Study on the effect of chitosan concentration on quality and self-life of tofu

The purpose of this study was to evaluate the effect of chitosan concentration on the quality and shelf life of tofu. Tofu is treated by soaking in a chitosan solution with a concentration of 0.75 - 1.5%. The results showed that chitosan concentration 1% give the most stable pH value during storage, pH value ranged from 5.9 to 6.28, chitosan concentration of 0.75%, 1% and 1.25 % for the least reduced protein value.