N2 - Acoustical attenuation spectra in the frequency range 12 kHz - 2 GHz and nonequilibrium time domain measurements are briefly reviewed for aqueous solutions of various mono- and disaccharides as well as alkyl glycosides. Several relaxation regimes emerge with relaxation times between 10-11 s and 103 s. In this paper relaxation terms reflecting conformational changes are discussed, particularly mutarotation (103 s), chair-chair ring inversion (1 μs), two modes of pseudorotation (100 ns, 10 ns), disaccharide ring isomerisation (10 ns), and exocyclic side group rotation (1 ns). L1 - http://journals.pan.pl/Content/107556/PDF/111.pdf L2 - http://journals.pan.pl/Content/107556 PY - 2010 IS - No 4 EP - 738 DO - 10.2478/v10168-010-0054-9 KW - acoustical spectroscopy KW - non-equilibrium spectroscopy KW - carbohydrate solutions A1 - Kaatze, Udo PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 35 DA - 2010 T1 - Acoustical Spectroscopy of Carbohydrate Aqueous Solutions: Saccharides; Alkyl Glycosides; Cyclodextrins. Part I. Conformer Variations SP - 715 UR - http://journals.pan.pl/dlibra/publication/edition/107556 T2 - Archives of Acoustics