Inulin–Niacin Conjugates: Preparation, Characterization, Kinetic and In Vitro Release Studies

Abstract

Niacin, an essential B-complex vitamin, used in the treatment of nonalcoholic fatty liver disease is the rst perceived lipid regulating medication, inhibits and reverses hepatic steatosis and in ammation in animals and liver cell cultures. Niacin shows bene cial effects on adiposity. Niacin plays an important role in DNA repair, electron transfer, one-carbon metabolism and fatty acid synthesis in cells. Natural polysaccharides with desirable chemical modi cations can be combined with vitamins for developing the supplement treatment for vitamin de ciency disorders. Modi cation of inulin was carried out by tosylation, amination and then conjugated with niacin. Structural elucidation of the derivatives and conjugates was carried out by FT-IR, 1 H NMR and SEM. Thermal behavior was investigated by TGA and DSC techniques. The release and kinetics of niacin, from the conjugate, at different pH was studied. The release was observed to be pH dependent, showing a greater release at higher pH following Korsmeyer-Peppas kinetic model. Polysaccharide based approach was used for the preparation of stable niacininulin conjugates with controllable and prolonged release of niacin. These types of conjugates may be useful as vitamin delivery systems for vitamin de ciency disorders.

In Vivo and In Vitro Biodistribution of Inulin-Tethered Boron-Doped Amine-Functionalized Carbon Dots

“…These surface-functionalized CDs were shown to be physicochemically and photochemically stable. , CDs also showed high two-photon absorption renderings, allowing fluorescence imaging with both one- and two-photon excitations on the same system. , In this study, we reported inulin covalently linked CDs to reduce toxicity. Inulin is a biocompatible natural polysaccharide containing a fructose-type structure that has uses in the pharmaceutical and culinary industries . Also, inulin is freely accessible and cannot be destroyed by enzymes in the human body because it is exogenous to the human body and can be easily changed, increasing its usefulness .…”