Similarly, 3.0 g/L NaCl was added to all the CNF30, CNF45, and CNF60 solutions with 0.075, 0.15, and 0.30 g/L concentrations to form CNF/NaCl solutions for hedonic tasting. The every panelist was asked to drink 5 mL of 3.0 g/L NaCl as well as the CNF and CNF/NaCl solutions of varying concentrations before assessing the saltiness and astringency of the solutions, which were evaluated using a 7-point scale (1 ¼ very weak, 4 ¼ moderate, 7 ¼ very strong). The stimulus was separated into 3 groups by concentration of CNFs. Each group had 7 samples including 3.0 g/L NaCl, 3 types of CNF
solutions and CNF/NaCl solutions. Each panelist was requested to evaluated the 21 stimulus one replication in concentration order,i.e. the first was 0.075 g/L CNF group, and next was 0.15 g/L CNF group, and final was 0.30 g/L CNF group. Before moving on to the next solution, the panelists were asked to rinse their mouth sufficiently to neutralize their taste.