Fig. 2.

Analysis of β-glycosidase activity versus halitosis score. Panel A: Halitosis score was determined based on the level of odor intensity (0,1, 2 and 3) determined by the portable sulfur monitor (Tanita Breath Checker) or by the organoleptic test (Panel B). The enzymatic activity of volunteers that did not present halitosis (score zero) are represented in the dashed red boxes. Symbols represent the mean of salivary enzymatic activity of each volunteer and error bars represent the standard deviation. Measurements were performed in triplicates. The black diagonal line is the regression line fit. Panel A R² = 0.099, Panel B R² = 0.065. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)