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Analysis of saccharides in beer samples by flow injection with electrospray mass spectrometry
Pierluigi Mauri1, Markus Minoggio, Paolo Simonetti
1Istituto Tecnologie Biomediche, CNR, Via Fratelli Cervi 93, 20090 Segrate, Milan, Italy. mauri@itba.mi.cnr.it
Abstract:
Saccharides in foods play important roles, as they are essential substrates for fermentation processes. In brewing, the concentration of maltooligosaccharides influences the characteristics of beers and therefore their determination is of great practical interest. Electrospray ionization mass spectrometry (ESI-MS) was applied to identify and characterise maltooligosaccharides in beer samples. The effects due to different cation concentrations and dilution of samples were studied. Furthermore, quantitative analyses of maltooligosaccharides by means of flow-injection ESI-MS (FI/ESI-MS) of 1-microL beer samples (diluted 1000-fold) are described.