Fig. 1. Schematic diagram of extraction procedure, antioxidant activity and melanin synthesis test of Annona muricata.
Fig. 2. Standard curve and total polyphenol content of Fr. 7 and Fr. 8 in silica chromatography with hexane fraction.
Fig. 3. LC-MS spectrum of Fr. 7 and Fr. 8. LC-MS spectrum was analyzed by the Agilent 6,100 Series LC/MS. Peaks were confirmed that the molecular weights are 617 and 619.
Fig. 4. IR spectrums of Fr. 7 and Fr. 8. IR spectrum was analyzed by the NICOLET iS10.
Fig. 5. The effect of AMME and treatment groups (E.A. Fr., Hexane. Fr., Fr.7 and Fr.8) on scavenging activity of DPPH radical.
Fig. 6. The effect of AMME and treatment groups (E.A. Fr., Hexane. Fr., Fr. 7, Fr. 8) on reducing power.
Fig. 7. Effects of AMME and treatment groups (E.A. Fr. and Hexane. Fr.) on tyrosinase activity.
Fig. 8. Hexane fraction of AMME on cytotoxicity.
Fig. 9. Effect of hexane fraction of AMME on melanin synthesis by DOPA-oxidation using tyrosinase.
Fig. 10. Effect of Fr. 8 in silica chromatography with hexane fraction on melanin synthesis in B16F1 Cells.
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