Figure 6. Effect of saliva and of dialyzed saliva on the OSA of coffee extract.

Saliva was dialyzed for 15 hours against saline and then tested for its capacity to modify LDCL. Note that while neither saliva, dialyzed saliva (D) nor a coffee extract at 5 µM GAE had any LDCL-quenching abilities, combinations either of saliva and coffee and dialyzed saliva and coffee very markedly quenched luminescence. Data were analyzed by one–way ANOVA and differences were considered significant when P* <0.05, (n = 3).