Effect of the year and storage on ascorbic acid content and total polyphenol content in three apple varieties.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F00%3A00000861" target="_blank" >RIV/60460709:41210/00:00000861 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Effect of the year and storage on ascorbic acid content and total polyphenol content in three apple varieties.
Original language description
In two years (1997 and 1998) ascorbic acid content (AA) and total polyphenol content (TP) were investigated in three apple varieties (Idared, Gloster and Ontario) cultivated under equal conditions on the experimental plot of Czech University of Agriculture in Prague - Suchdol. AA content was determined by titration method with 2,6-dichlorphenolindophenol and TP content spectrophotometrically with Folin-Ciocalteau´s reagent. In two years´ trials AA and TP contents were estimated immediately after harvestin September and then monthly during storage for six months at +50 C. Statistically high significant differences were determined both in AA and TP contents during storage period - there was observed meaningful AA and TP decrease. The highest antioxidantcontent showed in both years late variety Ontario (av. 12.05 mg.kg-1 AA, 2011.5 mg.kg-1 TP), the lowest variety Gloster (in average 5.45 mg.kg-1 AA, 1738.0 mg.kg-1 TP). In this context the variety Ontario is the most favourable. The high
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
GM - Food industry
OECD FORD branch
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Publication year
2000
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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