Table 2. Surface tension and contact angle measurement.

	surface tensiona (mN/m ± s.d.)	contact anglea (° ± s.d., 50% solution in acetone)
rosemary oil	29.8 ± 0.09 B	22.7 ± 1.7 B
1,8-cineole	29.2 ± 0.05 D	19.5 ± 1.6 C
camphor		58.3 ± 2.4 A
1,8-cineole + camphorb	30.0 ± 0.03 A	24.1 ± 1.0 B
(full mixture) – 1,8-cineolec	29.3 ± 0.07 C	23.9 ± 1.0 B

^aWithin each column means followed different letters are statistically different at P = 0.05 (Tukey’s test).

^bThe ratio of the mixture of 1,8-cineole + camphor was 63:37 (w:w), their natural ratio in rosemary oil.

^cFull mixture is the mixture of all rosemary essential oil constituents occurring at more than 1% concentration in the oil.