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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GM - Potravinářství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2000

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Czech Journal of Food Sciences (Potravinářské vědy)

ISSN

1212-1800

e-ISSN

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Svazek periodika

18

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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