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. 2021 Feb 3;10(2):315. doi: 10.3390/foods10020315

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© 2021 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 (http://creativecommons.org/licenses/by/4.0/).

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The enzymes inhibitory activities of the P. frutescens leaf extract and its fractions. (A) The inhibition ratio of α-glucosidase incubated with different concentrations of samples; (B) the IC₅₀ values of different samples for α-glucosidase inhibition; (C) the inhibition ratio of acetylcholinesterase incubated with different concentrations of samples; (D) the IC₅₀ values of different samples for acetylcholinesterase inhibition; (E) the inhibition ratio of tyrosinase incubated with different concentrations of samples; (F) the IC₅₀ values of different samples for tyrosinase inhibition. ND = not detected; CE = crude extract; PE = petroleum ether fraction; CF = chloroform fraction; EtOAc = ethyl acetate fraction; n-BuOH = n-butanol fraction; AQ = aqueous phase residue. Bars with different letters indicate a significant difference (p < 0.05).