We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Permethylation Linkage Analysis Techniques for Residual Carbohydrates.
- Authors
Neil Price
- Abstract
Abstract Permethylation analysis is the classic approach to establishing the position of glycosidic linkages between sugar residues. Typically, the carbohydrate is derivatized to form acid-stable methyl ethers, hydrolyzed, peracetylated, and analyzed by gas chromatography-mass spectrometry. The position of glycosidic linkages in the starting carbohydrate are apparent from the mass spectra as determined by the location of acetyl residues. The completeness of permethylation is dependent upon the choice of base catalyst and is readily confirmed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry mass spectrometry. For the permethylation of β-cyclodextrin, Hakomori dimsyl base is shown to be superior to the NaOH–dimethyl sulfoxide system, and the use of the latter resulted in selective under-methylation of the 3-hydroxy groups. These techniques are highly applicable to residual carbohydrates from biofuel processes.
- Subjects
GLUCOSE; CATALYSTS; GLYCOMICS; THERMAL desorption
- Publication
Applied Biochemistry & Biotechnology, 2008, Vol 148, Issue 1-3, p271
- ISSN
0273-2289
- Publication type
Academic Journal
- DOI
10.1007/s12010-007-8044-8