Fast gradient HPLC/MS separation of phenolics in green tea to monitor their degradation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39910795" target="_blank" >RIV/00216275:25310/17:39910795 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0308814617309172" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0308814617309172</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.foodchem.2017.05.133" target="_blank" >10.1016/j.foodchem.2017.05.133</a>
Alternative languages
Result language
angličtina
Original language name
Fast gradient HPLC/MS separation of phenolics in green tea to monitor their degradation
Original language description
The degradation of catechins and other phenolics in green tea infusions were monitored using fast HPLC/MS separation. The final separation was performed within 2.5 min using Ascentis Express C18 column (50 mm x 2.1 mm i. d.) packed with 2 mu m porous shell particles. Degradation was studied in relation to the temperature of water (70, 80, 90 degrees C) and the standing time of the infusion (up to 6 h). Along with chromatographic separation, the antioxidant properties of the infusions were monitored using two spectrophotometric methods. During staying of green tea infusion, the degradation of some catechins probably to gallic acid was observed. Finally, the influence of tea bag storage on antioxidant properties of green tea was evaluated. Rapid degradation of antioxidants after 3 weeks was observed. The principal component analysis, factor analysis and discriminant analysis were used for the statistical evaluation of obtained experimental data.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Food Chemistry
ISSN
0308-8146
e-ISSN
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Volume of the periodical
237
Issue of the periodical within the volume
December
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
471-480
UT code for WoS article
000406199900057
EID of the result in the Scopus database
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