Iranian Research Organization for Science and Technology (IROST) Innovative Food Technologies 2783-350X 1 4 2014 08 23 Characterization of some physicochemical and gelling properties of Persian gum Characterization of some physicochemical and gelling properties of Persian gum 13 27 47 10.22104/jift.2014.47 FA Somayeh Rahimi PhD Graduated in Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University, Tehran Soleiman Abbasi Associate Professor, Department of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University, Tehran Journal Article 2014 03 01 Persian gum is a type of exudate gums which naturally secretes from the barks of mountain almond trees (<em>Amygdalus scoparia</em> Spach). In this research, firstly, the gums collected from two provinces (Fars and Eastern Azarbayjan forests in Iran) were categorized at 4 levels based on color and powdered. Then, some of its physicochemical (pH, moisture, protein, fat, minerals, specific rotation, and so on) and gelling properties (least gelation concentration, hot/cold water insoluble gel, water absorption capacity, solubility) were investigated. Our findings showed that Persian gum was an acidic gum (pH=4.4±0.02), with moderate moisture (8.8±0.30% w/w), low protein (0.20±0.006% w/w) and fat (0.35±0.18% w/w) contents. Its specific rotation was levorotatory and by increasing the concentration (0.1% to 0.9% w/v) the surface tension decreased. The water absorption capacity and cold water insoluble gel of Persian gum were 12.65±0.38 g/g and 71.28±0.26 % w/w, respectively. Persian gum is a type of exudate gums which naturally secretes from the barks of mountain almond trees (<em>Amygdalus scoparia</em> Spach). In this research, firstly, the gums collected from two provinces (Fars and Eastern Azarbayjan forests in Iran) were categorized at 4 levels based on color and powdered. Then, some of its physicochemical (pH, moisture, protein, fat, minerals, specific rotation, and so on) and gelling properties (least gelation concentration, hot/cold water insoluble gel, water absorption capacity, solubility) were investigated. Our findings showed that Persian gum was an acidic gum (pH=4.4±0.02), with moderate moisture (8.8±0.30% w/w), low protein (0.20±0.006% w/w) and fat (0.35±0.18% w/w) contents. Its specific rotation was levorotatory and by increasing the concentration (0.1% to 0.9% w/v) the surface tension decreased. The water absorption capacity and cold water insoluble gel of Persian gum were 12.65±0.38 g/g and 71.28±0.26 % w/w, respectively. https://jift.irost.ir/article_47_7b51e60fd57f033d14e060688e62027a.pdf