Rapid analysis of caffeine in various coffee samples employing direct analysis in real-time ionization-high-resolution mass spectrometry

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F12%3A43894787" target="_blank" >RIV/60461373:22330/12:43894787 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s00216-012-5820-2" target="_blank" >http://dx.doi.org/10.1007/s00216-012-5820-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00216-012-5820-2" target="_blank" >10.1007/s00216-012-5820-2</a>

Result language

angličtina

Original language name

Rapid analysis of caffeine in various coffee samples employing direct analysis in real-time ionization-high-resolution mass spectrometry

Original language description

The development and use of a fast method employing a direct analysis in real time (DART) ion source coupled to high-resolution time-of-flight mass spektrometry (TOFMS) for the quantitative analysis of caffeine in various coffee samples has been demonstrated in this study. A simple sample extraction procedure employing hot water was followed by direct, high-throughput ({1 min per run) examination of the extracts spread on a glass rod under optimized conditions of ambient mass spectrometry, without any prior chromatographic separation. For quantification of caffeine using DART-TOFMS, an external calibration was used. Isotopically labeled caffeine was used to compensate for the variations of the ion intensities of caffeine signal. Recoveries of the DART-TOFMS method were 97% for instant coffee at the spiking levels of 20 and 60 mg/g, respectively, while for roasted ground coffee, the obtained values were 106% and 107% at the spiking levels of 10 and 30 mg/g, respectively. The repeatabilit

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GM - Food industry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

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

Name of the periodical

Analytical and Bioanalytical Chemistry

ISSN

1618-2642

e-ISSN

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Volume of the periodical

403

Issue of the periodical within the volume

10

Country of publishing house

DE - GERMANY

Number of pages

7

Pages from-to

2883-2889

UT code for WoS article

000305519400012

EID of the result in the Scopus database

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