Physicochemical Properties and Biological Activities of Garlic (Allium sativum L.) Bulb and Leek (Allium ampeloprasum L. var. Porrum) Leaf Oil Extracts

Table 3

Antimicrobial activities oil extracts from garlic bulb and leek leaf oil extracts as mean diameter of zone of inhibition against test pathogenic microbial spp.

Test pathogens	Oil extract	Concentrations of the oil extract (w/v)			Ampicillin (1 µg/ml)
		1 µg/ml	2 µg/ml	3 µg/ml
S. boyelli	Garlic	10.50 ± 0.50^bD	13.50 ± 0.45^abC	15.00 ± 0.40^bB	18.83 ± 0.29^aA
	Leek	0.00 ± 0.00^cD	10.50 ± 0.60^cC	12.93 ± 0.40^cB	18.50 ± 0.50^aA
S. pyogenes	Garlic	11.00 ± 0.50^abB	14.03 ± 0.45^aB	15.50 ± 0.40^abB	18.83 ± 0.29^aA
	Leek	11.50 ± 0.45^aD	13.10 ± 0.36^bC	16.00 ± 0.50^aB	18.33 ± 0.29^aA
					Ketoconazole (1 µg/ml)
C. albicans	Garlic	8.50 ± 0.60^aD	10.50 ± 0.55^aC	13.50 ± 0.45^aB	18.00 ± 0.50^aA
	Leek	0.00 ± 0.00^bD	10.50 ± 0.40^aC	12.50 ± 0.50^bB	17.33 ± 0.76^aA
A. niger	Garlic	0.00 ± 0.00^bD	8.00 ± 0.95^bC	11.50 ± 0.50^cB	17.83 ± 0.28^aA
	Leek	0.00 ± 0.00^bB	0.00 ± 0.00^cB	0.00 ± 0.00^dB	17.33 ± 0.23^aA

Means followed by same letter within a column were not significantly different at 0.05 probability level based on the LSD (least significant difference) test. Small letters, significance within column. Capital letters, significance across row. E. coli, Escherichia coli; S. boyelli, Shigella boyelli, S. pyogenes, Streptococcus pyogenes.