The aim of this study is to improve artocarpanone solubility by developing an O/W microemulsion with
the evaluation of its antibrowning effects. The chemical and physical stabilities as well as antibrowning
effects in apple juice were also evaluated. The formulation of artocarpanone microemulsion consisted of
4% w/w of ethyl butyrate, 10.67% w/w of Tween 80, 5.33% w/w of polyethylene glycol 400, and 80% w/w
of water, with a maximum solubility of artocarpanone up to 10.54 ± 0.01 mg/mL, at least 3000-folds
increase in solubility compared that in water. Encapsulating artocarpanone and ascorbic acid (VC) into
microemulsion simultaneously decreased modest artocarpanone solubility whereas improving its stability
in long-term storage. Blank, artocarpanone and artocarpanone-Vc-loaded microemulsions demonstrated
steadily during accelerated and long-term storage. Artocarpanone-Vc-loaded microemulsion
showed strong antibrowning effects in apple juice at room temperature in 24 h, suggesting that
artocarpanone-Vc-loaded microemulsion is a good antibrowning agent for apple juices