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