About: Total polyphenol and main flavonoid antioxidats in different onion (Allium cepa L.) varieties

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About: Total polyphenol and main flavonoid antioxidats in different onion (Allium cepa L.) varieties Goto Sponge NotDistinct Permalink

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Description	In this study polyphenolic antioxidant compounds in three onion varieties (red - cv. Karmen, yellow - cv. Všetana and white - cv. Ala) regarding their total content and qualitative composition of flavonoid complex were studied. Also the effects of temperature and storage period during storage of onion were studied. The total content of polyphenols was estimated spectrophotometrically with Folin-Ciocalteau´s phenolic reagent and individual flavonoid components by HPLC method using Waters TM chromatograph on Watrex 250x4 mm Sepharon SGX C18 7mm column with gradient elution. The highest amount of polyphenolic compounds was found in red variety Karmen (108,300 mg.kg-1 DM), the lowest amount in white variety Ala (26,445 mg.kg-1 DM), meanwhile the yellow variety Všetana had average content of total polyphenolic compounds 65,210 mg.kg-1 DM. An increase of total polyphenols during storage in red and yellow varieties was found, esp. during storage at laboratory temperature (22 0C). Among flavonoid and polyph In this study polyphenolic antioxidant compounds in three onion varieties (red - cv. Karmen, yellow - cv. Všetana and white - cv. Ala) regarding their total content and qualitative composition of flavonoid complex were studied. Also the effects of temperature and storage period during storage of onion were studied. The total content of polyphenols was estimated spectrophotometrically with Folin-Ciocalteau´s phenolic reagent and individual flavonoid components by HPLC method using Waters TM chromatograph on Watrex 250x4 mm Sepharon SGX C18 7mm column with gradient elution. The highest amount of polyphenolic compounds was found in red variety Karmen (108,300 mg.kg-1 DM), the lowest amount in white variety Ala (26,445 mg.kg-1 DM), meanwhile the yellow variety Všetana had average content of total polyphenolic compounds 65,210 mg.kg-1 DM. An increase of total polyphenols during storage in red and yellow varieties was found, esp. during storage at laboratory temperature (22 0C). Among flavonoid and polyph (en)
Title	Total polyphenol and main flavonoid antioxidats in different onion (Allium cepa L.) varieties Total polyphenol and main flavonoid antioxidats in different onion (Allium cepa L.) varieties (en)
skos:prefLabel	Total polyphenol and main flavonoid antioxidats in different onion (Allium cepa L.) varieties Total polyphenol and main flavonoid antioxidats in different onion (Allium cepa L.) varieties (en)
skos:notation	RIV/60460709:41210/03:00005430!RIV/2004/MSM/412104/N
http://linked.open.../vavai/riv/strany	142-147
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM 412100002)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Dudjak, Jiří Faitová, Kateřina Hejtmánková, Alena Lachman, Jaromír Pivec, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Česká zemědělská univerzita v Praze / Fakulta agrobiologie, potravinových a přírodních zdrojů
http://linked.open...dnocenehoVysledku	631170
http://linked.open...ai/riv/idVysledku	RIV/60460709:41210/03:00005430
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	cibule; červené, žluté a bílé odrůdy; polyfenoly; spiraeosid; rutin; kvercetin; meziodrůdové rozdíly; změny během skladování (en)
http://linked.open.../riv/klicoveSlovo	rutin změny během skladování kvercetin polyfenoly červené žluté a bílé odrůdy cibule meziodrůdové rozdíly spiraeosid
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[D9551CE0A6FA]
http://linked.open...i/riv/nazevZdroje	Zahradnictví (Horticultural Science)
http://linked.open...in/vavai/riv/obor	GM
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2003
http://linked.open...v/svazekPeriodika	30
http://linked.open...iv/tvurceVysledku	Lachman, Jaromír Pivec, Vladimír Hejtmánková, Alena Faitová, Kateřina Proněk, David Dudjak, Jiří
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20412100002
issn	0862-867X
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	41210

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