A high optical density holographic notch filter in combination with a single‐grating spectrograph was used to increase the spectral range for backscattered Raman optical activity (ROA) measurements of biological molecules in aqueous solution towards lower wavenumber. ROA spectra of D‐galactose, D‐maltose and laminarin starting at ca. 350 cm−1 are presented as first examples. An ROA couplet observed at 427 ± 10 cm−1 in the spectra of D‐maltose, D‐cellobiose and laminarin appears to reflect the configuration of glycosidic links in di‐ and poly‐saccharides.
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Bell et al. (1993) studied this question.
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