However,
there was no significant difference (p > 0.05) between 0.05% and 0.2% addition of shell powder. When 0.05% of shell powder was added,
overall acceptability showed a high score because tofu had a good mouthfeel, moderate firmness and lower beany-flavour. However,
there was not a significant difference (p > 0.05) between no addition and 0.05% and 0.1% addition of shell powder. Tofu prepared with
shell powder (0.05% and 0.1% addition) had a shelf life of above 2 days longer than that prepared with a single use of MgCl2. The addition
of shell powder (0.05% and 0.1%) for tofu manufacturing resulted in a good sensory evaluation and the extension of shelf life.