Unripe fruit of rubus fraxinifolius as a potential source of antioxidant and antielastase agent

Objective: This research aimed to examine the anti-oxidant activity, antielastase activity, and the content of total phenolic and total flavonoid of R. fraxinifolius unripe fruit. Methods: The dried unripe fruit was extracted using Soxhlet apparatus with sequence solvent: n-hexane, ethyl acetate, and methanol. Each extract was determined the anti-oxidant and antielastase activity, total phenolic, and total flavonoid content. Result: The result showed the extracts (n-hexane, ethyl acetate, and methanol) gave anti-oxidant IC50>200; 186.84; and 19.74 ppm, and the ability of elastase inhibition was 6.84+0.9%; 52.23+7.1%; and 57.81+5.5% at 100 ppm, respectively. The methanolic extract contained phenolic 202.2 mg GAE/g extract and flavonoid 43.89 mg QE/g extract. Conclusion: R. fraxinifolius unripe fruit has shown potential as a DPPH (α, α-diphenyl-β-picrylhydrazyl) radical scavenger and anti-elastase. This study provides an excellent effect to underline the importance of R. fraxinifolius unripe fruit, and it can be developed as nutricosmetics, nutraceuticals, or herbal anti-wrinkle cosmetics.