Abstract：
:We recently described the use of ion exchange chromatography for analysis and the industrial scale preparation of pools of oligosaccharides of intermediate chain length from polysaccharides of Haemophilus influenzae type b (Hib) and Neisseria meningitidis groups A and C. These negatively charged "sized" oligosaccharides are activated and conjugated to the carrier protein (CRM197) to prepare the corresponding glycoconjugate vaccines. Characterization and accurate determination of the degree of polymerization (DP) of the pool of oligosaccharides is essential for the consistent production of these conjugate vaccines. This paper describes the colorimetric assays used for determination of the average DP of the Hib and meningococcal oligosaccharides, and the qualification of these assays achieved by size characterization of the respective oligosaccharides by use of physicochemical methods, including liquid chromatography, mass spectrometry (ionspray) and NMR spectroscopy.
journal_name
Vaccinejournal_title
Vaccineauthors
Ravenscroft N,Averani G,Bartoloni A,Berti S,Bigio M,Carinci V,Costantino P,D'Ascenzi S,Giannozzi A,Norelli F,Pennatini C,Proietti D,Ceccarini C,Cescutti Pdoi
10.1016/s0264-410x(99)00092-4subject
Has Abstractpub_date
1999-07-16 00:00:00pages
2802-16issue
22eissn
0264-410Xissn
1873-2518pii
S0264410X99000924journal_volume
17pub_type
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