Chemical and Antioxidant Charaterization of Native Corn Germplasm from Two Regions of Costa Rica: A Conservation Approach

Table 4

Antimicrobial activity expressed as a relative percentage of the diameter of the inhibition zone (mm) of corn germplasm using the Kirby–Bauer method.

Germplasm	Gram-positive bacteria		Gram-negative bacteria
	S. aureus	B. subtilis	E. coli	P. aeruginosa
	RPDIZ (%)	RPDIZ (%)	RPDIZ (%)	RPDIZ (%)
CUNA32	43.18 ± 3.90^ab	75.67 ± 8.94^a	—	—
CUNA38	46.47 ± 1.49^ab	70.19 ± 13.02^a	—	—
BTEC07	52.98 ± 13.64^ab	—	—	—
BTEC11	46.77 ± 0.71^ab	—	—	—
UCR05	60.29 ± 3.04^a	—	—	—
CUNA11	38.92 ± 6.67^ab	—	36.34 ± 17.30	—
CUNA19	46.93 ± 13.56^ab	—	—	—
CUNA24	34.42 ± 3.56^b	—	—	—
CUNA35	—	76.26 ± 7.09^a	—	—
BTEC06	—	—	—	43.71 ± 5.29^a
CUNA04	—	—	—	43.35 ± 2.76^a
CUNA44	—	—	—	30.92 ± 0.15^b
Control (+)	100%	100%	100%	100%
Control (−)	0%	0%	0%	0%

Data are expressed as mean ± SD. Different letters in the “Tukey HSD” columns indicate significant differences in each column according to the Tukey Test (). Tukey HSD: Honest Significant Difference. SD: standard deviation.