Apoptosis of human gastric adenocarcinoma cells induced by β-ionone

Table 1 Apoptotic index (AI) of SGC-7901 cells treated by β-ionone

β-ionone	AI (%)a
(µmol/L)	24 h	48 h
0	0.15 ± 0.087	-
25	0.12 ± 0.03	0.87 ± 0.23b
50	0.47 ± 0.15	3.43 ± 1.00b
100	1.67 ± 0.53b,c	8.50 ± 19.2b,c
200	4.78 ± 1.32b,c,d	11.85 ± 3.83b,c,d

a: X experiments were performed and Y cells were counted in each experiment, b: P < 0.05, comparison between 24 h and 48 h, c: P < 0.05 compared with negative control, d: P < 0.05 as deter-mined by one-way ANOVA.