Bactericidal and anti-adhesive properties of culinary and medicinal plants against Helicobacter pylori

Table 2 Bactericidal activity of plants against Helicobacter pylori, determined using viable colony count. ‘% inhibition of growth’ indicates the percentage of bacteria that were killed by the plants, (i.e. the colonies did not grow), compared to the control.

			H pylori clinical strains
Plant name		NCTC strain	1	2	3	4	5	6
Turmeric	% inhibition of growth	100	100	100	100	100	100	100
	Minimum of time (min)	15	15	15	15	15	15	15
Ginger	% inhibition of growth	100	100	100	100	100	100	100
	Minimum of time (min)	30	30	30	30	30	30	30
Fenugreek	% inhibition of growth	0	0	0	0	0	0	0
	Minimum of time (min)	60	60	60	60	60	60	60
Cumin (small cumin)	% inhibition of growth	100	100	100	100	100	100	100
	Minimum of time (min)	30	30	30	30	30	30	30
Coriander	% inhibition of growth	0	0	0	0	0	0	0
	Minimum of time (min)	60	60	60	60	60	60	60
Chilli	% inhibition of growth	100	100	100	100	100	100	100
	Minimum of time (min)	30	30	30	30	30	30	30
Bengal quince	% inhibition of growth	0	0	0	0	0	0	0
	Minimum of time (min)	60	60	60	60	60	60	60
Columbo weed	% inhibition of growth	99.9	99.9	99.9	99.5	99.8	99.9	99.8
	Minimum of time (min)	60	60	60	60	60	60	60
Yellow-berried nightshade	% inhibition of growth	99.9	99.7	99.5	99.9	99.9	99.9	99.9
	Minimum of time (min)	60	60	60	60	60	60	60
Liquorice	% inhibition of growth	100	100	100	100	100	100	100
	Minimum of time (min)	60	60	60	60	60	60	30
Nightshade	% inhibition of growth	0	0	0	0	0	0	0
	Minimum of time (min)	60	60	60	60	60	60	60
Long pepper	% inhibition of growth	99.9	99.9	100	99.3	99.7	99.9	99.9
	Minimum of time (min)	60	60	60	60	60	60	60
Threadstem carpetweed	% inhibition of growth	99.9	99.7	99.9	99.9	99.9	99.9	99.9
	Minimum of time (min)	60	60	60	60	60	60	60
Garlic	% inhibition of growth	0	0	0	0	0	0	0
	Minimum of time (min)	60	60	60	60	60	60	60
Parsley	% inhibition of growth	99.6	99.3	99.9	99.6	99.9	99.99	99.8
	Minimum of time (min)	60	60	60	60	60	60	60
Dill	% inhibition of growth	0	0	0	0	0	0	0
	Minimum of time (min)	60	60	60	60	60	60	60
Sage	% inhibition of growth	99.9	99.9	99.7	99.5	99.9	99.9	99.9
	Minimum of time (min)	60	60	60	60	60	60	60
Oregano	% inhibition of growth	100	100	100	100	100	100	100
	Minimum of time (min)	30	30	30	30	60	30	30
Tarragon	% inhibition of growth	96.9	99.4	99.2	99.9	99.9	99.9	99.9
	Minimum of time (min)	60	60	60	60	60	60	60
Nutmeg	% inhibition of growth	95.9	95.6	99.5	99.4	99.2	96.1	98.9
	Minimum of time (min)	60	60	60	60	60	60	60
Black pepper	% inhibition of growth	0	0	0	0	0	0	0
	Minimum of time (min)	60	60	60	60	60	60	60
Cinnamon	% inhibition of growth	100	100	100	100	99.9	99.9	100
	Minimum of time (min)	60	30	30	30	60	60	60
Black caraway (Europe)/Black cumin (USA)	% inhibition of growth	100	100	100	100	100	100	100
	Minimum of time (min)	60	60	60	60	60	60	60
Borage (Starflower)	% inhibition of growth	100	100	100	100	100	100	100
	Minimum of time (min)	60	60	60	60	60	60	60
Black tea	% inhibition of growth	0	0	0	0	0	0	0
	Minimum of time (min)	60	60	60	60	60	60	60