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. 2024 Jul 4;25(13):7365. doi: 10.3390/ijms25137365

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© 2024 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Tyrosinase inhibitory activity of ethyl acetate extracts. DOPA chrome produced was evaluated by measuring absorbance at 492 nm. (A) Absorbance when tyrosinase was treated with C. tuberculostearicum broth ethyl acetate extract; bars: standard deviation (SD), *** p < 0.001. (B) Gifu Anaerobic Medium (GAM) plate extract showing no inhibitory activity to tyrosinase. Control: tyrosinase treated with water (negative control); HA: tyrosinase treated with 2 mM homogentisic acid (positive control); bars: standard deviation (SD), *** p < 0.001.