Table 6.

Antibiofilm effect of extracts, essential oil of O. majorana and its monoterpene components on sensitive and resistant E. coli strains ¹.

Sample	Inhibition %
	E. coli ATCC 25922		E. coli AG100
	0.0625%	0.0312%	0.125%	0.0625%
MeOH extract	−5.77 **	55.61 *	−59.60 ns	−56.68 ns
n-hexane extract	57.79 *	64.43 ns	−13.74 *	−41.58 **
Essential oil	−104.64	–	104.16	–
	100 µM/	50 µM	100 µM	50 µM
α-terpinene	1.95 *	17.68 **	−53.71 ns	−35.98 *
γ-terpinene	34.34 **	37.80 *	−33.37 ns	−13.62 ns
terpinene 4-ol	−2.09 ***	42.36 ns	−28.19 ns	8.51 ns
sabinene	36.35 **	48.57 ns	−59.78 ns	15.40 ns
sabinene hydrate	37.93 ***	55.97 *	−42.47 ns	12.13 *
linalool	28.98 ***	49.68 ns	−0.89 *	−11.78 *
CCCP		63.37		50.14

¹ The measurements were performed in triplicate. * p < 0.05, ** p < 0.01, *** p < 0.001, ns: not significant.