Abstract
In this paper, we present the spectroscopic description (by the means of UATR-FTIR spectroscopy) for four naturally occurring bile acids, namely lithocholic acid (LC), taurocholic acid sodium salt hydrate (TC), taurodeoxycholic acid sodium salt hydrate (TDC) and chenodeoxycholic acid (CDC), as well as their thermal behaviour in dynamic oxidative atmosphere, by TG/DTG/HF means. It was shown that all samples have a good thermal stability, favourized by the presence of cholan-24-oic structural moiety in all samples, as well as the solid-state structure (intermolecular H-bondings for the carboxylic acids CDC and LC and saline structures for TDC and TC, respectively). These data are simple, but of great interest in identifying the presence of these compounds by fast, reproducible and precise instrumental techniques in complex mixtures, such as biliary stones.
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This work was supported by a grant financed by the University of Medicine and Pharmacy “Victor Babes” Timisoara (Grant PIII-C3-PCFI-2016/2017, acronym STONES).
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Ledeti, I., Pusztai, A.M., Murariu, M. et al. Comparative instrumental investigations of some bile acids. J Therm Anal Calorim 134, 1345–1350 (2018). https://doi.org/10.1007/s10973-018-7163-5
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DOI: https://doi.org/10.1007/s10973-018-7163-5