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Acacia gum polysaccharide based hydrogel wound dressings: Synthesis, characterization, drug delivery and biomedical properties

Singh, Baljit, Sharma, Sushma, Dhiman, Abhishek
Carbohydrate polymers 2017 v.165 pp. 294-303
Acacia, Fourier transform infrared spectroscopy, X-ray diffraction, absorption, antioxidants, atomic force microscopy, differential scanning calorimetry, drugs, gum arabic, histology, hydrocolloids, mechanical properties, models, nuclear magnetic resonance spectroscopy, permeability, polymers, scanning electron microscopy, thermogravimetry, tissue repair
Keeping in view the importance of polysaccharide gums for wound care, in the present article, an attempt has been made to explore antioxidant nature of gum acacia in designing hydrogel wound dressing to improve its wound healing potential. These polymers were prepared by using acacia gum-polyvinylpyrollidone/carbopol and were characterized by 13C NMR, FTIR, SEM, AFM, cryo-SEM, XRD, TGA, DSC and elemental analysis techniques. Some important biomaterial properties of wound dressings such as wound fluid absorption, haemo-compatibility, bioactive assessment, gaseous/water/microbial permeability, mechanical properties, bio-adhesion, drug release, and histology of wound healing were also determined. Hydrogel wound dressings were found non-haemolytic, antioxidant and mucoadhesive in nature. Release of drug occurred through non-Fickian diffusion mechanism and release profile best fitted in Higuchi model.