Enzymatically digested oligosaccharides of kappa-carrageenans were separated on a porous graphitic carbon (PGC) column and characterised on-line by electrospray ionisation mass spectrometry (ESI-MS). Two different developing ions were applied. Among them ammonium hydrogencarbonate showed more eluting power as it should on normal anion-exchange stationary phases. The oligosaccharides were detected by ESI-MS as fully deprotonated oligosaccharides.
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| http://dx.doi.org/10.1016/j.chroma.2007.02.023 | DOI Listing |
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