Skip to main content
. 2018 Jul 9;23(7):1671. doi: 10.3390/molecules23071671

Table 1.

The DPPH radical scavenging assay and tyrosinase inhibition activity assay of chalcones 7a–l.

Entry Compound R1 graphic file with name molecules-23-01671-i001.jpg DPPH Radical Scavenging Assay Tyrosinase Inhibition Activity Assay
Scavenging Rate (%) a Inhibition Rate (%) b
graphic file with name molecules-23-01671-i002.jpg
1 7a H graphic file with name molecules-23-01671-i003.jpg 5.8 46.6
2 7b H graphic file with name molecules-23-01671-i004.jpg 96.0 0.0
3 7c H graphic file with name molecules-23-01671-i005.jpg 31.6 85.7
4 7d H graphic file with name molecules-23-01671-i006.jpg 56.7 0.0
5 7e H graphic file with name molecules-23-01671-i007.jpg 20.5 30.3
6 7f H graphic file with name molecules-23-01671-i008.jpg 11.4 5.1
7 7g Me graphic file with name molecules-23-01671-i009.jpg 1.0 40.7
8 7h Me graphic file with name molecules-23-01671-i010.jpg 94.0 18.7
9 7i Me graphic file with name molecules-23-01671-i011.jpg 6.9 80.3
10 7j Me graphic file with name molecules-23-01671-i012.jpg 48.8 0.0
11 7k Me graphic file with name molecules-23-01671-i013.jpg 0.1 22.5
12 7l Me graphic file with name molecules-23-01671-i014.jpg 4.2 7.2
13 Lanceolin 94.2 c
14 α-Tocopherol 95.0
15 Arbutin 9.3

a Final concentration: 0.040 mM; b Final concentration: 0.10 mM; c Tanimoto et al. [1].