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<div align="center"><font size=5><b>Lunes 24 de setiembre -
</font><font size=5 color="#FF0000">14</font><font size=5> hs<br><br>
</b>Aula de Seminarios INQUIMAE-DQIAQF (3º piso Pab. II) <br><br>
<br>
</font><font size=6><b>Prof. Marcos N. Eberlin<br>
</font><font size=4><i>Laboratório ThoMSon de Espectrometria de
Massas<br>
Instituto de Química - Universidade Estadual de Campinas, SP, Brasil<br>
</i></font><font size=6> <br><br>
<br>
</font><font size=5>"ESI-MS and MALDI-MS Fingerprinting:
Classification, Adulteration and Aging of Food, Cosmetics and Medicinal
Products "<br><br>
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Abstract:<br>
With the advent of the very soft ESI and MALDI techniques, mass
spectrometry is now able to provide, for mixture analysis, nearly a
single ion for each (semi)polar analyte. This ‘one ion: one component’
matching in addition to the high speed, sensitivity and selectivity that
only MS can offer makes ESI-MS and MALDI-MS very powerful techniques for
the typification of chemical mixtures of different compositions based on
<i>natutal chemotaxomonic markers</i>. MALDI-MS peptide mass
fingerprintings for protein analysis in proteomics and direct infusion
ESI-MS fingerprintings of crude oils in petroleomics have already been
used widely for reliable characterization. But this successful approach
could also be extended to many other areas. In this talk, we will show
examples of the use of MALDI-MS and direct infusion ESI-MS
fingerprintings for the classification, adulteration and aging of honey,
propolis, plant extracts, fruit juices, natural versus transgenic beans,
whisky, wine, beer, brazilian cachaça (versus rum), phyto-therapeutic
products, coffee, snake venoms, perfumes, vegetable oils, cosmetic oils,
olive oil, chocolates, gasoline, biodiesel, and meats in general. The use
of a technique recently developed in our laboratory, that is desorption
sonic spray ionization (DeSSI), for ‘chromatography-free’, ‘sample
preparation-free’ and ‘high voltage-free’ ambient mass spectrometry
fingerprintings will also be illustrated.
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