Table 2: In vitro comparison of the effect of ethanolic extracts of propolis collected in Santiago de Chuco in the summer and autumn versus 96% ethanol on the growth of Streptococcus mutans ATCC 25175.

- Inhibition Halo (mm)
Summer Autumn Negative Control (96% Ethanol)
Mean 18.2 26.4 0.0
SD 1.8 2.6 0.0
ANOVA: F 332.09
p 0.000
Dunnett’s a a b

Source: Data provided by the author.