Table 1.

Acidogenic potential of biofilms (means ± standard deviation) over 30 min of fermentation of glucose.

Variables	No sugar	G+F	Sucrose	Starch	Starch+G+F	Starch+sucrose
Amount of pH drop/min	0.019 ± 0.001d	0.019 ± 0.001d	0.062 ± 0.006b	0.031 ± 0.004c	0.033 ± 0.004c	0.073 ± 0.002a
Hydrogenionic concentration (µmol/L)	0.614 ± 0.026C	0.633 ± 0.014C	6.707 ± 2.434B	1.190 ± 0.164BC	1.316 ± 0.274BC	12.883 ± 2.336A

Means followed by different lower case superscript letters differ statistically by ANOVA followed by Tukey test (p<0.05). Means followed by different upper case superscript letters differ statistically by Kruskal-Wallis ANOVA on Ranks followed by Student-Newman-Keuls test (p<0.05). Salt solution: 0.016 ± 0.002 (pH drop/min) and 0.52 ± 0.08 (H⁺ concentration; µmol/L) G+F: glucose+fructose.