Abstract
Abstract Scrutiny of IR spectra of the anomeric mixtures of maltose has disclosed that α− and β−maltose, 1 and 2, exhibit characteristic absorption bands at 750±10 and 910±10 cm−1 respectively. The intensity ratio of vibration peaks at 850±110 and 780±0 cm−1 grows up to 1.05 with the proportional increments of 1. These are of utility in the qualitative assessment of the anomeric composition of maltose. Furthermore, a 13C NMR method for quantifying 1 and 2 was established on a thorough investigation including solvent selection, spin-lattice relaxation time (T1) determination, NOE suppressing, and the dependence of the accuracy on concentration and time. This method is convenient, accurate, and much quicker when compared to the previous methods.
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