> top > docs > PubMed:4053093 > annotations

PubMed:4053093 JSONTXT

Annnotations TAB JSON ListView MergeView

sentences

Id Subject Object Predicate Lexical cue
TextSentencer_T1 0-100 Sentence denotes Mass spectrometry of oligosaccharides by chloride-attachment reactions: the origin of fragment loss.
TextSentencer_T2 101-262 Sentence denotes The direct exposure, negative chemical ionisation, chloride-attachment mass spectrometry of trehalose and sucrose gave abundant chloride-attached molecular ions.
TextSentencer_T3 263-410 Sentence denotes The same feature was observed when these sugars were subjected to fast-atom bombardment (f.a.b.) in a glycerol matrix containing ammonium chloride.
TextSentencer_T4 411-497 Sentence denotes No characteristic fragment ion was found when trehalose was analysed by either method.
TextSentencer_T5 498-708 Sentence denotes In contrast, sucrose gave intense chloride-containing fragments, arising by glycosidic cleavage, when analysed by the first method, whereas such cleavage was not detectable by f.a.b.-ammonium chloride analysis.
TextSentencer_T6 709-956 Sentence denotes However, the mass-analysed ion kinetic energy (m.i.k.e.) spectra of the (M + Cl)- ions from either trehalose and sucrose, generated under f.a.b.-ammonium chloride conditions, showed glycosidic cleavage reactions in addition to a large loss of HCl.
TextSentencer_T7 957-1142 Sentence denotes These cleavage reactions might be attributed to SN2-like reactions on the acetal carbon atom and to base-induced eliminations, and they were enhanced by collision-induced dissociations.
TextSentencer_T8 1143-1352 Sentence denotes However, the relative abundance of such glycosidic cleavages from the ionic state would be too weak to explain the presence of the large chloride-containing fragments in the direct exposure spectra of sucrose.
TextSentencer_T9 1353-1455 Sentence denotes Thus, these ions were mainly produced by a thermal cleavage followed by chloride-attachment reactions.
T1 0-100 Sentence denotes Mass spectrometry of oligosaccharides by chloride-attachment reactions: the origin of fragment loss.
T2 101-262 Sentence denotes The direct exposure, negative chemical ionisation, chloride-attachment mass spectrometry of trehalose and sucrose gave abundant chloride-attached molecular ions.
T3 263-410 Sentence denotes The same feature was observed when these sugars were subjected to fast-atom bombardment (f.a.b.) in a glycerol matrix containing ammonium chloride.
T4 411-497 Sentence denotes No characteristic fragment ion was found when trehalose was analysed by either method.
T5 498-708 Sentence denotes In contrast, sucrose gave intense chloride-containing fragments, arising by glycosidic cleavage, when analysed by the first method, whereas such cleavage was not detectable by f.a.b.-ammonium chloride analysis.
T6 709-956 Sentence denotes However, the mass-analysed ion kinetic energy (m.i.k.e.) spectra of the (M + Cl)- ions from either trehalose and sucrose, generated under f.a.b.-ammonium chloride conditions, showed glycosidic cleavage reactions in addition to a large loss of HCl.
T7 957-1142 Sentence denotes These cleavage reactions might be attributed to SN2-like reactions on the acetal carbon atom and to base-induced eliminations, and they were enhanced by collision-induced dissociations.
T8 1143-1352 Sentence denotes However, the relative abundance of such glycosidic cleavages from the ionic state would be too weak to explain the presence of the large chloride-containing fragments in the direct exposure spectra of sucrose.
T9 1353-1455 Sentence denotes Thus, these ions were mainly produced by a thermal cleavage followed by chloride-attachment reactions.