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. 2022 Apr 26;37(1):1120–1195. doi: 10.1080/14756366.2022.2061966

Table 23.

Structure and activity of tannin against tyrosinase.

Structure Name IC50 (μM) Ref.
Inline graphic
(2R, 3S)- 3′, 5′-Dimethoxy gallocatechin
47.33a, 35.79b
Yang et al.152
Inline graphic
Epicatechin
73.88a, 48.98b
Yang et al.152
Inline graphic
Catechin
65.26a, 42.71b
Yang et al.152
Inline graphic
Gallocatechin
41.96a, 30.11b
Yang et al.152
graphic file with name IENZ_A_2061966_ILG0171_B.jpg Potenserin C 16.53a, 2.63b Yang et al.152
Inline graphic
Gallocatechin-(4′O → 7)-epigallocatechin
18.55a, 6.62b
Yang et al.152
Inline graphic
Bis-6,8′-catechinylmethane 
30.56a, 12.26b
Yang et al.152
Inline graphic
Bis-8,8′-catechinylmethane
33.88a, 15.11b
Yang et al.152
graphic file with name IENZ_A_2061966_ILG0175_B.jpg Epicatechin-(4β→8)-catechin - Procyanidin B-1 >346a,b Momtaz et al.154
Inline graphic
(−)-Epicatechin-(4β→8)- (−)-epicatechin
Procyanidin B-2

Fujimaki et al.153
Inline graphic
Catechin (4α → 8) catechin - procyanidin B-3
39.09a, 25.49b
Yang et al.152
graphic file with name IENZ_A_2061966_ILG0178_B.jpg Catechin (4α → 8) epicatechin - procyanidin B-4 37.22a, 21.76b Yang et al.152
Inline graphic
epicatechin-(4β→8, 2β→O→7)-epicatechin-(4β→8)-epicatechin
nd
Fujimaki et al.153
Inline graphic
Phloroglucinol
92.8 μg/mL
Kang et al.156
Inline graphic
Eckstolonol
126.0 μg/mL
Kang et al.156
graphic file with name IENZ_A_2061966_ILG0182_B.jpg Eckol 33.2 μg/mL Kang et al.156
Inline graphic
Phlorofucofuroeckol A
177.0 μg/mL
Kang et al.156
graphic file with name IENZ_A_2061966_ILG0184_B.jpg Dieckol 2.16 μg/mL Kang et al.156

aL-tyrosine.bL-DOPA.