Evaluation of Cinnamomum osmophloeum Kanehira Extracts on Tyrosinase Suppressor, Wound Repair Promoter, and Antioxidant

Table 1

Measurement of C. osmophloeum extracts on antioxidant experiments. The data were expressed as a mean value in three independent experiments.

C. osmophloeum extract; (μg/mL)	DPPH scavenging (%)	Metal chelating ability (%)	Reducing power; (OD 700)
1	≤10.0	≤10.0	0.09 ± 0.00
10	≤10.0	≤10.0	0.10 ± 0.00
50	≤10.01	≤10.0	0.18 ± 0.02
100	13.23 ± 0.01	≤10.0	0.27 ± 0.03
250	38.97 ± 0.02	≤10.0	0.48 ± 0.02
Vitamin C^a	80.82 ± 0.00	—	—
EDTA^b	—	80.76 ± 0.01	—
BHA^c	—	—	0.56 ± 0.03

“—” is no testing.
^aVitamin C was used as a positive control on DPPH assay at 100 μM.
^bEDTA was used as a positive control on metal chelating ability at 100 μM.
^cBHA was used as a positive control on reducing power at 100 μM.