Optimization of Conventional Extraction for Tyrosinase Inhibition and Modern Extraction for Elastase Inhibition of 70% Ethanol Extract of Litsea oppositifolia Stems
Informasi
JurnalInternational Journal of Agriculture and Biology
PenerbitFriends Science Publishers
Volume & EdisiVol. 35
Halaman -
Tahun Publikasi2026
ISSN15608530
Jenis SumberScopus
Abstrak
Litsea oppositifolia Gibbs, an Indonesian plant with significant antioxidant properties, shows potential for combating UV-induced skin aging. Still, crucial scientific data regarding its characteristics and optimal extraction for inhibiting elastase and tyrosinase enzymes remain limited. Therefore, the present study aimed to conduct a microscopic characterization of the L. oppositifolia stem, compare the efficacy of conventional and modern extraction techniques, and evaluate the potential of the resulting ethanolic extracts as dual inhibitors of elastase and tyrosinase for anti-photoaging applications. Microscopic and Scanning Electron Microscopy analyses of the L. oppositifolia stem successfully identified key characteristic fragments, including sclereids, fibers, and calcium oxalate crystals. Among the four extraction methods evaluated, reflux provided the highest extraction yield (5.22 ± 0.10%). In contrast, maceration yielded the highest total flavonoid content (2.80 ± 0.42 mg equivalent/g extract), suggesting that high-temperature methods may degrade thermolabile compounds. Furthermore, the macerated extract demonstrated a dose-dependent but weak inhibitory effect against tyrosinase, achieving only 16.46 ± 1.00% inhibition at 600 μg/mL, which was substantially lower than the kojic acid positive control (IC50= 5.55 μg/mL). Similarly, the ultrasound-assisted extraction showed modest, dose-dependent elastase inhibition, reaching 15.63 ± 0.08% at 60 μg/mL, significantly weaker than the quercetin positive control (IC50= 4.88 μg/mL). These findings indicate that although L. oppositifolia exhibits relatively low anti-tyrosinase and anti-elastase activity, it still demonstrates potential as a natural candidate for anti-aging and skin pigmentation management, with maceration identified as the most effective extraction method. © 2026 The Authors. International Journal of Agriculture and Biology published by Friends Science Publishers, Faisalabad, Pakistan. This is an open access article under the terms of the Creative Commons Attribution License, which permits non-commercial use, distribution and reproduction in any medium, provided the original work is properly cited.
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