as shown in Table
III. This may be due to the viscosity of o/w emulsion systems depends on the viscosity
of continuous phaset hat in turn depends on the concentration and/or molecular weight
of the polymer used in the continuous phase. Muzzarelli (8) reported that Ncarboxymethycl
hitosanc an increase the viscosity of a solution.The viscosity-increasing
capacity is related to the molecula weight of the chitosanL. i (24) reportedt hat watersolublec
hitosano btainedb y ultrasonict reatmenta ffectedt he flow consistenciyn dex,
which increasedw ith increasingm olecularw eight and concentrationo f water-soluble
chitosansu sedi n the system.B oth reportsc onfirm the abover esults.M oisturem asks
containing 2% methyl cellulose had a lower viscosity than that containing 0.5% U3
chitosanT. his may be becauseth e molecularw eight of methyl celluloseis smallert han
that of U3 chitosanT. he effecto f solutionp Hs between6 .3 and 6.7 on viscosityw asn ot
significant.