The varying DD of chitosan affected the weight loss profiles (Fig. 1 vs. Fig. 2). The weight loss of banana coated
with chitosan of 70% DD was higher compared to that of banana coated with 80% DD chitosan. The higher the DD
value of chitosan, the higher the purity the chitosan. This helped improve the homogeneity of chitosan solution, thus
improving the quality of the resulting edible coating. Within the same specified DD of chitosan, the increase of
chitosan concentration in the solution caused the decrease in weight loss (Fig. 1 and Fig. 2). The increased of
chitosan concentration in the edible coating could increase the barrier to the moisture loss. This seemed plausible
since the increase in chitosan concentration would increase the firmness12. The addition of TEA emulsifier TEA to
the chitosan coating solution did not significantly affect the weight loss reduction. TEA was expected to improve the
wettability of chitosan and increase the chitosan emulsion stability. This might be due to the incompatibility of TEA
emulsifier with chitosan. Other additives were probably needed when combined with TEA emulsifier to improve the
quality of chitosan coating