Extraction of antioxidant from betel nut and ginger
Antioxidant from betel nut and ginger were extracted by using 95% ethanol. Ratio of ground
sample and ethanol was 1:2 (w/v). The microwave was carried out at 810 watt for 30 min.
The extracts were obtained by filtration the mixture through a Whatman No.1 filter paper
using aspirator pump. The betel nut or ginger extract was used to include in dragon fruit peel
extract for study of stability enhancement.