Table 3.

Fractionation pattern of antibacterial agents produced by Rheum officinalis, using column chromatography, and their effect against C. jejuni NCTC11168.

Fraction no.	Inhibited zone (mm)
1	0.00
2	0.00
3	35 ± 0.00
4	33.3 ± 0.05
5	36.4 ± 0.11
6	0.00
7	0.00
8	0.00
9	0.00
10	0.00
11	32.1 ± 0.00
12	32.2 ± 0.00
13	37.7 ± 0.00
14	38.2 ± 0.00
15	31.2 ± 0.00
16	0.00
17	0.00
18	0.00
19	42.3 ± 0.1
20	39.1 ± 0.00
21	39.1 ± 0.00
22	39.3 ± 0.00
23	39.46 ± 0.15
24	0.00