. 2020 Aug 21;11:1301. doi: 10.3389/fphar.2020.01301

Table 1.

Percentage inhibition of mutagenicity by Obeth extract of O. bracteata in TA98 and TA100 tester strains of Salmonella typhimurium with and without S9.

Treatment	Dose/0.1 mL/plate	TA 100 (without S9)% Inhibition	TA 98 (without S9) % Inhibition	TA 100 (with S9) % Inhibition	TA 98 (with S9) % Inhibition
Co-incubation	25 µg	42.01 ± 4.25^b	23.07 ± 3.42^c	53.02 ± 5.71^c	40.40 ± 3.42^c
	50 µg	50.69 ± 4.24^b	39.92 ± 3.76^b	66.85 ± 1.66^b	50.35 ± 2.05^b
	100 µg	65.71 ± 2.48^a	50.98 ± 1.65^ab	74.48 ± 2.59^ab	60.37 ± 1.40^a
	250 µg	74.47 ± 2.51^a	58.97 ± 1.81^a	83.37 ± 1.21^a	61.51 ± 2.08^a
Pre-incubation	25 µg	49.77 ± 2.88^c	35.53 ± 2.79^c	60.91 ± 2.01^c	46.39 ± 2.45^c
	50 µg	60.51 ± 2.06^b	47.60 ± 2.76^b	70.66 ± 3.44^b	57.74 ± 1.79^b
	100 µg	75.28 ± 2.91^a	58.79 ± 1.74^a	85.01 ± 1.11^a	73.43 ± 3.45^a
	250 µg	82.30 ± 1.63^a	62.85 ± 3.33^a	91.41 ± 1.26^a	82.56 ± 2.24^a

Values are represented as Mean ± SE, level of significance p ≤ 0.05. Means with different superscripts represent significant difference among them in all groups.