Degradation kinetics modeling of antioxidant compounds from the wastes of Mangifera pajang fruit in aqueous and choline chloride/ascorbic acid natural deep eutectic solvent

• Published in: Journal of food engineering Vol. 294; p. 110401
• Main Authors: Ling, Jordy Kim Ung, Chan, Yen San, Nandong, Jobrun
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2021
• Subjects: Antioxidant; Choline chloride/ascorbic acid natural deep eutectic solvent; Degradation; First-order kinetic; Kinetic model; Mangifera pajng; Degradation; Mangifera pajng; Kinetic model; Antioxidant; First-order kinetic; Choline chloride/ascorbic acid natural deep eutectic solvent
• ISSN: 0260-8774; 1873-5770
• DOI: 10.1016/j.jfoodeng.2020.110401

The fruit wastes of Mangifera pajang were found to exhibit excellent antioxidant capacity. However, its application can be limited by its poor stability. Therefore, this study aims to improve its stability by solubilizing them in a novel choline chloride/ascorbic acid natural deep eutectic solvent (CHCL/AA NADES) system. The degradation of the antioxidant extracts in the aqueous and NADES system under effects of temperature (25 °C, 40 °C, 60 °Cand 80 °C) and pH (3.0–8.0) were studied by modeling the degradation kinetics. For both systems, the degradation process followed the first-order kinetics. Remarkably, a lower degradation rate constant was found for the antioxidant-CHCL/AA NADES system, suggesting the ability of CHCL/AA NADES in protecting the antioxidant against extreme temperature and pH. Moreover, the half-life values for the antioxidant-CHCL/AA NADES was higher by 4.17–25% as compared to the antioxidant-aqueous system, suggesting that the CHCL/AA NADES is feasible to improve the stability of antioxidants. •CHCL/AA NADES was formulated to enhance the stability of antioxidant from M. pajang.•CHCL/AA NADES protects the antioxidants against extreme temperature and pH.•Antioxidant-CHCL/AA NADES exhibited lower rate constant and higher half-life value.