Comparative study of methods for producing gum arabic powder and the impact of DIC treatment (instant controlled pressure drop) on the properties of the product |
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| Authors: | Duc Quang Nguyen Sabah Mounir Karim Allaf |
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| Affiliation: | 1. Laboratory of Engineering Science for Environment (LaSIE) – UMR-CNRS, Pole Science and Technology, University of La Rochelle, La Rochelle, France;2. Heat Engineering Department, School of Heat Engineering and Refrigeration, Hanoi University of Science and Technology, Hanoi, Vietnam;3. Food Science Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt |
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| Abstract: | In this study, gum arabic powder was produced according to four methods by inserting a restructuring stage by DIC treatment (instant controlled pressure drop) in the classic process of grinding and spray drying. Properties of the final product were compared, and the results show that DIC treatment enables to control and improve the properties of the powder. The DIC treatment can cause a controlled increase in the tapped bulk density, filling rate, compressibility, porosity; and a reduction in interstitial air volume and the loose bulk density. It also facilitated the subsequent grinding and intensified the drying kinetics. The impacts of pressure and DIC treatment time were examined. Pressure was the strongest factor influencing the properties of the gum arabic powder. Selecting an optimal pressure and treatment time plays a decisive role in controlling the properties of powders. |
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| Keywords: | DIC treatment autovaporization spray drying gum arabic powder properties |
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