mulations investigated was not observed (P > 0.05,
ANOVA). An increase in the number of the study may
lead to a better comparison of pro¢le. In the blended
chitosan^tapioca starch patch, the di¡erent concen-
tration ratios of the polymers did not a¡ect the cumu-
lative tartaric acid permeated. Again, these obtained
results were corresponding to the low porosity of the
blended chitosan^tapioca starch patches