Physicochemical Properties and Biological Activities of Garden Cress (Lepidium sativum L.) Seed and Leaf Oil Extracts

Table 3

Antimicrobial Activities oil extracts from garden cress seed and leaf oil extract as mean diameter of zone of inhibition against test pathogenic microbial spp.

Test pathogens	Oil extract	Concentrations of the oil extract (v/v)			Ciprofloxacin (1 µg/ml)
		1µg/ml	2µg/ml	3µg/ml
E. coli	Seed	13.50 ± 0.50cC	15.87 ± 0.40bB	15.53 ± 0.45cB	18.33 ± 0.29aA
	Leaf	13.90 ± 0.36bcB	17.90 ± 0.25aA	17.50 ± 0.45bA	18.50 ± 0.50aA
S. aureus	Seed	14.57 ± 0.40bB	14.50 ± 0.32cB	17.23 ± 0.25bA	18.50 ± 0.50aA
	Leaf	15.50 ± 0.50aB	15.23 ± 0.36bB	18.50 ± 0.55aA	18.50 ± 0.45aA
					Fluconazole (1 µg/ml)
C. albicans	Seed	9.00 ± 0.95bC	10.57 ± 0.40cC	12.57 ± 0.81bB	19.33 ± 0.76aA
	Leaf	13.50 ± 0.45aC	15.00 ± 0.50bB	18.00 ± 0.56aA	18.83 ± 0.76aA
A. Niger	Seed	7.73 ± 0.64bD	9.50 ± 0.50dC	12.87 ± 0.55bB	18.50 ± 0.76aA
	Leaf	13.50 ± 0.45aC	16.50 ± 0.60aB	18.50 ± 0.50aA	19.00 ± 0.46aA

Note: means followed by the same letter within a column were not significantly different at the 0.05 probability level based on LSD (least significance difference) t test. Small letters: significance within column; capital letters: significance across row. E. coli: Escherichia coli; S. aureus: Staphylococcus aureus.