ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Deciphering the interaction of galactomannan polysaccharide guar gum and bile salt sodium deoxycholate

Sagar Kumar Behera, Srinibash Mishra, and Monalisa Mohapatra

Department of Chemistry, VSS University of Technology, Burla, India

E-mail: mmohapatra@gmuniversity.ac.in

Received: 28 March 2023  Accepted: 11 June 2023

Abstract:

The interaction study of water-soluble galactomannan polysaccharide guar gum (GG) and biosurfactant bile salt may have implications in lipid digestion and food formulations. In this work, we have tried to bring almost all fundamental aspects of the interaction of guar gum and bile salt sodium deoxycholate (NaDC), and the physicochemical properties allied with their association. The critical aggregation concentration (CAC), aggregation number (N_agg), and critical micellar concentration (CMC) of GG/NaDC mixed system were calculated using fluorescence parameters of pyrene molecule and conventional conductivity data. The thermodynamic parameters of GG/NaDC system were calculated, and the association was found to be a spontaneous and feasible process. At various regions of their interaction, zeta potential and dynamic light scattering studies have been done to gain a better understanding of their interaction.

Keywords: Guar gum; Bile salt; Pyrene; Thermodynamic parameters; Aggregation; Physicochemical properties

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-02928-8

Chemical Papers 77 (10) 6147–6157 (2023)