Figure 6. Effects of various levels of salivary supernatant on the pH of salivary sediment incubation mixtures incubated with (a) 2.8, (b) 5.6, and (c) 28.0 mM glucose (0.05, 0.1, and 0.5% w/v, respectively). Shown in (d) are the effects in salivary sediment incubation mixtures of 33.3% (v/v) salivary supernatant from centrifuged whole saliva on the utilization of glucose at 2.8 and 28.0 mM glucose (adapted from Kleinberg et al., 1973).