Tannic acid (ppm ) WVP × 1011 [g m-1 s-1 Pa-1] O. P [cm3m/ (m-2day) ]
0 8.9±0.31a 226.18±7.92a
250 7.10±0.33b 200.11±874b
500 3.98±0.450c 143.57±2.25c
1000 161±0.13d 97.23±4.40d
Letters in table (a,b,c,d) presenting the tolerances of 0.05%.
Table 3: Effect of tannic acid to permeability oxygen and water vapor on gelatin films.