Mass spectrometric fragmentation patterns discriminate C1- and C4-oxidised cello-oligosaccharides from their non-oxidised and reduced forms.

Peicheng Sun,Matthias Frommhagen, Maloe Kleine Haar,Gijs van Erven,Edwin J Bakx,Willem J H van Berkel,Mirjam A Kabel

Carbohydrate Polymers（2020）

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摘要

•LPMO-generated C1- and C4-oxidised cello-oligomers have distinct MS/MS patterns.•C4-oxidised cello-oligomers showed B-/Y- and X-type fragments at the oxidised end.•Diagnostic 2,4Xn fragments were obtained for C4-oxidised cello-oligomers.•Extensive A-type cleavage was typical for C1-oxidised cello-oligomers.•Reduced and non-reduced cello-oligomers yield distinct fragmentation behaviours.

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关键词

ESI-CID-MS/MS,Mt,LPMO,PGC,RP-UHPLC,HILIC,HPAEC-PAD,NaBH4,NaBD4,RAC,Asc,SPE,FA,TFA,DP,Glc_n,Glc_n*,Glc_n#,RD-Glc_n,RD-Glc_n*

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