Table 1.

Effects of the phenolics 1–3, 7 on the proliferation of rat osteoblast cells after 48 h, as determined by MTT assay.

Concentrations (μg/mL)	Cell Viability (%)
	1	2	3	7	Positive Control
0	101.73 ± 6.54	104.55 ± 8.78	103.29 ± 10.85	101.29 ± 9.85	101.34 ± 13.23
3.125	158.43 ± 15.44 *	111.75 ± 12.19 *	163.99 ± 10.50 *	107.99 ± 10.50	107.21 ± 9.56
6.25	181.54 ± 8.19 *	125.07 ± 10.23 *	171.45 ± 15.44 *	111.45 ± 11.44 *	115.25 ± 14.14 *
12.5	208.88 ± 12.95 *	129.13 ± 8.19 *	186.90 ± 16.78 *	116.90 ± 9.78 *	169.32 ± 16.00 *
25	314.67 ± 21.48 *	134.23 ± 11.97 *	214.22 ± 20.60 *	121.22 ± 12.60 *	197.66 ± 16.57 *
50	228.94 ± 11.58 *	125.76 ± 11.60 *	175.73 ± 16.59 *	115.73 ± 8.59 *	153.23 ± 16.65 *

Note: * p ˂ 0.05 vs. negative control.