Physicochemical Characterization of Combretumglutinosum (Habeil) Gum
Journal Title: Scholars Journal of Arts, Humanities and Social Sciences - Year 2017, Vol 5, Issue 2
Abstract
Twenty seven authentic samples of Gum Habeil were collected from bark of Combretumglutinosum trees in Blue Nile State - Sudan. Various physicochemical methods, differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FT-IR) were applied to characterize this type of gum. Physicochemical analysis exhibited that the average values of Moisture, Ash, pH, Water Holding Capacity, Refractive index, equivalent conductivity, acid equivalent weight , total uronic acid of the gum , Nitrogen and Protein content are 9.88%, 4.32 %, 4.79, 63.03 %, 1.29 , 354.11sg-1cm2, 1291.71, 15.54 %, 0.198 % and 1.316 % respectively. Intrinsic viscosity of freeze dried soluble part ranged from 0.630 to 0.839 dl / g with an average value of 0.691 dl / g, while Intrinsic viscosity of freeze dried deacetylated gum ranged from 1.09 to 1.390 with an average value 1.33 dl / g respectively. Gum Habeil contained a relatively high quantity of calcium, and magnesium, however, unexpected low quantity of sodium ion (3.53x10-3 % w/w) was detected. For the rest of the elements Co, Ni, Cr, Zn, Mn, Cu and Fe are of trace values. SEM analysis suggested that the crude gum has irregular particle size, while the soluble part fraction and deacetylated gum were found to be fibrilar. The glass transition temperature of the gum were observed from 30.43 to 46.54 oC by DSC. The essential functional groups such as (–OH), (CH3CO–), (–COO–), and (CH3–) were recorded at 3410, 1740, 1634, and 1443 cm-1 respectively. Keywords: Combretumglutinosum, Gum Habeil, Morphological and SEM.
Authors and Affiliations
M. H. Awad, Nouri M. A. Soleiman
Keywords
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