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Article: Studies from Federal University add new findings in the area of chemical research.
- Article from:
- Chemicals & Chemistry
- Article date:
- April 24, 2009
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According to a study from Brazil, "Direct infusion electrospray ionization mass spectrometry in both the negative ESI(-)-MS and positive ESI(+)-MS ion modes are investigated to differentiate green and roasted Arabica coffees with different stages of ripeness (green, ripe and overripe), post-harvesting process (dry, wet and semi-wet) and coffees with different cup qualities. In the ESI(-)-MS of green coffees, ions from deprotonated fatty acids and chlorogenic acids are the most important for ripeness discrimination."
"In the ESI(+)-MS, maturity is differentiated by ions from protonated caffeine, chlorogenic acids and K+ adducts of fatty acids. To differentiate ...
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Article: Researchers from Federal University of Minas Gerais ...
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July 14, 2009 ;
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... ... and colleagues, Federal University of Minas Gerais ... Gusevskaya, Federal University of Minas Gerais ... Organometallics is: American Chemical Society, 1155 16th St ... Keywords: Metals, Federal University of Minas Gerais ...
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