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. 2018 Jul 9;23(7):1671. doi: 10.3390/molecules23071671

Table 3.

The DPPH radical scavenging assay and tyrosinase inhibition activity assay of flavonols 11a–l.

Entry Compound R1 graphic file with name molecules-23-01671-i027.jpg DPPH Radical Scavenging Assay Tyrosinase Inhibition Activity Assay
Scavenging Rate (%) a Inhibition Rate (%) b
graphic file with name molecules-23-01671-i028.jpg
1 11a H graphic file with name molecules-23-01671-i029.jpg 88.1 16.2
2 11b H graphic file with name molecules-23-01671-i030.jpg 66.5 48.4
3 11c H graphic file with name molecules-23-01671-i031.jpg 70.3 4.2
4 11d H graphic file with name molecules-23-01671-i032.jpg 55.0 c 17.1
5 11e H graphic file with name molecules-23-01671-i033.jpg 55.3 6.0
6 11f H graphic file with name molecules-23-01671-i034.jpg 53.6 4.7
7 11g Me graphic file with name molecules-23-01671-i035.jpg 92.5 11.1
8 11h Me graphic file with name molecules-23-01671-i036.jpg 68.6 16.0
9 11i Me graphic file with name molecules-23-01671-i037.jpg 80.6 18.3
10 11j Me graphic file with name molecules-23-01671-i038.jpg 81.5 d 2.7
11 11k Me graphic file with name molecules-23-01671-i039.jpg 42.1 2.0
12 10l Me graphic file with name molecules-23-01671-i040.jpg 46.4 21.2
13 α-Tocopherol 95.0
14 Arbutin 9.3

a Final concentration: 0.040 mM; b Final concentration: 0.10 mM; c Final concentration: 0.010 mM; d Final concentration: 0.020 mM.