Characterization and Functionality of Sphay Dried Gum Arabic : Acomparatue Study

Abstract

Two processed A.seyal and A.senegal samples of gum arabic have been studies in order to establish the physico chemical properties and functionality of processed gum samples in comparison with unprocessed gum arabic. Some of the determined physico - chemical properties have the following values : Moisture content : Moisture content for processed A.seyal was found to be 7.3% where as that for A.senegal was 7.6% , which differe from the values reported by other authors for non-processed A.seyal gum , which were 8.5% , 12.6% , and 11.6% the value for non-processed A.senegal gum were 10.7% , 11.8% and 14.8 % . Ash content : Ash content for processed A.seyal& processed A.senegal was found to be 0.25 %and 0.34% respectivly. which differe from the values reported by other authors for non-processed gum which were , 2.74 , 2.9% , 0.7% for non-processed A.seyal and 6.5% , 2.6%, 3.9% for non processed A.senegal. Intrinsic viscosity : Intrinsic viscosity for processed A.seyal and Asenegal was found to be 11.5ml/g and 14.5ml/g respectively these values were similar to the values of non-procsessed samples which were found to be 11.4ml/g , 14.2ml/g . for non-processed A.seyal and14.6 ml/g , 16.4 ml/g for non-processed A.senegal . Specific optical rotation : A.seyal , processed sample has specific rotation ranging from +49.7 to + 50.2 . The average value was +49.9. and the value ) (3 for A.senegal , processed sample was found to be -29.2 which agrees with the values reported by other authors for non-processed sample which were +49.4 , +51 , + 54 . for A.seyal and -26 , -31.3 , -29.4 for non-processed A.senegal. Nitrogen Content : The nitrogen content for. Aseyal gum was found to be ≈ where as that for A.senegal gum was found to be 0.34% which does not differe from the values reported by other authors for non-processed gum , which were 0.13 , 0.11 and 0.33 , 0.35 respectively . Theacid equivalent weight and glucuronic acid: For processed A.seyal gum were found to be 1154 and 16.8% respectively , where as those for processed A.senegal were 1315.8 and 14.7. pH values : The pH values for processed and row gum were almost equales , hence processed dose not affect the pH value of the gum . Emulsifing Index :- The relative emulsifying abilities of processed gum does not changed by the treatments. Conductance : Spraydring processed has affected the conductance at infinite dilution for A.seyal was found to be where as that of A.senegal was Which was different from those values reported for non-processed samples which were found to be sample . for A.seyal and for A.senegal