ELNOUR, Ahmed. A. M., et al. “GUM ARABIC: AN OPTIMIZATION OF ULTRASONIC- ASSISTED EXTRACTION OF ANTIOXIDANT ACTIVITY”. Studia Universitatis Babeș-Bolyai Chemia, vol. 63, no. 3, Sept. 2018, pp. 95-116, doi:10.24193/subbchem.2018.3.08.