Synthesis and analysis of tocopheryl quinone and tocopherol esters with fatty acids in heated sunflower oil

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F15%3A43900669" target="_blank" >RIV/60461373:22330/15:43900669 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/ejlt.201500218" target="_blank" >http://dx.doi.org/10.1002/ejlt.201500218</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ejlt.201500218" target="_blank" >10.1002/ejlt.201500218</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis and analysis of tocopheryl quinone and tocopherol esters with fatty acids in heated sunflower oil

Popis výsledku v původním jazyce

This work focuses on degradation of ?-tocopherol and formation of ?-tocopherol degradation products in sunflower oil heated at frying temperature. We determined the content and measured the kinetics of ?-tocopherol, ?-tocopheryl quinone, ?-tocopheryl fatty acid formation in heated sunflower oil without aeration (So) and in aerated oil (air flow 20 L/h) (SoAir). During 10 h of So oil heating, the ?-tocopherol was depleted and the content of ?-tocopheryl quinone in So grew from 3 to 84 mg/kg, as did the content of tocopherol free fatty acid esters from the initial 5 to 185 mg/kg. In SoAir oil, the rate constants of formation and decomposition of tocopherol degradation products were determined. Accelerated oxidation in SoAir caused depletion of the degradation products of tocopherol after 2 h of heating. The reason for this was significant oxidation and polymerization of fatty acids in SoAir oil. The unique features of this work are the syntheses and spectral analysis of tocopherol oxidat

Název v anglickém jazyce

Synthesis and analysis of tocopheryl quinone and tocopherol esters with fatty acids in heated sunflower oil

Popis výsledku anglicky

This work focuses on degradation of ?-tocopherol and formation of ?-tocopherol degradation products in sunflower oil heated at frying temperature. We determined the content and measured the kinetics of ?-tocopherol, ?-tocopheryl quinone, ?-tocopheryl fatty acid formation in heated sunflower oil without aeration (So) and in aerated oil (air flow 20 L/h) (SoAir). During 10 h of So oil heating, the ?-tocopherol was depleted and the content of ?-tocopheryl quinone in So grew from 3 to 84 mg/kg, as did the content of tocopherol free fatty acid esters from the initial 5 to 185 mg/kg. In SoAir oil, the rate constants of formation and decomposition of tocopherol degradation products were determined. Accelerated oxidation in SoAir caused depletion of the degradation products of tocopherol after 2 h of heating. The reason for this was significant oxidation and polymerization of fatty acids in SoAir oil. The unique features of this work are the syntheses and spectral analysis of tocopherol oxidat

Druh

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

CEP obor

GM - Potravinářství

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

European Journal of Lipid Science and Technology

ISSN

1438-7697

e-ISSN

—

Svazek periodika

117

Číslo periodika v rámci svazku

neuveden k 29.2.2016

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

15

Strana od-do

0 - 15

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—