed with early harvested fruit having slower hydrolysis than late harvested ones. After storage late harvested fruit had higher soluble solids content than early harvested ones, probably because of greater sugar accumulation on the vine. Confirmation of these results in other environments would demonstrate that harvesting fruit late would generally improve fruit eating quality. | |
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