A novel methylation derivatization method for δ<sup>18</sup>
O analysis of individual carbohydrates by gas chromatography/pyrolysis-isotope ratio mass spectrometry
作者:Marco M. Lehmann、Maria Fischer、Jan Blees、Michael Zech、Rolf T. W. Siegwolf、Matthias Saurer
DOI:10.1002/rcm.7431
日期:2016.1.15
The oxygen isotope ratio (δ18O) of carbohydrates derived from animals, plants, sediments, and soils provides important information about biochemical and physiological processes, past environmental conditions, and geographical origins, which are otherwise not available. Nowadays, δ18O analyses are often performed on carbohydrate bulk material, while compound‐specific δ18O analyses remain challenging
Cleavage of interglycosidic linkages in per(trimethylsilyl)ated and permethylated carbohydrates with iodotrimethylsilane
作者:Susumu Honda、Tsunehiko Ichii、Kazuaki Kakehi
DOI:10.1016/0008-6215(83)88138-5
日期:1983.4
Abstract Iodotrimethylsilane in carbon tetrachloride cleaves interglycosidiclinkages in per(trimethylsilyl)ated disaccharides to give iodinolysis products that may be readily hydrolyzed to component monosaccharides. The cleavage rate is dependent on the type of interglycosidiclinkage, and is in the order (1→4) (1→2) (1→3) (1→6) for derivatives of β-linked glucobioses. This iodinolysis reagent is