Uji Aktivitas Antioksidan dan Penetapan Kadar Vitamin C Ekstrak Buah Naga Merah Keunguan (Hylocereus lemairei (Hook.) Britton & Rose) Secara Spektrofotometri UV-Vis
Abstrak: The research on
antioxidant activity test and the determination of the degree of vitamin C from
fruit extracts purplish red dragon (Hylocereus lemairei (Hook.) Britton &
Rose) has been done. On this research fresh dragon fruit meat mashed with
blender and maceration methode used ethanol solvent 96% with three repetitions.
The results of maceration evaporated with rotary evaporator until viscous
extract. The test of free radical DPPH deterrent and the determination the
degree of vitamin C in extracts purplish red dragon fruit (Hylocereus lemairei
(Hook.) Britton & Rose) using vitamin C as a comparison. On the antioxidant
activity test, extract was made with various concentration i.e. 1000 µ g/mL,
1500 µ g/mL, 2000 µ g/mL, 2500 µ g/mL, 3000 µ g/mL, obtained the percentage of
antioxidant activity was 28.57 %, 34.67 %, 41.81 % , 46.13 %, and 51.78 %. On
the determination of the degree of vitamin C extract, the extract is made with
concentration 1000 µ g/mL used spectrophotometer UV-Vis showed that the degree
of vitamin C in extracts purplish red dragon fruit (Hylocereus lemairei (Hook.)
Britton & Rose) was 24.79 mg/100 g dragon fruit.
Kata Kunci: 2.2-diphenyl-1-picrylhydrazyl;
Spectrophotometer UV-Vis; Antioxidants; Dragon Fruits
Penulis: Zikra Azizah, Zulharmita,
Eki Zulfian
Kode Jurnal: jpfarmasidd170360
